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105-484: The PE System serves the same function for an electric vehicle as an engine and a transmission for a vehicle powered by a conventional internal combustion engine . The first generation PE system used a discrete traction motor and power inverter electronic module, connected with an orange three-phase cable. In the second-generation PE system, the motor and inverter have been integrated, and cables and connectors have disappeared. In 2017, Hyundai confirmed reports that it

210-546: A compact car ( C-segment ). The segment may be called differently depending on the market. In several regions, the category may be known as "compact crossover" or "compact SUV" instead. This category is particularly popular in Europe, India, and Brazil, where it accounted for 37, 75, and 69% respectively of total SUV sales in 2018. In the United States, it accounted for 7% of total SUV sales in 2018. The best-selling vehicle in

315-447: A fuel cell without side production of NO x , but this is an electrochemical engine not a heat engine. The word engine derives from Old French engin , from the Latin ingenium –the root of the word ingenious . Pre-industrial weapons of war, such as catapults , trebuchets and battering rams , were called siege engines , and knowledge of how to construct them

420-439: A "coupe crossover SUV" or "coupe SUV". Although the term " coupe " itself is supposed to refer to a passenger car with a sloping or truncated rear roofline, most coupé crossover SUVs are equipped with five doors. The sloping roofline is designed to offer a styling advantage over its standard crossover counterpart. The body style has attracted criticism as being less attractive and less practical than normal crossovers. The BMW X6

525-523: A capable and more efficient alternative to larger truck-based SUVs. Another example is the Volvo V70 XC (also called V70 Cross Country), first introduced in 1999. In 2002, the model was renamed the XC70. Audi has been making Allroad versions of their station wagons since 1999. The Volkswagen Alltrack and Škoda Scout are equivalent variants. The crossover-styled variant of hatchbacks or city cars with

630-482: A chemical reaction, but are not heat engines. Examples include: An electric motor uses electrical energy to produce mechanical energy , usually through the interaction of magnetic fields and current-carrying conductors . The reverse process, producing electrical energy from mechanical energy, is accomplished by a generator or dynamo . Traction motors used on vehicles often perform both tasks. Electric motors can be run as generators and vice versa, although this

735-454: A cold cylinder, which are attached to reciprocating pistons 90° out of phase. The gas receives heat at the hot cylinder and expands, driving the piston that turns the crankshaft . After expanding and flowing through the recuperator, the gas rejects heat at the cold cylinder and the ensuing pressure drop leads to its compression by the other (displacement) piston, which forces it back to the hot cylinder. Non-thermal motors usually are powered by

840-474: A crossover SUV segment. These vehicles have been described as pseudo-crossovers. Many manufacturers have released "off-road" versions of station wagons, with larger cargo space and greater practicality, that are marketed as more capable in soft off-road or all-weather situations due to their raised ground clearance, making them a "crossover" between a station wagon and an SUV. In North America, some manufacturers sell station wagons with crossover styling due to

945-605: A distinction between a crossover SUV and body-on-frame SUV, calling both of them SUVs. Several government bodies in the United States also did not acknowledge the crossover distinction, including the United States Environmental Protection Agency (EPA) . In some jurisdictions, crossovers are classified as light trucks as are traditional SUVs and pickup trucks. Outside the United States, the term "crossover" tends to be used for C-segment ( compact ) or smaller vehicles, with large unibody vehicles—such as

1050-544: A few limited-production battery-powered electric vehicles have appeared, they have not proved competitive owing to costs and operating characteristics. In the 21st century the diesel engine has been increasing in popularity with automobile owners. However, the gasoline engine and the Diesel engine, with their new emission-control devices to improve emission performance, have not yet been significantly challenged. A number of manufacturers have introduced hybrid engines, mainly involving

1155-412: A gas as in a Stirling engine , or steam as in a steam engine or an organic liquid such as n-pentane in an Organic Rankine cycle . The fluid can be of any composition; gas is by far the most common, although even single-phase liquid is sometimes used. In the case of the steam engine, the fluid changes phases between liquid and gas. Air-breathing combustion engines are combustion engines that use

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1260-459: A heat difference to induce high-amplitude sound waves. In general, thermoacoustic engines can be divided into standing wave and travelling wave devices. Stirling engines can be another form of non-combustive heat engine. They use the Stirling thermodynamic cycle to convert heat into work. An example is the alpha type Stirling engine, whereby gas flows, via a recuperator , between a hot cylinder and

1365-425: A heat engine). Chemical heat engines which employ air (ambient atmospheric gas) as a part of the fuel reaction are regarded as airbreathing engines. Chemical heat engines designed to operate outside of Earth's atmosphere (e.g. rockets , deeply submerged submarines ) need to carry an additional fuel component called the oxidizer (although there exist super-oxidizers suitable for use in rockets, such as fluorine ,

1470-460: A large scale required efficient electrical generators and electrical distribution networks. To reduce the electric energy consumption from motors and their associated carbon footprints , various regulatory authorities in many countries have introduced and implemented legislation to encourage the manufacture and use of higher efficiency electric motors. A well-designed motor can convert over 90% of its input energy into useful power for decades. When

1575-489: A majority of the models. Several three-cylinder, two-stroke-cycle models were built while most engines had straight or in-line cylinders. There were several V-type models and horizontally opposed two- and four-cylinder makes too. Overhead camshafts were frequently employed. The smaller engines were commonly air-cooled and located at the rear of the vehicle; compression ratios were relatively low. The 1970s and 1980s saw an increased interest in improved fuel economy , which caused

1680-446: A more comfortable ride, better fuel economy, and lower manufacturing costs, but inferior off-road and towing capabilities. Many crossovers lack an all-wheel drive or four-wheel-drive train, which, in combination with their inferior off-road capability, causes many journalists and consumers to question their definition as "sports utility vehicles". This has led some to describe crossovers as pseudo-SUVs. Introduced in 1979, prior to

1785-438: A more powerful oxidant than oxygen itself); or the application needs to obtain heat by non-chemical means, such as by means of nuclear reactions . All chemically fueled heat engines emit exhaust gases. The cleanest engines emit water only. Strict zero-emissions generally means zero emissions other than water and water vapour. Only heat engines which combust pure hydrogen (fuel) and pure oxygen (oxidizer) achieve zero-emission by

1890-560: A nuclear power plant uses the heat from the nuclear reaction to produce steam and drive a steam engine, or a gas turbine in a rocket engine may be driven by decomposing hydrogen peroxide . Apart from the different energy source, the engine is often engineered much the same as an internal or external combustion engine. Another group of noncombustive engines includes thermoacoustic heat engines (sometimes called "TA engines") which are thermoacoustic devices that use high-amplitude sound waves to pump heat from one place to another, or conversely use

1995-559: A pressure just above atmospheric to drive the piston helped by a partial vacuum. Improving on the design of the 1712 Newcomen steam engine , the Watt steam engine, developed sporadically from 1763 to 1775, was a great step in the development of the steam engine. Offering a dramatic increase in fuel efficiency , James Watt 's design became synonymous with steam engines, due in no small part to his business partner, Matthew Boulton . It enabled rapid development of efficient semi-automated factories on

2100-556: A previously unimaginable scale in places where waterpower was not available. Later development led to steam locomotives and great expansion of railway transportation . As for internal combustion piston engines , these were tested in France in 1807 by de Rivaz and independently, by the Niépce brothers . They were theoretically advanced by Carnot in 1824. In 1853–57 Eugenio Barsanti and Felice Matteucci invented and patented an engine using

2205-608: A railroad electric locomotive , rather than an electric motor. Some motors are powered by potential or kinetic energy, for example some funiculars , gravity plane and ropeway conveyors have used the energy from moving water or rocks, and some clocks have a weight that falls under gravity. Other forms of potential energy include compressed gases (such as pneumatic motors ), springs ( clockwork motors ) and elastic bands . Historic military siege engines included large catapults , trebuchets , and (to some extent) battering rams were powered by potential energy. A pneumatic motor

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2310-514: A range of at least 500 km (310 mi) under the WLTP test cycle. Vehicles will support 200 kW fast charging; Hyundai claim an 18-minute charge will restore 80% of capacity (80% SOC of 77.4 kWh in 18 minutes) and a 5-minute charge will add 100 km (62 mi) of range when using a high-power (800 V/350 kW) DC fast charging supply. By standardizing the battery type and size, repairs can be carried out more economically by replacing

2415-555: A return to smaller V-6 and four-cylinder layouts, with as many as five valves per cylinder to improve efficiency. The Bugatti Veyron 16.4 operates with a W16 engine , meaning that two V8 cylinder layouts are positioned next to each other to create the W ;shape sharing the same crankshaft. The largest internal combustion engine ever built is the Wärtsilä-Sulzer RTA96-C , a 14-cylinder, 2-stroke turbocharged diesel engine that

2520-494: A single module, rather than the entire battery pack. Hyundai claim that power density has increased by 10% with the E-GMP. Current (as of 2022) DC fast charging infrastructure has a power and voltage of 50–350 kW and 400-920 V. The E-GMP electronics support voltages of both 400 V and 800 V charging systems and offers bi-directional charging (V2L (110/230 V and up to 3.7 kW), V2V and V2G ). The platform uses

2625-420: A single powertrain unit. Both single motor 2WD (rear axle) and dual motor AWD are supported. Hyundai claim the motor is approximately 10% more efficient than a conventional motor due to "hairpin winding technology", allowing the coils to be wound more densely, and more effective cooling. The transmission reduces the traction motor speed and applies torque to the driven axle. This effectively multiplies torque at

2730-724: A small gasoline engine coupled with an electric motor and with a large battery bank, these are starting to become a popular option because of their environment awareness. Exhaust gas from a spark ignition engine consists of the following: nitrogen 70 to 75% (by volume), water vapor 10 to 12%, carbon dioxide 10 to 13.5%, hydrogen 0.5 to 2%, oxygen 0.2 to 2%, carbon monoxide : 0.1 to 6%, unburnt hydrocarbons and partial oxidation products (e.g. aldehydes ) 0.5 to 1%, nitrogen monoxide 0.01 to 0.4%, nitrous oxide <100 ppm, sulfur dioxide 15 to 60 ppm, traces of other compounds such as fuel additives and lubricants, also halogen and metallic compounds, and other particles. Carbon monoxide

2835-453: A source of water power to provide additional power to watermills and water-raising machines. In the medieval Islamic world , such advances made it possible to mechanize many industrial tasks previously carried out by manual labour . In 1206, al-Jazari employed a crank - conrod system for two of his water-raising machines. A rudimentary steam turbine device was described by Taqi al-Din in 1551 and by Giovanni Branca in 1629. In

2940-429: A strict definition (in practice, one type of rocket engine). If hydrogen is burnt in combination with air (all airbreathing engines), a side reaction occurs between atmospheric oxygen and atmospheric nitrogen resulting in small emissions of NO x . If a hydrocarbon (such as alcohol or gasoline) is burnt as fuel, CO 2 , a greenhouse gas , is emitted. Hydrogen and oxygen from air can be reacted into water by

3045-431: A torque include the familiar automobile gasoline and diesel engines, as well as turboshafts . Examples of engines which produce thrust include turbofans and rockets . When the internal combustion engine was invented, the term motor was initially used to distinguish it from the steam engine—which was in wide use at the time, powering locomotives and other vehicles such as steam rollers . The term motor derives from

3150-550: A water-powered mill was built in Kaberia of the kingdom of Mithridates during the 1st century BC. Use of water wheels in mills spread throughout the Roman Empire over the next few centuries. Some were quite complex, with aqueducts , dams , and sluices to maintain and channel the water, along with systems of gears , or toothed-wheels made of wood and metal to regulate the speed of rotation. More sophisticated small devices, such as

3255-639: Is a class of crossover SUVs that is larger than compact crossover SUVs , but smaller than full-size crossover SUVs . Mid-size crossover SUVs are usually based on the platform of a mid-size (also known as a large family car or a D-segment ) passenger car, while some models are based on a full-size car ( F-segment ) or a compact ( C-segment ) platform. Some mid-size crossovers have three rows of seats, while others have two rows, which led to several brands offering multiple models to cater to both sub-segments. In Australia, American mid-sized crossovers are classified as large SUVs. The first mid-size crossovers included

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3360-416: Is a machine that converts potential energy in the form of compressed air into mechanical work . Pneumatic motors generally convert the compressed air to mechanical work through either linear or rotary motion. Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor or piston air motor. Pneumatic motors have found widespread success in

3465-598: Is a type of automobile with an increased ride height that is built on unibody chassis construction shared with passenger cars , as opposed to traditional sport utility vehicles ( SUVs ), which are built on a body-on-frame chassis construction similar to pickup trucks . A term that originated from North America, the term crossover was initially used for any vehicle that blends characteristics between two different kinds of vehicles while, over time, crossover mostly refers to unibody-based SUVs. Crossovers are also described as "car-like SUVs" or "car-based SUVs". The term SUV

3570-627: Is credited to be the first coupe crossover. The first crossover convertible was the AMC Eagle marketed by AMC dealers during the 1981 and 1982 model years as the Sundancer, a factory-authorized conversion of the all-wheel-drive two-door sedans. Several convertible crossover SUVs have entered mass production, including the Toyota RAV4 convertible. Released in North America in the 1998 model year, it

3675-534: Is highly toxic, and can cause carbon monoxide poisoning , so it is important to avoid any build-up of the gas in a confined space. Catalytic converters can reduce toxic emissions, but not eliminate them. Also, resulting greenhouse gas emissions, chiefly carbon dioxide , from the widespread use of engines in the modern industrialized world is contributing to the global greenhouse effect – a primary concern regarding global warming . Some engines convert heat from noncombustive processes into mechanical work, for example

3780-710: Is not always practical. Electric motors are ubiquitous, being found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools , and disk drives . They may be powered by direct current (for example a battery powered portable device or motor vehicle), or by alternating current from a central electrical distribution grid. The smallest motors may be found in electric wristwatches. Medium-size motors of highly standardized dimensions and characteristics provide convenient mechanical power for industrial uses. The very largest electric motors are used for propulsion of large ships, and for such purposes as pipeline compressors, with ratings in

3885-524: Is often used as an umbrella term for both crossovers and traditional SUVs due to the similarities between them. Compared to traditional SUVs, crossovers are known to be less capable of use in off-road conditions or hauling heavy loads, while instead offering other advantages such as superior fuel economy and handling . Compared to traditional cars with lower ride height and a lower roof such as sedans and hatchbacks , crossovers offer larger cabin space and enhanced driving position. The 1977 Lada Niva

3990-533: Is often used as an umbrella term for both crossovers and traditional SUVs. U.S. magazine MotorTrend in 2005 mentioned that the term "crossover" has become "blurred as manufacturers apply it to everything from the Chrysler Pacifica to the Ford Five Hundred sedan". At that time, the publication proposes that the term "soft-roader" is more appropriate. Some regions outside North America do not have

4095-428: Is reached with a coolant temperature of around 110 °C (230 °F). Earlier automobile engine development produced a much larger range of engines than is in common use today. Engines have ranged from 1- to 16-cylinder designs with corresponding differences in overall size, weight, engine displacement , and cylinder bores . Four cylinders and power ratings from 19 to 120 hp (14 to 90 kW) were followed in

4200-483: Is said to maximize driving range or meet the needs of a customer. Kia markets EV3 and EV5 as based on the E-GMP 400 V architecture. Their chassis are derived from the front-wheel-drive Hyundai-Kia K3 and N3 platforms, with body structures redesigned for the battery electric vehicles. The E-GMP platform is an 800 V architecture with scalable wheelbase length, and supports batteries from multiple manufacturers. The motor, inverter, and transmission are integrated into

4305-485: Is sometimes considered to include the three-row mid-size crossover class, as in the case of the Jeep Grand Cherokee L . While three-door body-on-frame SUVs are not uncommon, crossover SUVs with three doors (including the tailgate door) are less prevalent. The decline of two or three-door vehicles, in general, has led to the decline of this category. Crossover SUVs with a sloping rear roofline may be marketed as

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4410-405: Is that a crossover is built using a unibody platform, while an SUV is built using a body-on-frame platform. However, these definitions are often blurred in practice, since unibody vehicles are also often referred to as SUVs. "Crossover" is a relatively recent term, and early unibody SUVs (such as the 1984 Jeep Cherokee ) are rarely called crossovers. Due to these inconsistencies, the term "SUV"

4515-541: Is the world's first mass-produced unibody off-road vehicle and has been credited as a forerunner of crossovers before that term was used, with the '79 AMC Eagle , being the first US example. The Toyota RAV4 , first introduced in 1994, pioneered the modern concept of a crossover. In the US, the market share of crossovers has grown from under 4% in 2000 to nearly 40% in 2018. The difference between crossover SUVs and other SUVs as generally defined by journalists and manufacturers

4620-534: Is then cooled, compressed and reused (closed cycle), or (less commonly) dumped, and cool fluid pulled in (open cycle air engine). " Combustion " refers to burning fuel with an oxidizer , to supply the heat. Engines of similar (or even identical) configuration and operation may use a supply of heat from other sources such as nuclear, solar, geothermal or exothermic reactions not involving combustion; but are not then strictly classed as external combustion engines, but as external thermal engines. The working fluid can be

4725-693: The Antikythera Mechanism used complex trains of gears and dials to act as calendars or predict astronomical events. In a poem by Ausonius in the 4th century AD, he mentions a stone-cutting saw powered by water. Hero of Alexandria is credited with many such wind and steam powered machines in the 1st century AD, including the Aeolipile and the vending machine , often these machines were associated with worship, such as animated altars and automated temple doors. Medieval Muslim engineers employed gears in mills and water-raising machines, and used dams as

4830-696: The Audi Q7 , Range Rover , Porsche Cayenne and Volkswagen Touareg —usually referred to as SUVs rather than crossovers. In the United Kingdom, a crossover is sometimes defined as a hatchback with raised ride height and SUV-like styling features. The Sunday Times noted the number of "soft-roader" cars on sale in 2019. Crossovers' driving characteristics and performance are similar to those of traditional passenger cars while providing more passenger and cargo space with relatively minor trade-offs in fuel economy and running costs. According to Consumer Reports ,

4935-561: The Subaru Legacy SUS (short for "Sport Utility Sedan"), Volvo S60 Cross Country , Polestar 2 , Toyota Crown Crossover , Citroën C4 X and C3L in China, Renault/Dacia Logan Stepway and the Qoros 3 GT . Since the early 2010s, sales of crossover-type vehicles have been increasing in Europe. By 2017, European sales of compact and mid-sized crossover models continued to surge. Analysis of

5040-548: The Toyota Aygo X , Hyundai Casper , Suzuki Ignis , Renault Kwid , VinFast VF 5 , Suzuki Xbee , and the Fiat Panda Cross/City Cross . Subcompact crossover SUVs (also called B-segment crossover SUV, B-SUV, small SUV ) are crossovers that are usually based on the platform of a subcompact (also known as supermini or B-segment ) passenger car, although some high-end subcompact crossover models are based on

5145-654: The Toyota Corolla and Toyota Carina . At its release, Toyota in Japan used the term "4x4 vehicle" to describe the model, while Toyota in the US called the vehicle a "new concept SUV". By the early 2000s, Toyota was leading the market in its development of car-based trucks in North America with the release of other crossover models such as the Highlander and the Lexus RX . In North America, crossovers increased in popularity during

5250-459: The Toyota Highlander and Pontiac Aztek , both introduced in 2000 for the 2001 model year. The segment is most popular in North America and China, where larger vehicles are preferred. It makes up 15.8% of the total United States car market. In Europe, the segment covers 2.1% of the total market in 2019 with luxury crossover SUVs dominating most of the share. The Toyota Highlander/Kluger

5355-649: The Volkswagen Beetle , the Citroën 2CV , some Porsche and Subaru cars, many BMW and Honda motorcycles . Opposed four- and six-cylinder engines continue to be used as a power source in small, propeller-driven aircraft . The continued use of internal combustion engines in automobiles is partly due to the improvement of engine control systems, such as on-board computers providing engine management processes, and electronically controlled fuel injection. Forced air induction by turbocharging and supercharging have increased

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5460-407: The club and oar (examples of the lever ), are prehistoric . More complex engines using human power , animal power , water power , wind power and even steam power date back to antiquity. Human power was focused by the use of simple engines, such as the capstan , windlass or treadmill , and with ropes , pulleys , and block and tackle arrangements; this power was transmitted usually with

5565-733: The combustion of a fuel causes rapid pressurisation of the gaseous combustion products in the combustion chamber, causing them to expand and drive a piston , which turns a crankshaft . Unlike internal combustion engines, a reaction engine (such as a jet engine ) produces thrust by expelling reaction mass , in accordance with Newton's third law of motion . Apart from heat engines, electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air , and clockwork motors in wind-up toys use elastic energy . In biological systems, molecular motors , like myosins in muscles , use chemical energy to create forces and ultimately motion (a chemical engine, but not

5670-399: The oxygen in atmospheric air to oxidise ('burn') the fuel, rather than carrying an oxidiser , as in a rocket . Theoretically, this should result in a better specific impulse than for rocket engines. A continuous stream of air flows through the air-breathing engine. This air is compressed, mixed with fuel, ignited and expelled as the exhaust gas . In reaction engines , the majority of

5775-429: The pistons or turbine blades or a nozzle , and by moving it over a distance, generates mechanical work . An external combustion engine (EC engine) is a heat engine where an internal working fluid is heated by combustion of an external source, through the engine wall or a heat exchanger . The fluid then, by expanding and acting on the mechanism of the engine produces motion and usable work . The fluid

5880-419: The 13th century, the solid rocket motor was invented in China. Driven by gunpowder, this simplest form of internal combustion engine was unable to deliver sustained power, but was useful for propelling weaponry at high speeds towards enemies in battle and for fireworks . After invention, this innovation spread throughout Europe. The Watt steam engine was the first type of steam engine to make use of steam at

5985-444: The 2000s, when fuel efficiency standards for light trucks, which had been stuck at 20.7 miles per US gallon (11.4 L/100 km; 8.8 km/L) since 1996, moved upwards by 2005. With increasing fuel prices, traditional SUVs began to lose market share to crossovers. In the United States as of 2006 , crossover models comprised more than 50% of the overall SUV market. Crossovers have become increasingly popular in Europe also since

6090-496: The Earth's gravitational field as exploited in hydroelectric power generation ), heat energy (e.g. geothermal ), chemical energy , electric potential and nuclear energy (from nuclear fission or nuclear fusion ). Many of these processes generate heat as an intermediate energy form; thus heat engines have special importance. Some natural processes, such as atmospheric convection cells convert environmental heat into motion (e.g. in

6195-452: The European new car market by data firm JATO Dynamics reveals that SUVs which mostly consisted of crossovers took almost 40% of the market in 2019, with the crossover segment being a key driver of growth for volume and profits. Sales of crossovers increased by 30% between 2003 and 2005. By 2006, the segment came into strong visibility in the U.S., when crossover sales "made up more than 50% of

6300-517: The Latin verb moto which means 'to set in motion', or 'maintain motion'. Thus a motor is a device that imparts motion. Motor and engine are interchangeable in standard English. In some engineering jargons, the two words have different meanings, in which engine is a device that burns or otherwise consumes fuel, changing its chemical composition, and a motor is a device driven by electricity , air , or hydraulic pressure, which does not change

6405-436: The chemical composition of its energy source. However, rocketry uses the term rocket motor , even though they consume fuel. A heat engine may also serve as a prime mover —a component that transforms the flow or changes in pressure of a fluid into mechanical energy . An automobile powered by an internal combustion engine may make use of various motors and pumps, but ultimately all such devices derive their power from

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6510-447: The combustion energy (heat) exits the engine as exhaust gas, which provides thrust directly. Typical air-breathing engines include: The operation of engines typically has a negative impact upon air quality and ambient sound levels . There has been a growing emphasis on the pollution producing features of automotive power systems. This has created new interest in alternate power sources and internal-combustion engine refinements. Though

6615-678: The convertible version, since it could only have two doors and little luggage space. Many manufacturers have capitalized on the SUV trend by offering a version of station wagons, hatchbacks, or MPVs with a raised ride height and the addition of rugged-looking accessories such as a black plastic wheel arch extension kit, body cladding, skid plates , and roof rails. Due to their raised ground clearance, these vehicles may then be marketed as more capable off-road. Some of them may also be equipped with an all-wheel-drive. This strategy has been used by manufacturers to move models upmarket or to help fill an absence in

6720-681: The early 2010s. In the first quarter of 2023 the Tesla Model Y crossover became the best-selling vehicle in the world. Depending on the market, crossovers are divided into several size categories. Since there is an absence of any official distinction, often the size category is ambiguous for some crossover models. Several aspects needed to determine the size category of a vehicle may include length and width, positioning in its respective brand line-up, platform , and interior space. Crossover city cars (also called A-SUVs, city SUVs, city crossovers, or A-segment SUVs) are crossovers that generally ride on

6825-489: The efficiency of a motor is raised by even a few percentage points, the savings, in kilowatt hours (and therefore in cost), are enormous. The electrical energy efficiency of a typical industrial induction motor can be improved by: 1) reducing the electrical losses in the stator windings (e.g., by increasing the cross-sectional area of the conductor , improving the winding technique, and using materials with higher electrical conductivities , such as copper ), 2) reducing

6930-496: The electrical losses in the rotor coil or casting (e.g., by using materials with higher electrical conductivities, such as copper), 3) reducing magnetic losses by using better quality magnetic steel , 4) improving the aerodynamics of motors to reduce mechanical windage losses, 5) improving bearings to reduce friction losses , and 6) minimizing manufacturing tolerances . For further discussion on this subject, see Premium efficiency ). By convention, electric engine refers to

7035-446: The energy of a potential impact, and high strength steel is used to protect the battery and passenger compartment. Hyundai plan to release 23 battery electric vehicles, including 11 exclusively electric vehicles, using the E-GMP platform. Engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy . Available energy sources include potential energy (e.g. energy of

7140-404: The engine. Another way of looking at it is that a motor receives power from an external source, and then converts it into mechanical energy, while an engine creates power from pressure (derived directly from the explosive force of combustion or other chemical reaction, or secondarily from the action of some such force on other substances such as air, water, or steam). Simple machines , such as

7245-615: The first MPVs with a crossover-style variant was the Renault Scénic RX4 , introduced in 2000. It featured a lifted ride height, rugged body cladding, tailgate-mounted spare wheel, and optional part-time four-wheel-drive. Another example is the Volkswagen CrossTouran , launched in 2006 as a lifted version of the Touran and marketed as a "lifestyle" vehicle. Apart from crossover-style variants equipped with exterior accessories, due to

7350-636: The first half of the 20th century, a trend of increasing engine power occurred, particularly in the U.S. models. Design changes incorporated all known methods of increasing engine capacity, including increasing the pressure in the cylinders to improve efficiency, increasing the size of the engine, and increasing the rate at which the engine produces work. The higher forces and pressures created by these changes created engine vibration and size problems that led to stiffer, more compact engines with V and opposed cylinder layouts replacing longer straight-line arrangements. Optimal combustion efficiency in passenger vehicles

7455-674: The forces multiplied and the speed reduced . These were used in cranes and aboard ships in Ancient Greece , as well as in mines , water pumps and siege engines in Ancient Rome . The writers of those times, including Vitruvius , Frontinus and Pliny the Elder , treat these engines as commonplace, so their invention may be more ancient. By the 1st century AD, cattle and horses were used in mills , driving machines similar to those powered by humans in earlier times. According to Strabo ,

7560-403: The form of rising air currents). Mechanical energy is of particular importance in transportation , but also plays a role in many industrial processes such as cutting, grinding, crushing, and mixing. Mechanical heat engines convert heat into work via various thermodynamic processes. The internal combustion engine is perhaps the most common example of a mechanical heat engine in which heat from

7665-578: The former's unpopularity, the Subaru Outback being the most popular model. An early model of off-road-styled station wagons was the Subaru Legacy Outback (later Outback) in 1994. At the time, Subaru was absent in the growing SUV segment. Lacking the finances to design a ground-up SUV, Subaru added a two-tone paint scheme, body cladding, and a suspension lift to the Legacy wagon. It was marketed as

7770-524: The free-piston principle that was possibly the first 4-cycle engine. The invention of an internal combustion engine which was later commercially successful was made during 1860 by Etienne Lenoir . In 1877, the Otto cycle was capable of giving a far higher power-to-weight ratio than steam engines and worked much better for many transportation applications such as cars and aircraft. The first commercially successful automobile, created by Karl Benz , added to

7875-456: The front motor inverter also, improving efficiency and range by approximately 5%. The platform supports a wheelbase exceeding 3,000 mm (118.1 in). E-GMP supports various sizes and configurations of vehicles, including C-segment , E-segment , CUV , sedan , and SUV , including three-row SUVs with seven seats. Albert Biermann stated that "existing [derivative] EVs on ICEV platforms will see some expansions into smaller segments", which

7980-503: The hand-held tool industry and continual attempts are being made to expand their use to the transportation industry. However, pneumatic motors must overcome efficiency deficiencies before being seen as a viable option in the transportation industry. A hydraulic motor derives its power from a pressurized liquid . This type of engine is used to move heavy loads and drive machinery. Crossover utility vehicle A crossover , crossover SUV , or crossover utility vehicle ( CUV )

8085-411: The heat of a combustion process. The internal combustion engine is an engine in which the combustion of a fuel (generally, fossil fuel ) occurs with an oxidizer (usually air) in a combustion chamber . In an internal combustion engine the expansion of the high temperature and high pressure gases, which are produced by the combustion, directly applies force to components of the engine, such as

8190-472: The increase of thermal management, where the thermal conductivity of silicon carbide is 1490W/m-K (Watts per meter-Kelvin), compared to the 150 W/m-K offered by Silicon. SiC is used for the rear (main) motor to minimize conversion losses and to facilitate its use in high-voltage and high-current circuits. The front motor, on vehicles so equipped, will use silicon-based power electronics to reduce costs. In 2022, Hyundai announced that it will switch to SiC for

8295-444: The increasing crossover market shares, many manufacturers began developing MPVs from the ground up with crossover characteristics – and often marketed them either purely as an MPV or as a "crossover MPV" – such as the 5th generation of Renault Espace . The innovative unibody all-wheel drive AMC Eagle was available in two- and four-door sedan versions when introduced in 1979. Some examples of sedans with crossover characteristics are

8400-443: The innovative station wagon with a sliding roof "mashed up various vehicle types." It was available only with a conventional rear-wheel drive . Others cite the front-wheel drive 1977 Matra Rancho as a slightly earlier forerunner to the modern crossover. Marketed as a "lifestyle" vehicle, it was not available with four-wheel drive. In 1981, American Motors Corporation (AMC) introduced four-wheel drive subcompact models built on

8505-462: The interest in light and powerful engines. The lightweight gasoline internal combustion engine, operating on a four-stroke Otto cycle, has been the most successful for light automobiles, while the thermally more-efficient Diesel engine is used for trucks and buses. However, in recent years, turbocharged Diesel engines have become increasingly popular in automobiles, especially outside of the United States, even for quite small cars. In 1896, Karl Benz

8610-554: The late 2010s, the segment had emerged as the most popular segment in several regions. For example, nearly 1 in every 4 cars (24.2%) sold in the United States in 2019 was a compact crossover. It also comprised 5.6% of the total European car market. The best-selling vehicle in the segment in 2019 was the Toyota RAV4, with 961,918 units sold globally. In late 2020 the Volkswagen ID.4 and Ford Mustang Mach-E debuted as battery electric compact crossover SUVs. A mid-size crossover SUV

8715-602: The market share of compact crossovers in the US increased from 6 to more than 11%. In 2014, for the first time ever, sales of compact crossovers outpaced mid-size sedans in the United States. In 2019, the American magazine Car and Driver stated that "so many of these vehicles are crowding the marketplace, simply sorting through them can be a daunting task". Due to its popularity and to cater to customers' needs, many manufacturers offer more than one compact crossover, usually in slightly different sizes at different price points. By

8820-543: The motor-inverter housing lowered the inverter height by about 30 mm (1.2 in). The PE System has also been installed into the Hyundai Vision FK concept, an eco-friendly hydrogen electric vehicle. In this vehicle, the PE System has been combined with a hydrogen fuel cell system. A standardized battery system can be tuned and implemented as part of the system appropriate for a specific vehicle segment. This system

8925-532: The platform of a city car ( A-segment ). Crossover city car is a newly introduced automotive vehicle segment , with the first vehicle in the segment being the Fiat Panda Cross , though the Suzuki Ignis helped bring the segment more attention. Cars in this segment are generally styled as hatchbacks . Since the late 2010s, the segment has received significantly more attention. As of 2023 , examples include

9030-596: The power output of smaller displacement engines that are lighter in weight and more fuel-efficient at normal cruise power.. Similar changes have been applied to smaller Diesel engines, giving them almost the same performance characteristics as gasoline engines. This is especially evident with the popularity of smaller diesel engine-propelled cars in Europe. Diesel engines produce lower hydrocarbon and CO 2 emissions, but greater particulate and NO x pollution, than gasoline engines. Diesel engines are also 40% more fuel efficient than comparable gasoline engines. In

9135-490: The same body was introduced either as a substitute for or a complement to the subcompact crossover SUV. Most crossover-styled hatchbacks do not have all-wheel-drive. Forerunners of the SUV-themed hatchback are the 1983 Fiat Panda 4x4 , the 1994 Outback Sport , the 1996 Toyota Starlet Remix , and the 2003 Rover Streetwise . The Volkswagen Golf Country, a conversion by Steyr-Daimler-Puch, was also sold between 1990 and 1991, and

9240-499: The segment in 2019 was the Honda HR-V, with 622,154 units being recorded as having been sold worldwide. A compact crossover SUV (also called C-segment SUV or C-SUV ) is a vehicle that is usually based on the platform of a compact car ( C-segment ), while some models are based on a mid-size car ( D-segment ) or a subcompact ( B-segment ) platform. Most compact crossovers have two-row seating, but some have three rows. The naming of

9345-477: The segment may differ depending on the market. In several regions outside North America, the category may be known as "mid-size crossover" or "mid-size SUV", not to be confused with the North American definition of a mid-size crossover SUV, which is a larger D-segment crossover SUV. The first compact crossover was the 1980 AMC Eagle that was based on the compact-sized Concord line. Its four-wheel drive system

9450-412: The terms "SUV" or "crossover" being coined, the AMC Eagle is retroactively considered to be the first dedicated crossover automobile. The mass-market Eagle model line was based on a unibody passenger car platform, with fully-automatic four-wheel drive and a raised ride height. Furthermore, a writer for Motor Trend characterized the 1963 Studebaker Wagonaire as the "first crossover" because

9555-442: The thousands of kilowatts . Electric motors may be classified by the source of electric power, by their internal construction, and by their application. The physical principle of production of mechanical force by the interactions of an electric current and a magnetic field was known as early as 1821. Electric motors of increasing efficiency were constructed throughout the 19th century, but commercial exploitation of electric motors on

9660-503: The three top-selling crossovers in the US in 2018 ( Toyota RAV4 , Honda CR-V , and Nissan Rogue ) return an average of 10% less fuel economy than the top three selling sedan equivalents in the mid-size segment ( Toyota Camry , Honda Accord , Nissan Altima ), but provide almost 1.5 times the cargo space. Furthermore, the average mid-size crossover in the US costs less than 5% more than the average mid-size car. Compared to truck-based SUVs, crossovers typically have greater interior comfort,

9765-419: The two-door AMC Spirit , the "Eagle SX/4" and "Eagle Kammback." These low-priced models joined the compact AMC Eagle line and they foreshadowed the market segment of comfortable cars with utility and foul-weather capabilities. The first-generation Toyota RAV4, released in 1994, has been credited as the model that expanded the concept of a modern crossover. The RAV4 was based on a modified platform used by

9870-441: The vehicle's motor/inverter to convert incoming DC current at 400 V to 800 V. The inverter converts direct current electrical energy stored in the battery to the alternating current power used in the traction motor. The inverter power module comes with silicon carbide ( SiC ) semiconductors . These are proven to be more efficient than existing semiconductors that are only made with Silicon, as one but not limited to

9975-440: The wheel for electric vehicles. In addition, an EV Transmission Disconnector is provided, which allows for the motor and drive axle to be disconnected, which enables free shifting between 2WD (two-wheel drive) and 4WD (four-wheel drive). This is only available for the all-wheel drive system. The Li-ion batteries are pouch-sized and the battery-pack is designed to be 13 cm (5.1 in) tall. E-GMP vehicles are expected to have

10080-428: Was an almost unheard-of feature on regular passenger cars at the time, and it came with full-time all-wheel drive, automatic transmission, power steering, power front disk brakes as standard, and numerous convenience and comfort options. Later models included the 1994 Toyota RAV4 , 1995 Honda CR-V , 1997 Subaru Forester , 2000 Nissan X-Trail , 2000 Mazda Tribute , and the 2001 Ford Escape . Between 2005 and 2010,

10185-489: Was clarified to mean that smaller EVs would continue to use a front-wheel-drive platform. The rear suspension uses a five-link arrangement. An integrated drive axle is used, in which the drive shaft and wheel bearings are a single unit; this reduces the number of parts and increases rigidity. The battery is attached to the full-perimeter frame using eight bolts running completely through the battery for strength. The front and rear crumple zones are designed to absorb and dissipate

10290-517: Was designed to power the Emma Mærsk , the largest container ship in the world when launched in 2006. This engine has a mass of 2,300 tonnes, and when running at 102 rpm (1.7 Hz) produces over 80 MW, and can use up to 250 tonnes of fuel per day. An engine can be put into a category according to two criteria: the form of energy it accepts in order to create motion, and the type of motion it outputs. Combustion engines are heat engines driven by

10395-428: Was developing a dedicated platform for electric vehicles; at the time, only a few manufacturers had done so. The third-generation PE System consists of a compact, integrated powertrain module, including traction motor, reduction gear transmission, and power inverter. The third-generation PE system is used in the E-GMP platform. Four-wheel drive is provided by placing motors on the front and rear wheels. The integration of

10500-436: Was granted a patent for his design of the first engine with horizontally opposed pistons. His design created an engine in which the corresponding pistons move in horizontal cylinders and reach top dead center simultaneously, thus automatically balancing each other with respect to their individual momentum. Engines of this design are often referred to as “flat” or “boxer” engines due to their shape and low profile. They were used in

10605-463: Was merely a water pump, with the engine being transported to the fire by horses. In modern usage, the term engine typically describes devices, like steam engines and internal combustion engines, that burn or otherwise consume fuel to perform mechanical work by exerting a torque or linear force (usually in the form of thrust ). Devices converting heat energy into motion are commonly referred to simply as engines . Examples of engines which exert

10710-488: Was offered through the 1999 model year. Other examples include the Nissan Murano CrossCabriolet , Range Rover Evoque Convertible , and Volkswagen T-Roc Cabriolet . This category was heavily criticized by journalists, enthusiasts, and analysts for numerous reasons, such as its design and high price tag. Some also questioned its purpose, as the practicality that crossovers usually have did not carryover to

10815-536: Was offered with part-time four-wheel drive and off-road exterior cladding. In the 2000s, the Volkswagen CrossPolo started the modern crossover-style hatchback trend and was marketed as an SUV-like "lifestyle" vehicle. The Dacia/Renault Sandero Stepway, the crossover-style version of the Sandero launched in 2009, is an example of a well-received crossover-style hatchback, making up 65% of Sandero sales. One of

10920-464: Was often treated as a military secret. The word gin , as in cotton gin , is short for engine . Most mechanical devices invented during the Industrial Revolution were described as engines—the steam engine being a notable example. However, the original steam engines, such as those by Thomas Savery , were not mechanical engines but pumps. In this manner, a fire engine in its original form

11025-562: Was the best-selling vehicle in the category in 2018, with 387,869 sold worldwide. Full-size crossover SUVs are usually based on full-size cars . They are the largest crossovers and offer exclusively three row seating. The first full-size crossovers included the Ford Freestyle , GMC Acadia , Saturn Outlook , and the Buick Enclave , with older full-size SUVs being built mostly above a body-on-frame chassis. The full-size crossover SUV class

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