Wilhelm Maybach ( German: [ˈvɪlhɛlm ˈmaɪbax] ; 9 February 1846 – 29 December 1929) was an early German engine designer and industrialist. During the 1890s he was hailed in France, then the world centre for car production, as the "King of Designers".
76-527: A four-stroke power valve is a device fitted to four-stroke engines that constantly adjusts the internal diameter of the exhaust system to better suit the speed of the engine. Yamaha was the first to develop such a system, called the Exhaust Ultimate Power Valve (EXUP). It first appeared on the Yamaha FZR EXUP and was later used on many other Yamahas. Later versions from Honda went by
152-447: A flathead engine a push rod is not necessary. The overhead cam design typically allows higher engine speeds because it provides the most direct path between cam and valve. Valve clearance refers to the small gap between a valve lifter and a valve stem that ensures that the valve completely closes. On engines with mechanical valve adjustment, excessive clearance causes noise from the valve train. A too-small valve clearance can result in
228-506: A pendulum clock . In November 1885, Daimler installed a smaller version of the engine onto a wooden bicycle, creating the first motorcycle (patent 36-423 – Vehicle with gas or petroleum engine), and Maybach drove it three kilometers from Cannstatt to Untertürkheim , reaching 12 km/h (7.5 mph). It became known as the Reitwagen . On 8 March 1886, the inventors bought an American model coach built by Wilhelm Wimpff & Sohn, telling
304-574: A schizophrenia attack and spent the rest of his life in various mental institutions. (In 1940, his son was murdered by the Nazis as part of the Euthanasia Program .) In 1900, Gottlieb Daimler died of heart disease. Between April and October 1900, Maybach designed a completely new kind of car inspired by racing which would be called the Mercedes 35 hp when released in 1902. It featured: Emil Jellinek ,
380-693: A cleaner and sold in pharmacies. The company's re-foundation took place on 28 November 1890. This has been regarded as a "pact with the devil" by some German historians, as the following decade was chaotic for Daimler and Maybach. DMG continued to expand, selling engines from Moscow to New York, and additional stationary engine-making capacity was added, but the belief continued that automobile production would not be profitable. The new chairmen planned to merge DMG and Deutz-AG , in spite of Daimler's disagreement with Nicolaus Otto. Gottlieb Daimler and Chief Engineer Maybach preferred to produce automobiles and reacted against Duttenhofer and Lorenz in particular. Maybach
456-402: A house with 75,000 goldmarks from his Deutz compensation. They added a brick extension to the glass-fronted summer house in the garden, which became their workshop. Their activities alarmed the neighbours, who suspected they were engaged in counterfeiting. The police raided the property in their absence using the gardener's key, but found only engines. In late 1883, Daimler and Maybach patented
532-520: A philanthropic institution at Reutlingen took in Maybach as a student. Its founder and director, Gustav Werner , discovered Maybach's technical inclination and helped to stimulate his career by sending him to the school's engineering workshop. At 15 years old (1861), Maybach was heading for a career in Industrial design and took extra classes in physics and mathematics at Reutlingen's public high school. By
608-489: A replica of the Lenoir engine in 1861, Otto became aware of the effects of compression on the fuel charge. In 1862, Otto attempted to produce an engine to improve on the poor efficiency and reliability of the Lenoir engine. He tried to create an engine that would compress the fuel mixture prior to ignition, but failed as that engine would run no more than a few minutes prior to its destruction. Many other engineers were trying to solve
684-612: A successful Austrian dealer and racing driver on the French Riviera who greatly admired Maybach's work, promised to buy a shipment of 36 automobiles for 550,000 goldmarks if Maybach could design a great race car for him following his specifications. The prototype was finished in December 1900 and, in 1901 went on to have a string of racing successes. Its engine was baptized Daimler-Mercedes (Spanish for mercy) after Mercedes Jellinek , Emil's 10-year–old daughter. European high society bought
760-579: A turbine system that converted waste heat into kinetic energy that it fed back into the engine's transmission. In 2005, BMW announced the development of the turbosteamer , a two-stage heat-recovery system similar to the Mack system that recovers 80% of the energy in the exhaust gas and raises the efficiency of an Otto engine by 15%. By contrast, a six-stroke engine may reduce fuel consumption by as much as 40%. Modern engines are often intentionally built to be slightly less efficient than they could otherwise be. This
836-413: Is a contact surface on which the cam slides to open the valve. Many engines use one or more camshafts "above" a row (or each row) of cylinders, as in the illustration, in which each cam directly actuates a valve through a flat tappet. In other engine designs the camshaft is in the crankcase , in which case each cam usually contacts a push rod , which contacts a rocker arm that opens a valve, or in case of
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#1733085741677912-580: Is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: Four-stroke engines are the most common internal combustion engine design for motorized land transport, being used in automobiles , trucks , diesel trains , light aircraft and motorcycles . They are also used in garden machinery such as lawn mowers , pressure washers , and cultivators . The major alternative design
988-403: Is closed, and to increase low-speed torque, large-amplitude exhaust pressure waves are artificially induced. This is done by partial closing of an internal butterfly valve within the exhaust where the primary pipes from the cylinders join. The alteration of the pressure at this point controls the behavior of reflected waves at this sudden increase in area discontinuity. Closing the valve increases
1064-463: Is closer to the top. Diesel engines by their nature do not have concerns with pre-ignition. They have a concern with whether or not combustion can be started. The description of how likely Diesel fuel is to ignite is called the Cetane rating. Because Diesel fuels are of low volatility, they can be very hard to start when cold. Various techniques are used to start a cold Diesel engine, the most common being
1140-424: Is designed to provide efficiency at the expense of power density , and is used in some modern hybrid electric applications. The original Atkinson-cycle piston engine allowed the intake, compression, power, and exhaust strokes of the four-stroke cycle to occur in a single turn of the crankshaft and was designed to avoid infringing certain patents covering Otto-cycle engines. Due to the unique crankshaft design of
1216-536: Is limited by the chemical composition of the fuel. There are several grades of fuel to accommodate differing performance levels of engines. The fuel is altered to change its self ignition temperature. There are several ways to do this. As engines are designed with higher compression ratios the result is that pre-ignition is much more likely to occur since the fuel mixture is compressed to a higher temperature prior to deliberate ignition. The higher temperature more effectively evaporates fuels such as gasoline, which increases
1292-590: Is necessary for emission controls such as exhaust gas recirculation and catalytic converters that reduce smog and other atmospheric pollutants. Reductions in efficiency may be counteracted with an engine control unit using lean burn techniques . In the United States, the Corporate Average Fuel Economy mandates that vehicles must achieve an average of 34.9 mpg ‑US (6.7 L/100 km; 41.9 mpg ‑imp ) compared to
1368-431: Is not immediately available due to the need to sharply increase engine RPM, to build up pressure and to spin up the turbo, before the turbo starts to do any useful air compression. The increased intake volume causes increased exhaust and spins the turbo faster, and so forth until steady high power operation is reached. Another difficulty is that the higher exhaust pressure causes the exhaust gas to transfer more of its heat to
1444-414: Is regarded as the first car. In 1884, Otto's company, then known as Gasmotorenfabrik Deutz (GFD), developed electric ignition and the carburetor. In 1890, Daimler and Maybach formed a company known as Daimler Motoren Gesellschaft . Today, that company is Daimler-Benz . The Atkinson-cycle engine is a type of single stroke internal combustion engine invented by James Atkinson in 1882. The Atkinson cycle
1520-400: Is that the temperature rise of the compressed charge can cause pre-ignition. If this occurs at the wrong time and is too energetic, it can damage the engine. Different fractions of petroleum have widely varying flash points (the temperatures at which the fuel may self-ignite). This must be taken into account in engine and fuel design. The tendency for the compressed fuel mixture to ignite early
1596-577: Is the two-stroke cycle . Nikolaus August Otto was a traveling salesman for a grocery concern. In his travels, he encountered the internal combustion engine built in Paris by Belgian expatriate Jean Joseph Etienne Lenoir . In 1860, Lenoir successfully created a double-acting engine that ran on illuminating gas at 4% efficiency. The 18 litre Lenoir Engine produced only 2 horsepower. The Lenoir engine ran on illuminating gas made from coal, which had been developed in Paris by Philip Lebon . In testing
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#17330857416771672-412: Is ultimately limited by material strength and lubrication . Valves, pistons and connecting rods suffer severe acceleration forces. At high engine speed, physical breakage and piston ring flutter can occur, resulting in power loss or even engine destruction. Piston ring flutter occurs when the rings oscillate vertically within the piston grooves they reside in. Ring flutter compromises the seal between
1748-603: The Miller cycle . Together, this redesign could significantly reduce fuel consumption and NO x emissions. [REDACTED] [REDACTED] [REDACTED] Starting position, intake stroke, and compression stroke. [REDACTED] [REDACTED] [REDACTED] Ignition of fuel, power stroke, and exhaust stroke. Wilhelm Maybach From the late 19th century Wilhelm Maybach, together with Gottlieb Daimler , developed light, high-speed internal combustion engines suitable for land, water, and air use. These were fitted to
1824-585: The fuel economy improvements the Atkinson cycle can provide. The diesel engine is a technical refinement of the 1876 Otto-cycle engine. Where Otto had realized in 1861 that the efficiency of the engine could be increased by first compressing the fuel mixture prior to its ignition, Rudolf Diesel wanted to develop a more efficient type of engine that could run on much heavier fuel. The Lenoir , Otto Atmospheric, and Otto Compression engines (both 1861 and 1876) were designed to run on Illuminating Gas (coal gas) . With
1900-433: The Atkinson, its expansion ratio can differ from its compression ratio and, with a power stroke longer than its compression stroke, the engine can achieve greater thermal efficiency than a traditional piston engine. While Atkinson's original design is no more than a historical curiosity, many modern engines use unconventional valve timing to produce the effect of a shorter compression stroke/longer power stroke, thus realizing
1976-520: The Daimler Motor Corporation or DMG for short, which was dedicated to the construction of small high-speed internal combustion engines for land, water, or air transport. Maybach was Chief Designer. After spending long hours debating which fuel was best to use in Otto's four-stroke engine, which had normally used methane gas as a fuel, they turned to petroleum which until then had been used mainly as
2052-653: The First World War, the Versailles Treaty of 1919 prohibited airship production in Germany, so Maybach turned to making high-speed diesel engines for naval and railroad use, and petrol engines for automobiles, but not complete automobiles. Many of the small automakers in Germany built their own engines for cost reasons and only the Dutch Spyker company was interested in taking Maybach engines. Wilhelm Maybach turned down
2128-608: The Mercedes-Benz S-Class under the new Mercedes-Maybach brand. Wilhelm Maybach was born in Heilbronn , Baden-Württemberg, in 1846, the son of a carpenter and his wife Luise. He had four brothers. When he was eight years old the family moved from Löwenstein near Heilbronn to Stuttgart . His mother died in 1854 and his father in 1856. After his relatives published an announcement in the Stuttgarter Anzeiger newspaper,
2204-465: The Phoenix, it gained worldwide attention, pioneering the use of four cylinders in the automobile and featuring: Maybach's creations are considered among the finest motors of the late 19th century. His inventions became indispensable for any model by any automaker in the world. He became recognised as the backbone of France's early automobile industry, where he was hailed as the "King of Designers". Daimler
2280-474: The actual four-stroke and two-stroke cycles is not a simple task. However, the analysis can be simplified significantly if air standard assumptions are utilized. The resulting cycle, which closely resembles the actual operating conditions, is the Otto cycle. During normal operation of the engine, as the air/fuel mixture is being compressed, an electric spark is created to ignite the mixture. At low rpm this occurs close to TDC (Top Dead Centre). As engine rpm rises,
2356-426: The air has been compressed twice and then gains more potential volume in the combustion but it is only expanded in one stage. A turbocharger is a supercharger that is driven by the engine's exhaust gases, by means of a turbine . A turbocharger is incorporated into the exhaust system of a vehicle to make use of the expelled exhaust. It consists of a two piece, high-speed turbine assembly with one side that compresses
Four-stroke power valve system - Misplaced Pages Continue
2432-452: The bore diameter is larger than its stroke length is an oversquare engine, conversely, an engine with a bore diameter that is smaller than its stroke length is an undersquare engine. The valves are typically operated by a camshaft rotating at half the speed of the crankshaft . It has a series of cams along its length, each designed to open a valve during the appropriate part of an intake or exhaust stroke. A tappet between valve and cam
2508-591: The car in large numbers making it the commercial success that convinced the company directors there was a future in automobiles. Production increased greatly and DMG rapidly increased in size and number of employees. DMG officially registered the Mercedes trademark in June 1902. In 1902, a fire destroyed DMG's Cannstatt facilities and the company moved to Stuttgart- Untertürkheim . Maybach continued with his innovations: DMG demoted him to an "Inventor's Office" causing him to leave
2584-463: The commercial issues and Maybach the design department. In 1889 they built their first automobile to be designed from scratch rather than as an adaptation of a stagecoach. It was publicly launched by both inventors in Paris in October 1889. Daimler's engine licenses began to be taken up throughout the world, starting the modern car industry in: Resources were scant to keep the business going, as neither
2660-623: The company again in 1907. DMG replaced him with Paul Daimler. That same year, the German Engineers Association (VDI) recognized Wilhelm Maybach as an honorary member. In 1900, Maybach had his first contact with Count Ferdinand von Zeppelin who sought to improve the engines of the Zeppelin LZ1 airship. Maybach built some engines for him based on sketches of a 150 hp unit created by his son, Karl, while at DMG. In 1908, Count Zeppelin attempted to sell his models LZ3 and LZ4 to
2736-551: The company at the great Paris Exposition Universelle (1889) . Sales increased, mostly from the Neckar motorboat. In June 1887, Daimler bought land in the Seelberg Hills of Cannstatt. The workshop was some distance from the town on Ludwig Route 67, because Cannstatt's mayor objected to the presence of the workshop in the town. It covered 2,903 square meters and cost 30,200 goldmarks. They initially employed 23 people. Daimler managed
2812-524: The contract because he could not agree to its conditions. Instead, he opted to build complete automobiles and the factory began to produce Maybach limousines in 1921. The first model, the Maybach W3, was shown at the 1921 Automobile Exposition in Berlin and featured It was produced until 1928, selling 300 units, mostly with sedan bodies; the two-seat sport version was less successful. The Maybach W5 followed, with
2888-436: The current standard of 25 mpg ‑US (9.4 L/100 km; 30.0 mpg ‑imp ). As automakers look to meet these standards by 2016, new ways of engineering the traditional internal combustion engine (ICE) have to be considered. Some potential solutions to increase fuel efficiency to meet new mandates include firing after the piston is farthest from the crankshaft, known as top dead centre , and applying
2964-474: The efficiency of the compression engine. Higher compression ratios also mean that the distance that the piston can push to produce power is greater (which is called the expansion ratio ). The octane rating of a given fuel is a measure of the fuel's resistance to self-ignition. A fuel with a higher numerical octane rating allows for a higher compression ratio, which extracts more energy from the fuel and more effectively converts that energy into useful work while at
3040-502: The energy generated by combustion is converted into useful rotational energy at the output shaft of the engine, while the remainder being lost due to waste heat, friction and engine accessories. There are a number of ways to recover some of the energy lost to waste heat. The use of a turbocharger in diesel engines is very effective by boosting incoming air pressure and in effect, provides the same increase in performance as having more displacement. The Mack Truck company, decades ago, developed
3116-485: The engine sales nor the worldwide proceeds from their patents were yielding enough money. Fresh capital was injected by bringing in the financiers Max von Duttenhofer and William Lorenz , former munitions makers, who were associated with Kilian von Steiner , the owner of a German investment bank. The company was taken public. In 1890, Daimler and Maybach together founded the Daimler Motoren Gesellschaft,
Four-stroke power valve system - Misplaced Pages Continue
3192-412: The engine's performance and/or fuel efficiency could be improved by improving the overall efficiency of the cycle. It has been found that even if 6% of the entirely wasted heat is recovered it can increase the engine efficiency greatly. Many methods have been devised in order to extract waste heat out of an engine exhaust and use it further to extract some useful work, decreasing the exhaust pollutants at
3268-560: The engines burst, nearly killing Diesel. He persisted, and finally created a successful engine in 1893. The high-compression engine, which ignites its fuel by the heat of compression, is now called the diesel engine, whether a four-stroke or two-stroke design. The four-stroke diesel engine has been used in the majority of heavy-duty applications for many decades. It uses a heavy fuel containing more energy and requiring less refinement to produce. The most efficient Otto-cycle engines run near 30% thermal efficiency. The thermodynamic analysis of
3344-420: The first high-speed Otto engine in 1883. In 1885, they produced the first automobile to be equipped with an Otto engine. The Daimler Reitwagen used a hot-tube ignition system and the fuel known as Ligroin to become the world's first vehicle powered by an internal combustion engine. It used a four-stroke engine based on Otto's design. The following year, Karl Benz produced a four-stroke engined automobile that
3420-436: The first of their engines fueled by Ligroin . This engine was patented on 16 December 1883. It achieved Daimler's goal of being small and running fast enough to be useful at 750 rpm (soon after up to 900). Daimler had three engines built in 1884. Maybach persuaded him to put one in a vehicle, the result being the Reitwagen . In 1884, Maybach's second son Adolf was born. By the end of 1885, Maybach and Daimler developed
3496-507: The first of their engines, which is regarded as a precursor to all modern petrol engines . It featured: In 1885, they created the first float-fed carburetor , which mixed evaporated gasoline with air to allow its efficient use as fuel. It was used that year on a larger but still compact version of the engine, now with a vertical cylinder, that featured: Daimler baptized it the Standuhr (lit. "grandfather clock" ), because of its resemblance to
3572-529: The government. On 5 August, LZ4 exploded against a row of trees after attempting an emergency landing when its engines failed. This was far from being the end for the airship project as 6.25 million goldmarks were raised in a donation campaign after the accident. Count Zeppelin founded the Luftschiffbau Zeppelin GmbH, the company that built the Zeppelin airships. Maybach had to hold off joining
3648-434: The intake air, and the other side that is powered by the exhaust gas outflow. When idling, and at low-to-moderate speeds, the turbine produces little power from the small exhaust volume, the turbocharger has little effect and the engine operates nearly in a naturally aspirated manner. When much more power output is required, the engine speed and throttle opening are increased until the exhaust gases are sufficient to 'spool up'
3724-546: The local pressure, inducing the formation of larger-amplitude negative reflected expansion waves. A servo motor controlled by the ECU opens and shuts the valve. The valve goes from being almost fully closed at idle speed, through to fully open at higher engine speeds. This ensures low to mid-range performance, more linear power output and reduced exhaust noise levels while the valve is in its reduced opening position. Four-stroke engine A four-stroke (also four-cycle ) engine
3800-424: The mechanical parts of the engine. The rod-to-stroke ratio is the ratio of the length of the connecting rod to the length of the piston stroke. A longer rod reduces sidewise pressure of the piston on the cylinder wall and the stress forces, increasing engine life. It also increases the cost and engine height and weight. A "square engine" is an engine with a bore diameter equal to its stroke length. An engine where
3876-571: The names Honda Titanium Exhaust Valve (HTEV) and Honda Variable Intake/Exhaust (H-VIX), appearing on the CBR600RR and Honda CBR929RR . Suzuki 's version is called Suzuki Exhaust Tuning (SET). The system is also used on the Triumph Daytona 675 triple . At low engine speeds, the wave pressure within the pipe network is low. A full oscillation of the Helmholtz resonance occurs before the exhaust valve
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#17330857416773952-462: The neighbors that it was a birthday gift for Mrs. Daimler. Maybach supervised the installation of an enlarged 1.5 hp Grandfather Clock engine onto the coach, and installed a belt drive to the wheels. The vehicle reached 15 km/h (9.3 mph) when tested on the road to Untertürkheim. Maybach and Daimler went on to prove the engine in many other ways, including: By 1887 they were licensing their first patents abroad, and Maybach represented
4028-540: The new company for a while as he was still in litigation with DMG, so Karl took his place. On 23 March 1909, a deal was finally signed, creating an engine subsidiary to Luftschiffbau Zeppelin at Bissingen /Enz, in Württemberg . Wilhelm Maybach was Technical Assistant and Karl was Technical Manager. Their first designs reached 72 km/h (45 mph). Wilhelm Maybach moved his company to Friedrichshafen and renamed it Luftfahrzeug-Motoren-GmbH . Karl and Wilhem held 20% of
4104-415: The piston speed for industrial engines to about 10 m/s. The output power of an engine is dependent on the ability of intake (air–fuel mixture) and exhaust matter to move quickly through valve ports, typically located in the cylinder head . To increase an engine's output power, irregularities in the intake and exhaust paths, such as casting flaws, can be removed, and, with the aid of an air flow bench ,
4180-767: The post office in Maulbronn . On 6 July 1879 Karl Maybach was born, the first of their three children. In 1880, Daimler and Otto had serious disagreements, resulting in Daimler's leaving Deutz-AG. Daimler received 112,000 goldmarks in Deutz-AG shares as compensation for patents granted to him and Maybach. Maybach also left shortly afterwards, and followed his friend to found a new company in Cannstatt . In 1882, Maybach moved to Taubenheimstrasse in Cannstatt, Stuttgart, where Daimler had purchased
4256-421: The power output limits of an internal combustion engine relative to its displacement. Most commonly, the supercharger is always running, but there have been designs that allow it to be cut out or run at varying speeds (relative to engine speed). Mechanically driven supercharging has the disadvantage that some of the output power is used to drive the supercharger, while power is wasted in the high pressure exhaust, as
4332-472: The problem, with no success. In 1864, Otto and Eugen Langen founded the first internal combustion engine production company, NA Otto and Cie (NA Otto and Company). Otto and Cie succeeded in creating a successful atmospheric engine that same year. The factory ran out of space and was moved to the town of Deutz , Germany in 1869, where the company was renamed to Deutz Gasmotorenfabrik AG (The Deutz Gas Engine Manufacturing Company). In 1872, Gottlieb Daimler
4408-497: The radii of valve port turns and valve seat configuration can be modified to reduce resistance. This process is called porting , and it can be done by hand or with a CNC machine. An internal combustion engine is on average capable of converting only 40-45% of supplied energy into mechanical work. A large part of the waste energy is in the form of heat that is released to the environment through coolant, fins etc. If somehow waste heat could be captured and turned to mechanical energy,
4484-399: The ring and the cylinder wall, which causes a loss of cylinder pressure and power. If an engine spins too quickly, valve springs cannot act quickly enough to close the valves. This is commonly referred to as ' valve float ', and it can result in piston to valve contact, severely damaging the engine. At high speeds the lubrication of piston cylinder wall interface tends to break down. This limits
4560-502: The same motivation as Otto, Diesel wanted to create an engine that would give small industrial companies their own power source to enable them to compete against larger companies, and like Otto, to get away from the requirement to be tied to a municipal fuel supply. Like Otto, it took more than a decade to produce the high-compression engine that could self-ignite fuel sprayed into the cylinder. Diesel used an air spray combined with fuel in his first engine. During initial development, one of
4636-406: The same time preventing engine damage from pre-ignition. High Octane fuel is also more expensive. Many modern four-stroke engines employ gasoline direct injection or GDI. In a gasoline direct-injected engine, the injector nozzle protrudes into the combustion chamber. The direct fuel injector injects gasoline under a very high pressure into the cylinder during the compression stroke, when the piston
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#17330857416774712-491: The same time. Use of the Rankine Cycle , turbocharging and thermoelectric generation can be very useful as a waste heat recovery system. One way to increase engine power is to force more air into the cylinder so that more power can be produced from each power stroke. This can be done using some type of air compression device known as a supercharger , which can be powered by the engine crankshaft. Supercharging increases
4788-508: The shares with an arrangement for Karl to inherit. They kept supplying Zeppelin , but worked on other airship engines too. In 1912, the company adopted the name Maybach-Motorenbau GmbH (Maybach Engine Construction Company). In 1916, they developed a 160 hp aircraft engine which sold 2000 units before the end of World War I . In 1916, Wilhelm Maybach was awarded an Honorary Doctorate by the Technical University of Stuttgart . After
4864-515: The signing of the Versailles Treaty in 1919 the company started producing large luxury vehicles, branded as "Maybach". He died in 1929 and was succeeded by his son Karl Maybach . From around 1936 Maybach-Motorenbau designed and made almost all the engines fitted in German tanks and half-tracks used during World War 2, including those for the Panther , Tiger I and Tiger II heavy tanks . Continuing after
4940-452: The speed of the flame front does not change so the spark point is advanced earlier in the cycle to allow a greater proportion of the cycle for the charge to combust before the power stroke commences. This advantage is reflected in the various Otto engine designs; the atmospheric (non-compression) engine operates at 12% efficiency whereas the compressed-charge engine has an operating efficiency around 30%. A problem with compressed charge engines
5016-757: The time he was 19 years old, he was a qualified designer working on stationary engines. His workshop manager, Gottlieb Daimler, then 29, noticed his efforts and took him on as his main assistant, a post he held until Daimler's death in 1900. In 1869, Maybach followed Daimler to Maschinenbau-Gesellschaft Karlsruhe AG in Karlsruhe , a manufacturer of heavy locomotives. Daimler was on the Executive Committee and they spent long nights discussing new designs for engines, pumps, lumber machinery, and metalworking. In 1872, Daimler moved to Deutz-AG-Gasmotorenfabrik in Cologne , then
5092-407: The turbocharger's turbine to start compressing much more air than normal into the intake manifold. Thus, additional power (and speed) is expelled through the function of this turbine. Turbocharging allows for more efficient engine operation because it is driven by exhaust pressure that would otherwise be (mostly) wasted, but there is a design limitation known as turbo lag . The increased engine power
5168-423: The use of a glow plug . The maximum amount of power generated by an engine is determined by the maximum amount of air ingested. The amount of power generated by a piston engine is related to its size (cylinder volume), whether it is a two-stroke engine or four-stroke design, volumetric efficiency , losses, air-to-fuel ratio, the calorific value of the fuel, oxygen content of the air and speed ( RPM ). The speed
5244-438: The valves not closing properly. This results in a loss of performance and possibly overheating of exhaust valves. Typically, the clearance must be readjusted each 20,000 miles (32,000 km) with a feeler gauge. Most modern production engines use hydraulic lifters to automatically compensate for valve train component wear. Dirty engine oil may cause lifter failure. Otto engines are about 30% efficient; in other words, 30% of
5320-536: The war, Maybach Motorenbau remained a subsidiary of Luftschiffbau Zeppelin , making diesel engines. During the 1960s Maybach came under the control of Daimler-Benz and was renamed MTU Friedrichshafen . In 2002 the Maybach brand name was revived for a luxury make but it was not successful. On 25 November 2011 Daimler-Benz announced they would cease producing automobiles under the Maybach brand name in 2013. In 2014, Daimler announced production of an ultra-luxury edition of
5396-531: The world's first motorcycle, motorboat, and after Daimler's death, a new automobile introduced in late 1902, the Mercedes model, built to the specifications of Emil Jellinek . Maybach rose to become technical director of the Daimler Motoren Gesellschaft (DMG) but did not get along with its chairmen. As a result, Maybach left DMG in 1907 to found Maybach-Motorenbau GmbH together with his son Karl in 1909; they manufactured Zeppelin engines. After
5472-455: The world's largest manufacturer of stationary gas engines. Nicolaus Otto , part owner of the company, focused on engine development with Daimler. Maybach joined them as Chief Designer. In 1876, Nicolaus Otto patented the Otto cycle engine. It was a four-stroke cycle gas internal combustion engine with intake, compression, power, and exhaust strokes. One of Otto's more than 25 patents on this engine
5548-664: Was forced out of his post as Technical Director at DMG and resigned in 1893, which damaged DMG's prestige. However, in 1894, a British industrialist, Frederick Simms , purchased the rights to the Phoenix engine for 350,000 marks and stabilised the company's finances. He also made it a condition that Daimler be re-employed. In 1895 DMG assembled its 1,000th engine, and Maybach also returned as Chief Engineer, obtaining 30,000 goldmarks worth of shares through his original contract with Gottlieb Daimler. Maybach patented more automobile inventions, including: Around this time though Maybach suffered two setbacks. His teenage second son, Adolf, suffered
5624-535: Was later challenged and overturned, allowing Daimler and Maybach to produce their high-speed engine. Also in 1876, Maybach was sent to show Deutz's engines at the Philadelphia World's Fair (USA) . On returning to Cologne in 1877, he concentrated on improving the four-stroke design to prepare it for its impending commercial launch. In 1878, Maybach married Bertha Wilhelmine Habermaas, a friend of Daimler's wife, Emma Kunz. Her family members were landowners who ran
5700-470: Was rejected as a member of the Board of Management and left the company on 11 February 1891, and continued his design work from his own house, financed by Daimler. In late 1892, he set up a shop in the ballroom of the former Hermann Hotel and Winter Garden where he employed 17 workers, five of which were paid by Daimler. In 1894 Maybach designed his third engine model, together with Daimler and his son Paul. Used in
5776-406: Was technical director and Wilhelm Maybach was the head of engine design. Daimler was a gunsmith who had worked on the Lenoir engine. By 1876, Otto and Langen succeeded in creating the first internal combustion engine that compressed the fuel mixture prior to combustion for far higher efficiency than any engine created to this time. Daimler and Maybach left their employ at Otto and Cie and developed
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