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TDI (engine)

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An engine control unit ( ECU ), also called an engine control module ( ECM ), is a device that controls various subsystems of an internal combustion engine . Systems commonly controlled by an ECU include the fuel injection and ignition systems.

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59-611: TDI ( Turbocharged Direct Injection ) is the Volkswagen Group 's term for its current common rail direct injection turbodiesel engine range that have an intercooler in addition to the turbo compressor. TDI engines are used in motor vehicles sold by the Audi, Volkswagen, SEAT and Skoda marques, as well as boat engines sold by in Volkswagen Marine and industrial engines sold by Volkswagen Industrial Motor . The first TDI engine,

118-431: A $ 2.8 billion criminal fine for rigging diesel-powered vehicles to cheat on government emissions tests". The "unprecedented" plea deal formalized a punishment that Volkswagen AG agreed to earlier in 2017. In addition, the plea deal includes a $ 1.5 billion settlement for various environmental, customs and financial violations. Overall, Volkswagen will pay more than $ 30 billion in penalties and lawsuit settlements related to

177-569: A 51% controlling stake in SEAT, making it the first non-German subsidiary of the Volkswagen Group. On 23 December the same year, it became the Spanish company's major shareholder by increasing its share up to 75%. In 1990—after purchasing its entire equity—Volkswagen AG took over the full ownership of SEAT, making the company a wholly owned subsidiary, and on 28 March 1991, another step to the expansion of

236-518: A 90.1% stake in the Italian automotive design house Italdesign Giugiaro . In less than three months, the transaction had been completed making the Italian firm a member of the Volkswagen Group. Since 2013 the Volkswagen Group has held a 89.7% stake in Traton . In 2015 research showed a security flaw in the keyless ignition of Volkswagen and other carmakers' vehicles. Volkswagen spent two years trying to keep

295-564: A corporate "Strategy 2025" that focuses on electrification of its portfolio. The VW Group developed the Volkswagen Group MEB platform chassis that will be utilized in a range of various cars and light utility vehicles across several VW Group marques due to its flexibility and floor-mounted battery. As of May 2018, the VW Group has committed $ 48 billion in car battery supplies and plans to outfit 16 factories to build electric cars by

354-622: A drop in Chinese sales. On 18 September 2015, the US EPA announced that Volkswagen had installed a "defeat device" software code in the diesel models sold in the US from 2009 to 2015. The code was intended to detect when an emissions test was being conducted, and altered emissions controls for better compliance. Off the test stand, the controls were relaxed, and emissions jumped 35 to 40 times regulatory levels according to investigators at West Virginia University and

413-488: A motor-car … it is quite unattractive to the average buyer … To build the car commercially would be a completely uneconomic enterprise." In 1948, the Ford Motor Company of USA was offered Volkswagen, but Ernest Breech , a Ford executive vice president, said he did not think either the plant or the car was "worth a damn." Breech later said that he would have considered merging Ford of Germany and Volkswagen, but after

472-599: A profit warning, saying it had set aside $ 7 billion to fix the fraud. On 23 September 2015, Martin Winterkorn announced his resignation from the CEO position after a crisis meeting of the company board. On 25 September 2015 Matthias Müller was named CEO. Müller was the head of the Porsche marque within the VW corporate umbrella. On 21 April 2017, a U.S. federal judge ordered Volkswagen "to pay

531-475: A round of the championship when it won the round at Donington Park . Volkswagen Group Volkswagen AG ( German: [ˈfɔlksˌvaːɡn̩] ), known internationally as the Volkswagen Group , is a German public multinational conglomerate manufacturer of passenger and commercial vehicles, motorcycles, engines and turbomachinery. Headquartered in Wolfsburg , Lower Saxony , Germany, and since

590-704: A straight-five engine, was produced for the 1989 Audi 100 TDI sedan. In 1999, common rail fuel injection was introduced in the V8 engine used by the Audi A8 3.3 TDI Quattro. From 2006 until 2014, Audi successfully competed in the LMP1 category of motor racing using TDI engine-powered racing cars. TDI engines installed in 2009 to 2015 model year Volkswagen Group cars sold through 18 September 2015 had an emissions defeat device , which activated emissions controls only during emissions testing. The emissions controls were suppressed otherwise, allowing

649-687: A technology cooperation and joint development agreement on platform and software. Rooted in Europe, the Volkswagen Group operates in 153 countries. Volkswagen Passenger Cars is the Group's original marque, and the other major subsidiaries include passenger car marques such as Audi , Bentley , Lamborghini , Porsche , SEAT , and Škoda . Volkswagen AG also has operations in commercial vehicles , owning Volkswagen Commercial Vehicles , along with controlling stakes in truck, bus and diesel engine manufacturers Scania AB and MAN SE . The Volkswagen Group comprises

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708-714: The Audi Brand Group focused on more sporty values – consisted of Audi, SEAT and Lamborghini – and the Volkswagen Brand Group on the field of classic values – consisted of Volkswagen, Skoda, Bentley and Bugatti  – with each Brand Group's product vehicles and performance being respectively under the higher responsibility of Audi and Volkswagen brands. Volkswagen Group revealed on 24 October 2009 that it had made an offer to acquire long-time partner and German niche automotive manufacturer Wilhelm Karmann GmbH out of bankruptcy protection. In November 2009,

767-981: The Ducati name, light commercial vehicles under the Volkswagen Commercial Vehicles brand, and heavy commercial vehicles via the marques of the listed subsidiary Traton ( International Motors , MAN , Scania and Volkswagen Truck & Bus ). Software and techstack under CARIAD . It is divided into two primary divisions : the Automotive Division and the Financial Services Division. As of 2008, it had about 342 subsidiary companies. Volkswagen also has three joint ventures in China, FAW-Volkswagen , SAIC Volkswagen and Volkswagen Anhui . The company has operations in roughly 150 countries, and it has 100 production facilities across 27 countries. Volkswagen

826-606: The Volkswagen Group 32v TDI V8 engine used in the 1999 Audi A8 3.3 TDI Quattro, two years after the 1997 Alfa Romeo 156 2.4-L JTD became the first passenger car to use common rail injection. In 1999, the Volkswagen 1.2-litre TDI won the International Engine of the Year categories for "1.0 to 1.4 litres" and "Best Fuel Economy". In 2000, a fuel system using unit injectors (called "Pumpe Düse" by Volkswagen) began to replace

885-413: The "TDI" marketing term is only used by Volkswagen Group and Land Rover . Volkswagen Group uses the term SDI (which stands for "Suction Diesel Injection") for its naturally aspirated (i.e. non-turbocharged) direct-injection diesel engines. Prior to Volkswagen Group's first TDI engine, the first turbocharged diesel engine used in a passenger car was an indirect injection five-cylinder engine fitted to

944-775: The 1978 Mercedes-Benz 300SD (W116) 300 SD sedan. The first turbodiesel engine with direct injection was the 1986 Fiat Croma 2.0 TD i.d. liftback sedan. Three years after the Fiat Croma, Volkswagen Group's first TDI engine was introduced in the 1989 Audi 100 TDI sedan. The Audi 100 was powered by the Volkswagen 2.5 R5 TDI straight-five engine which used an electronic distributor injection pump (called "VerteilerPumpe" by Volkswagen) and two-stage direct injection. The initial version of this engine generated 88 kW (118 hp) at 3,250 rpm and 275 N⋅m (203 lb⋅ft) at 2,500 rpm. TDI engines using common rail fuel injection (using piezoelectric fuel injectors) were introduced with

1003-723: The 24 Hours of Le Mans eight times (the 2009 race was won by another diesel-powered car, the Peugeot 908 HDi FAP ). In the World Touring Car Championship (WTCC) racing series, the SEAT León TDI won the 2008 championship and the 2009 championship for drivers and manufacturers. In 2008, the SEAT Leon TDI also competed in the British Touring Car Championship (BTCC) and became the first diesel car to win

1062-570: The 6 controls used to initiate hard acceleration with one control, however the system could cause surging and stalling problems. In the early 1970s, the Japanese electronics industry began producing integrated circuits and microcontrollers used for controlling engines. The Ford EEC (Electronic Engine Control) system, which utilized the Toshiba TLCS-12 microprocessor, went into mass production in 1975. The first Bosch engine management system

1121-472: The British Army Royal Electrical and Mechanical Engineers (REME) took control of the bomb-shattered factory for use in repairing British Army vehicles, pending the expected disposal of the plant tooling and equipment as war reparations . However, no British car manufacturer was interested. A British report on the car said that "the vehicle does not meet the fundamental technical requirement of

1180-566: The British Government handed the company back over to the German state, and it was managed by former Opel chief Heinrich Nordhoff . Production of the Type 60 Volkswagen (re-designated Type 1 ) started slowly after the war due to the need to rebuild the plant and because of the lack of raw materials, but production grew rapidly in the 1950s and 1960s. The company began introducing new models based on

1239-560: The California Air Resources Board. About 482,000 vehicles are under the recall order, a potential $ 18 billion ($ 37,500 per violation) in fines are pending, and news accounts speculate a criminal indictment for the deception is certain. The VW Group CEO, Martin Winterkorn , said he was "deeply sorry" and ordered an external investigation. The software code was only revealed when the EPA refused to certify VW's 2016 models for sale in

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1298-576: The ECU has continuous control of when each of the intake and exhaust valves are opened and by how much. One of the earliest attempts to use such a unitized and automated device to manage multiple engine control functions simultaneously was the created by BMW in 1939 Kommandogerät system used by the BMW 801 14-cylinder radial engine which powered the Focke-Wulf Fw 190 V5 fighter aircraft. This device replaced

1357-473: The TDI engines to exceed legal limits on emissions. Volkswagen has admitted to using the illegal device in its TDI diesel cars. TDI is the combination of two existing diesel engine technologies: Most TDI engines also use an intercooler to lower the temperature (and therefore increase the density) of the compressed air before it enters the cylinder. Similar technology has been used by other automotive companies, but

1416-808: The Type 1, all with the same basic air-cooled, rear-engine, rear-drive platform. These included the Volkswagen Type 2 in 1950, the Volkswagen Karmann Ghia in 1955, the Volkswagen Type 3 in 1961, the Volkswagen Type 4 in 1968, and the Volkswagen Type 181 in 1969. In 1960, upon the flotation of part of the German federal government 's stake in the company on the German stock market, its name became Volkswagenwerk Aktiengesellschaft (usually abbreviated to Volkswagenwerk AG ). On 1 January 1965, Volkswagenwerk acquired Auto Union GmbH from its parent company Daimler-Benz . The new subsidiary went on to produce

1475-430: The US between 2009 and 2015 had an emissions compliance defeat device installed. The defeat device, in the form of specially crafted engine management unit firmware , detects emissions testing conditions, and in such conditions will cause the vehicle to comply with emissions regulations by properly activating all emissions controls. However, under normal driving conditions, the emissions controls are suppressed, allowing

1534-552: The US unless the corporation provided full disclosure. On Sunday, 20 September 2015, VW Group announced it was halting the sale of its four-cylinder diesel models in the US. The US EPA press release on its Notice of Violation, and the California Air Resources Board letter dated 18 September 2015 contain significant chronological detail of the agencies interaction with VW on the issue. On 22 September 2015, VW AG admitted that 11 million cars worldwide had been fitted with software intended to deceive emissions testing . The company issued

1593-782: The United States via American depositary receipts since 1988, currently on the OTC Marketplace . Volkswagen delisted from the London Stock Exchange in 2013. The government of Lower Saxony holds 12.7% of the company's shares, granting it, by law, 20% of the voting rights. Volkswagen (meaning 'People's car' in German) was founded in Berlin as the Gesellschaft zur Vorbereitung des Deutschen Volkswagens mbH ('Limited Liability Company for

1652-483: The Volkswagen Group are (as at the financial year ending March 3): Engine control unit The earliest ECUs (used by aircraft engines in the late 1930s) were mechanical-hydraulic units; however, most 21st-century ECUs operate using digital electronics . The main functions of the ECU are typically: The sensors used by the ECU include: Other functions include: In a camless piston engine (an experimental design not currently used in any production vehicles),

1711-532: The Volkswagen Type 1, and commonly called the Volkswagen Beetle . This vehicle was designed by Ferdinand Porsche 's consulting firm, and the company was backed by the support of Adolf Hitler . On 16 September 1938, Gezuvor was renamed Volkswagenwerk GmbH ('Volkswagen Factory GmbH'). Shortly after the factory at Fallersleben was completed World War II started, and the plant primarily manufactured

1770-454: The Volkswagen portfolio in 1998: Bentley , Lamborghini , and Bugatti . On 30 May 2000, after having gradually raised its equity share, Volkswagen AG took over the full ownership of Škoda Auto, making the company a wholly owned subsidiary. From 2002 up to 2007, the Volkswagen Group's automotive division was restructured so that two major Brand Groups with different profile would be formed,

1829-631: The distributor injection pump systems (except for the V8 engine, which used common rail design). In 2003, upgraded fuel injectors using a piezoelectric design began to replace the previous solenoid-operated unit injectors. Since 2009, most of the Volkswagen Group TDI engines have switched from unit injectors to common rail injection. On 18 September 2015 the US EPA and California Air Resources Board served notice to VW that approximately 480,000 VW and Audi automobiles equipped with 2.0 TDI engines sold in

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1888-684: The end of 2022. According to VW Group CEO Dr. Herbert Diess , the company will offer 25 electric models and 20 plug-in hybrids by 2020. Volkswagen Group came under pressure for cooperating with the Chinese government in the region of Xinjiang . In that same region, western-funded NGOs accused the Chinese government of having committed human rights abuses against the Uyghur minority group, which included mass surveillance , incarceration, and forced labor. After these accusations emerged, Volkswagen responded, "We do not assume any of our employees are forced laborers." Süddeutsche Zeitung claimed that Volkswagen

1947-437: The engine to produce more torque and get better fuel economy, at the expense of emitting up to 40 times more nitrogen oxides than allowed by law. Such NOx emission levels are not in compliance with US regulations. VW has since admitted to these allegations, and said that the illegal software was in use in its diesel cars worldwide, affecting some 11 million vehicles. The first TDI engine used by Volkswagen Group for motor racing

2006-528: The first post-war Audi models, the Audi F103 series, shortly afterwards. Another German manufacturer, NSU Motorenwerke AG , was merged into Auto Union on 26 August 1969, creating a new company, Audi NSU Auto Union AG (later renamed AUDI AG in 1985). From the late 1970s to 1992, the acronym V.A.G. was used by Volkswagen AG as a brand for group-wide activities, such as distribution and leasing. Contrary to popular belief, "V.A.G." had no official meaning, and

2065-493: The following vehicle manufacturers and their corresponding brands : Here are the brands operated under the Volkswagen Group: Other subsidiaries and shareholdings: The Group also owns five defunct marques which are managed through the companies Auto Union GmbH and NSU GmbH, both of which are 100% owned by AUDI AG: In November 2018 Volkswagen's market capitalization was valued at US$ 73.8 billion. The key trends for

2124-569: The group's activities was made through the signing of a joint-venture partnership agreement with Škoda automobilová a.s. of Czechoslovakia , accompanied with the acquisition of a 30% stake in the Czech car manufacturer on 16 April 1991. On 19 December 1994, the group began the acquisition of Škoda Auto by raising its share to 60.3%. Later, on 11 December 1995, it became the Czech company's largest and controlling shareholder by increasing its share up to 70%. Three prestige automotive marques were added to

2183-474: The late 2000s is a publicly traded family business owned by Porsche SE , which in turn is half-owned but fully controlled by the Austrian-German Porsche and Piëch family . The company also offers related services, including financing, leasing, and fleet management. In 2016, it was the world's largest automaker by sales, and keeping this title in 2017, 2018, and 2019, selling 10.9 million vehicles and

2242-426: The latter became its bestseller. Volkswagen acquired a controlling stake in SEAT in 1986, making it the first non-German marque of the company, and acquired control of Škoda in 1994, of Bentley, Lamborghini, and Bugatti in 1998, Scania in 2008 and of Ducati, MAN, and Porsche in 2012. The company's operations in China have grown rapidly in the past decade, with the country becoming its largest market. In 2015, Volkswagen

2301-602: The military Kübelwagen (Porsche Type 82) and the related amphibious Schwimmwagen (Type 166), both of which were derived from the Volkswagen. Only a small number of Type 60 Volkswagens were made during this time. The Fallersleben plant also manufactured the V-1 flying bomb , making the plant a major bombing target for the Allied forces. Slave labour was utilised in the Volkswagen plant, e.g. from Arbeitsdorf concentration camp. The company would admit in 1998 that it used 15,000 slaves during

2360-712: The preparation of the German People's Car', abbreviated to Gezuvor ) by the National Socialist Deutsche Arbeitsfront (German Labour Front) and incorporated in the Stadt des KdF-Wagens bei Fallersleben, ( " City of the Strength Through Joy car at Fallersleben ) on 28 May 1937. The purpose of the company was to manufacture the Volkswagen car, originally referred to as the Porsche Type 60, then

2419-473: The purchase of 19.9% of Suzuki Motor Corporation 's issued shares on 15 January 2010. Suzuki invested part of the amount received from Volkswagen into 1.49% percent of Volkswagen. In 2011, Suzuki filed a lawsuit at an arbitration court in London requesting that Volkswagen return the 19.9% stake. On 25 May 2010, it was announced that Volkswagen Group, through its subsidiary Lamborghini Holding S.p.A., had acquired

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2478-548: The remaining half of Porsche shares for 4.46 billion euros (US$ 5.58 billion) on 1 August 2012 to avoid taxes of as much as 1.5 billion euros, which would have to be paid if the wrap up happened after 31 July 2014. Volkswagen AG purchased the remaining stake in Porsche AG equaling 100% of the shares in Porsche Zwischenholding GmbH, effectively becoming its parent company as of 1 August 2012. Volkswagen AG completed

2537-535: The research from the public domain. On 3 August 2015, Nokia announced that it had reached a deal to sell its Here digital maps division to a consortium of three German automakers— BMW , Daimler AG , and Volkswagen Group, for €2.8 billion. This was seen as an indication that the automakers were interested in automated cars. Volkswagen held a 19.9% non-controlling shareholding in Suzuki between 2009 and 2015. An international arbitration court ordered Volkswagen to sell

2596-498: The scandal. In its own financial report for 2023 Volkswagen Group estimated its long, medium and short term debt at 155,6 Billion Euros. It is unclear how Volkswagen group plans to pay off that massive debt considering its falling global vehicle deliveries, planned closure of at least 3 factories in Germany after it previously closed 2 factories in Russia as well as 64% drop in profit for

2655-818: The stake back to Suzuki. On 17 September 2015, Suzuki paid $ 3.8bn to complete the stock buy-back just hours prior to a major scandal about emissions violations engulfing Volkswagen. Suzuki had wished to buy Fiat diesel engines. In 2021, Volkswagen sold their 55% stake in Bugatti to Rimac Group while transferring the remaining 45% to Porsche AG , forming a joint venture company called Bugatti Rimac . In early 2024, Volkswagen Group began looking for partners among international technology corporations to create AI labs, new digital prototypes of products and functions using artificial intelligence. In October 2024, Volkswagen plans to close at least three plants in Germany and cut jobs, facing challenges from delayed EV investments and

2714-451: The supervisory board of Volkswagen AG approved the acquisition of assets of Karmann, and planned to restart vehicle production at their Osnabrück plant in 2012. In December 2009, Volkswagen AG bought a 49.9% stake in Dr. Ing. h.c. F. Porsche AG (more commonly known as Porsche AG) in a first step towards an 'integrated automotive group' with Porsche. The merger of Volkswagen AG and Porsche SE

2773-861: The three months to the end of September 2024. Latest setback for Volkswagen came on November 21, 2024, when Swedish battery producer Northvolt filed for bankruptcy, Volkswagen previously invested 1.4 billion euros in their failed business. On November 27, 2024, Volkswagen announced sale of its Xinijang factory in China partly because "demand for combustion engine vehicles is going down". Former member of Croatian parliament Ivan Pernar warned that due to overall financial situation Volkswagen might go bankrupt just as "too big to fail" heavily indebted Evergrande Group . He also questioned how will EU tariffs on Chinese cars save Volkswagen when 50% of its sales are in China itself and not in EU, as well as its manangment decision to exit Russian market. In 2016, Volkswagen Group announced

2832-472: The war effort. German historians estimated that 80% of Volkswagen's wartime workforce was slave labour. Many of the slaves were reported to have been supplied from the concentration camps upon request from plant managers. A lawsuit was filed in 1998 by survivors for restitution for the forced labour. Volkswagen would set up a voluntary restitution fund. After the war in Europe, in June 1945, Major Ivan Hirst of

2891-510: The war, ownership of the company was in such dispute that nobody could possibly hope to be able to take it over. As part of the Industrial plans for Germany , large parts of German industry, including Volkswagen, were to be dismantled. Total German car production was set at a maximum of 10% of the 1936 car production numbers. The company survived by producing cars for the British Army, and in 1948

2950-670: Was based on transitioning to electric cars , and building a shared platform, battery systems, software and mobility solutions to use across all their brands. This involves creating the Scalable Systems Platform , as well as developing software under a new subsidiary CARIAD . Volkswagen Group aims by 2024 to transition to selling mostly electric cars. It aims to have six battery factories in Europe by 2030. In 2023, Volkswagen Group announced plans to cut costs by €10 billion ($ 11.1 billion). In February 2024, Volkswagen Group and Chinese electric vehicle manufacturer XPeng signed

3009-651: Was discovered to have used defeat devices to deceive environmental regulators about how much NO x its cars were emitting. The company was fined billions of dollars. Volkswagen Aktiengesellschaft is a public company and has a primary listing on the Frankfurt Stock Exchange , where it is a constituent of the Euro Stoxx 50 stock market index , and secondary listings on the Luxembourg Stock Exchange and SIX Swiss Exchange . It has been traded in

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3068-505: Was founded in Berlin in 1937 and incorporated in Wolfsburg to manufacture the car that would become known as the Beetle . The company's production grew rapidly in the 1950s and 1960s. In 1965, it acquired Auto Union , which subsequently produced the first postwar Audi models. Volkswagen launched a new generation of front-wheel drive vehicles in the 1970s, including the Passat , Polo and Golf ;

3127-564: Was in the Audi R10 TDI , which competed in the Le Mans Prototype (LMP) class of sports car racing. The Audi R10 recorded a victory on its debut at the 2006 12 Hours of Sebring race and then at the 2006 24 Hours of Le Mans race, with both results being the first time that a diesel-powered car had won each race. In the nine years from 2006 to 2014, the R10 and its successors ( R15 and R18 ) won

3186-609: Was never the formal name of the Volkswagen Group. On 30 September 1982, Volkswagenwerk made its first step expanding outside Germany by signing a co-operation agreement with the Spanish car manufacturer SEAT, S.A. To reflect the company's increasing global diversification from its headquarters and main plant (the Volkswagenwerk in Wolfsburg ), on 4 July 1985, the company name was changed again—to Volkswagen Aktiengesellschaft (Volkswagen AG). On 18 June 1986, Volkswagen AG acquired

3245-404: Was operating a plant in Xinjiang at a loss in order to curry favor with the Chinese government to set up more lucrative plants in other parts of China, which Volkswagen denied, saying that the decision to set up the plant in 2012 was purely based on economics. Volkswagen is still operating a plant in the region as of 2020. In 2021, Volkswagen Group released their New Auto strategy. The strategy

3304-538: Was scheduled to take place during the course of 2011. On 8 September 2011, it was announced that the planned merger "cannot be implemented within the time frame provided for in the Comprehensive Agreement". As reasons, unquantifiable legal risks, including a criminal probe into the holding's former management team were given. Both parties "remain committed to the goal of creating an integrated automotive group with Porsche and are convinced that this will take place". On 4 July 2012 Volkswagen group announced they would wrap up

3363-402: Was the Motronic 1.0 , which was introduced in the 1979 BMW 7 Series (E23) This system was based on the existing Bosch Jetronic fuel injection system, to which control of the ignition system was added. In 1981, a Delco Electronics ECU was used by several Chevrolet and Buick engines to control their fuel system (a closed-loop carburetor) and ignition system. By 1988, Delco Electronics

3422-522: Was the largest automaker by revenue in 2022. It has maintained the largest market share in Europe for over two decades. It ranked seventh in the 2020 Fortune Global 500 list of the world's largest companies. In 2023, Volkswagen Group was the largest company in the European Union and the largest car manufacturer in the world by revenue. The Volkswagen Group sells passenger cars under the Audi , Bentley , Cupra , Jetta , Lamborghini , Porsche , SEAT , Škoda and Volkswagen brands, motorcycles under

3481-416: Was the leading producer of engine management systems, producing over 28,000 ECUs per day. Such systems are used for many internal combustion engines in other applications. In aeronautical applications, the systems are known as " FADECs " (Full Authority Digital Engine Controls). This kind of electronic control is less common in piston-engined light fixed-wing aircraft and helicopters than in automobiles. This

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