![]() ![]() Shortly afterward, Lucas announced common rail contracts with Ford, Renault and Kia with production starting in 2000. Bosch’s passenger car common rail system was introduced into production in 1997 for the 1998 model year Alfa Romeo 156 and C-Class Mercedes-Benz. In 1993, Bosch-perhaps due to some pressure by Daimler-Benz-acquired the UNIJET technology initially developed by the efforts of Fiat and Elasis (a Fiat subsidiary) for further development and production. Nippondenso further developed a common rail system for commercial vehicles that they acquired from Renault and that was introduced into production in 1995 in Hino Rising Ranger trucks.However, with the cancellation of their light-duty diesel program in the mid-1980s, further development was stopped.Ī few years later, in the late 1980s and early 1990s, a number of development projects were initiated by engine OEMs and later taken up by fuel injection equipment manufacturers: Around the same time, General Motors was also developing a common rail system for application to their light-duty IDI engines. By 1985, Industrieverband Fahrzeugbau (IFA) of the former East Germany developed a common rail injection system for their W50 truck, but the prototype never entered series production and the project was abandoned a couple of years later. Considerable work was still required to improve the precision and capability of solenoid actuators.įurther development of diesel common rail systems began in earnest in the 1980s. in the early 1970s and was found to provide little benefit over existing P-L-N systems in use at the time. The SOPROMI technology was evaluated by CAV Ltd. ![]() However, it would still take 2-3 decades before regulatory pressure would spur further development and the technology would mature to be commercially viable. Work on modern day common rail fuel injection systems was pioneered in the 1960s by the Societe des Procedes Modernes D’Injection (SOPROMI). ![]() The idea of using an electrically actuated injection valve on a diesel engine with a common rail fuel system was developed by Brooks Walker and Harry Kennedy in the late 1920s and applied to a diesel engine by Atlas-Imperial Diesel Engine Company of California in the early 1930s. The fuel was metered by controlling the length of time the valves were open. ![]() Around the same time, another patent was issued in the United States to Thomas Gaff for a fuel system for a direct cylinder injection spark ignition engine using electrically actuated solenoid valves. For example, in 1913, a patent for a common rail fuel injection system with mechanically actuated injectors was issued to Vickers Ltd. Early researchers, including Rudolf Diesel, worked with fuel systems that contained some of the essential features of modern common rail diesel fuel injection systems. The merits of the common rail fuel injection system architecture have been recognized since the development of the diesel engine.
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