Delphi is introducing the next-generation Multec DCR 1600 diesel injection system, to more efficiently deliver fuel to the combustion chamber.
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Compared with today’s DCR 1400, the new system provides an increased injection pressure and more accurate control of very small volumes of fuel, introducing the option of up to five injection events during a combustion cycle and allowing for better engine combustion.
The technology used in the new common rail is based on solenoid injectors with balanced valve and feedback control strategies.
Delphi utilises a combustion feedback system called accelerometer pilot control (APC) which has been further refined to control both pilot and main injection. This closed-loop control system allows the engine management system to effectively reduce the combustion noise and emission levels. These features as well as engine performance are now even more consistent throughout the life of the vehicle.
Information from the APC enables the system to drive each injector individually so that pilot and main injection are always matched to the ideal calibration.
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By GlobalDataAnother innovation is an inlet-metering valve that controls the amount of fuel being pressurised and avoids the use of a high-pressure discharge valve mounted on the rail, as well as reduces the need for expensive fuel coolers.
Delphi diesel common rail customers include Renault-Nissan, Ford, PSA Peugeot Citroen and Hyundai-Kia.
Delphi has manufactured more than one million diesel common rail systems to date, with booked business predicted to exceed more than 2.5 million systems per year by 2006.
Future plans include the development of both an 1800 and 2000 bar injector, as well as an accumulator piezo diesel injector.
