30th International Vienna Motor Symposium
The Breakthrough of Common Rail System: Closed-loop Control Strategy Using Injector with Built-in Pressure Sensor
Authors
Masahiko Miyaki, Katsuhiko Takeuchi, Koji Ishizuka, Satoru Sasaki, DENSO Corporation, Japan
Year
2009
Print Info
Fortschritt-Berichte VDI, Reihe 12, Nr. 697
Summary
DENSO has developed the world's first common rail system injector with built-in pressure sensor. This technology makes it possible to execute closed loop injection control in the cylinders, which has been one of the most challenging issues for diesel engine systems. Attaining both further fuel economy and emission reduction requires further technological innovation in the air system and fuel injection system. With the combustion technology that has been developed, stable combustion with high exhaust gas recirculation (EGR) is required in order to reduce nitrogen oxide’s (NOx), however robustness is also required in order to handle bio-diesel and low-cetane value fuels and the range for attaining this is extremely narrow. Therefore, for the fuel injection system, in addition to conventional high pressure and high response, lifetime accuracy compensation is key.
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