| 摘要 |
PURPOSE:To permit to detect a valve opening pressure without providing the fuel injection valve itself with any sensor and control the valve opening pressure correctly for a long period of time by a method wherein the actual valve opening pressure of the fuel injection valve is operated in accordance with the revolving nubmer of an engine, fuel injection amount and fuel injection pressure. CONSTITUTION:The system is equipped with a revolution sensor 23, detecting the revolving number N of the engine, a pressure sensor 24, detecting the fuel injection pressure P of the fuel injection pump, and an injection amount detecting means 200, detecting the fuel injection amount Q of the fuel injection pump. The time T of output, higher than the predetermined thereshold level of the pressure sensor 24, is operated by a time operating means 600 and the actual valve opening pressure P0 of the fuel injection valve is operated in an actual valve opening pressure detecting means 700 from the output time T and said respective data N, Q. An objective valve opening pressure SOLL is operated by an operating means 300 from the revolving number N of the engine and is compared with the actual valve opening pressure P0 in a compar ison means 400. A valve opening pressure regulating means 100 is controlled in accor dance with the result of the comparison through a controlling means 500.
|
