Fuel injection pressure automatic controller of common rail diesel engine and Fuel injection pressure automatic controlling method thereof

摘要

The present invention is a common rail diesel that auto fuel injection pressure control system of the engine, and relates to an automatic fuel injection pressure control method using the same, more specifically to electronic for controlling the operation state of the fuel pressure sensor and the car for measuring the pressure in the common rail in the common-rail diesel engine with a control unit, to receive the acceleration sensor measuring the acceleration of the vehicle and the signal measured by the acceleration sensor determines whether the acceleration is acceleration applied deceleration has an acceleration control unit for transmitting a signal when deceleration days acceleration sensor unit, and by the acceleration to the signals of the sensor unit increases the pressure signal value of the fuel pressure sensor which measures the fuel pressure in the common rail further comprising: an output control unit that transmits to the electronic control unit, the electronic the control unit according to the deceleration of the car traveling along the Sikkim automatically reducing the fuel injection pressure of the fuel pump by the difference as compared with the fuel signal value of the injection pressure determination map is set based on the increased pressure signal value by the output control unit during acceleration decrease, corresponding to fuel injection pressure decreases, as in real-time to control the fuel pump to this it is possible to improve the fuel economy of the fuel according to the prevent boost. ; Common-rail diesel engine, fuel injection pressure control, acceleration