Control method of high pressure discharge time of fuel of fuel injection pump and fuel injection pump for implementing the control method

摘要

In order to reduce the running noise of a diesel combustion engine expensive pump designs have in the past been proposed which were aimed at reducing the duration of fuel injection in the idling range of the internal combustion engine. By shifting the fuel injection delivery to the final part of the lift of the cam driving the piston of the fuel injection pump for idling operation by means of an injection start adjustment device in combination with an injection duration determined via the closing phase of an electrically controlled valve relieving the pump working chamber, a gentle combustion sequence can be easily obtained in idling operation, particularly on distributor-type fuel- injection pumps, without affecting the basic design of the fuel injection pump. …IMAGE…