Patent ID: 6092509
Filing Date: 2000-07-25
Classification: F02D,F02M,Y02T

Abstract:
An accumulator type fuel injection control system comprising:a first accumulator adapted to store therein a high-pressure fuel pressurized by a fuel pump,a fuel injection nozzle connected to said first accumulator via a fuel passage and adapted to inject the fuel into a combustion chamber of an engine,a control valve adapted to control the discharging of the high-pressure fuel in said first accumulator into a downstream portion of said fuel passage,a second accumulator adapted to store therein a fuel the pressure of which is lower than that of the high-pressure fuel in said first accumulator, anda fuel control device adapted to open said control valve during a period in which said fuel injection nozzle is opened, close said control valve simultaneously with the closure of said fuel injection nozzle, set an indicated pressure of the fuel in said first accumulator in accordance with a subsequent operating condition of said engine, and delay the closing time of said control valve when a rate of decrease of the indicated pressure is not lower than a predetermined level.