COMMON RAIL TYPE FUEL INJECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a common rail type fuel injection device capable of realizing excellent driveability by preventing the drive load of a supply pump from being abruptly changed according to the operation and stoppage of a boosting mechanism to suppress torque shock and rotational variation. SOLUTION: Immediately before the operation of the boosting mechanism, the boosting control valves of cylinders are opened at such timings not overlapped with the opening timings of injection control valves. By gradually increasing the valve opening period of the boosting control valves, such an event that the fuel consumption of the boosting mechanism is abruptly increased is prevented when boosting is started. COPYRIGHT: (C)2006,JPO&NCIPI