Fuel-injection control apparatus for use in fuel-injection system, has fuel injection valve injecting fuel, and correction part correcting drive pulse signal based on pressure pulsation of control room

摘要

The apparatus has a fuel injection valve injecting a fuel, and a nozzle needle opening and closing an emitting hole. An electromagnetic drive-type pressure regulation part carries out a reciprocation drive of the nozzle needle. A drive control part instructs a reciprocation drive control with respect to the nozzle needle by a drive pulse signal. A correction part corrects the drive pulse signal based on a pressure pulsation of a control room. A pulsation estimation part estimates a pressure pulsation of the control room based on the capacity of the control room.