公开(公告)号：WO2004007934A1

公开(公告)日：2004-01-22

申请号：PCT/GB2003/003015

申请日：2003-07-11

Applicant: DELPHI TECHNOLOGIES, INC. ,  HARCOMBE, Anthony, Thomas ,  DODDS Andrew

Inventor： HARCOMBE, Anthony, Thomas ,  DODDS Andrew

IPC: F02D41/40

CPC classification number: F02D41/401 ,  F02M45/02 ,  F02M47/027 ,  F02M57/02 ,  F02M59/366 ,  Y02T10/44

Abstract: A control method for a fuel injection system having a spill valve (20), a nozzle control valve (22) and a valve needle (12) which is engageable with a seating to control fuel injection, wherein the method comprises applying a first drive current signal (30) to the spill valve (22) to move the spill valve (22) into a closed state and applying a second drive current signal (40) to the nozzle control valve (22) to move the nozzle control valve (22) to an open state, thereby to lift the valve needle (12) from the seating to initiate a main injection of fuel. The first drive current signal (30) is modified so as to move the spill valve (20) to an open state during “a spill valve opening period” during which the second drive current signal (40) is modified to move the nozzle control valve (22) from the open state to a closed state. As a result the valve needle (12) is seated to terminate the main injection of fuel.

Abstract translation: 一种用于具有溢流阀（20），喷嘴控制阀（22）和阀针（12）的燃料喷射系统的控制方法，所述喷嘴控制阀（22）和阀针（12）可与所述座部接合以控制燃料喷射，其中所述方法包括施加第一驱动电流 信号（30）到溢流阀（22）以将溢流阀（22）移动到关闭状态，并将第二驱动电流信号（40）施加到喷嘴控制阀（22）以移动喷嘴控制阀（22） 到打开状态，从而将阀针（12）从座椅上抬起以开始主要的燃料喷射。 第一驱动电流信号（30）被修改为在“溢出阀打开期间”期间使溢流阀（20）移动到打开状态，在该期间，第二驱动电流信号（40）被修改以使喷嘴控制阀 （22）从打开状态到关闭状态。 结果，阀针（12）就位，以终止燃油的主喷射。