发明名称 FUEL INJECTOR
摘要 A direct injection fuel injector (10) and method of operation wherein high fuel pressure exerting an opening force on an injection valve (76, 78) is slightly overbalanced by a return spring (82) tending to close the valve. A first solenoid (62) acts to open the valve against the excess return spring force and a second solenoid (50) acts to close the valve when the first solenoid is de-energized. Rapid valve closing is provided by energizing the second solenoid (50) before de-energizing the first solenoid (62), the force of the second solenoid when the valve is open being insufficient to overcome the force of the first solenoid holding the valve open. Thus, the second solenoid magnetic force is fully developed and quickly closes the injection valve when the first solenoid is de-energized. Various additional features are disclosed.
申请公布号 WO9949210(A1) 申请公布日期 1999.09.30
申请号 WO1999US03619 申请日期 1999.02.19
申请人 GENERAL MOTORS CORPORATION 发明人 VARBLE, DANIEL, LEE;SALEMI, MICHAEL, RAYMOND;MIENEY, HARRY, RICHARD;XU, MIN;KAZOUR, YOUSSEF
分类号 F02B75/12;F02M51/00;F02M51/06;F02M61/06;F02M61/08;F02M61/16;F16K31/06;(IPC1-7):F02M61/08 主分类号 F02B75/12
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