公开(公告)号：US4737086A

公开(公告)日：1988-04-12

申请号：US862485

申请日：1986-05-12

Applicant: Susumu Yamaguchi ,  Hiroshi Ishiwata ,  Noriyuki Abe ,  Hiroshi Tai ,  Hisashi Nakamura

Inventor： Susumu Yamaguchi ,  Hiroshi Ishiwata ,  Noriyuki Abe ,  Hiroshi Tai ,  Hisashi Nakamura

IPC: F02M59/24 ,  F04B7/04 ,  F02M37/04 ,  F02M59/20

CPC classification number: F02M59/246 ,  F02M59/24 ,  F02M59/243

Abstract: A fuel injection pump includes a reciprocating plunger and a control sleeve slidably fitted over the plunger, the prestroke of which is varied by vertical movement of the control sleeve. The control sleeve is provided at its upper end with a fuel discharge groove, through which the fuel contained in a fuel-pressurizing chamber is discharged after the end of injection. The control sleeve also has to pressure escape passage. A variation in the effective stroke allows the pressure of fuel contained in the fuel-pressurizing chamber to be selectively regulated by the pressure escape passage, thereby controlling the pressure of fuel to be injected.

Abstract translation: 燃料喷射泵包括往复式柱塞和可滑动地装配在柱塞上的控制套筒，其预压力由控制套筒的垂直运动而变化。 控制套筒的上端设置有燃料排出槽，燃料加压室中所含的燃料在喷射结束后被排出。 控制套还必须有压力逃逸通道。 有效行程的变化允许包含在燃料加压室中的燃料的压力由压力逸出通道选择性地调节，从而控制要喷射的燃料的压力。