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1. 发明公开

EP0859148A3 Fuel injection pump 失效
标题翻译：燃油喷射泵
公开(公告)号：EP0859148A3
公开(公告)日：1999-07-21
申请号：EP98102430.0
申请日：1998-02-12
申请人： ZEXEL CORPORATION
发明人： Ohishi, Takashi, c/o Zexel Corporation , Noda, Toshihumi, c/o Zexel Corporation , Yokota, Tohru, c/o Zexel Corporation , Kitahara, Nobuhiro, c/o Zexel Corporation
IPC分类号： F02M45/06
CPC分类号： F02M45/02 , F02M45/063 , F02M59/102 , F02M59/24 , F02M59/38
摘要： An objective of the present invention is to provide a fuel injection pump wherewith, in addition to main injection, pre-injection is made possible in the vicinity of top dead center in the exhaust stroke, and wherewith, by regulating the pre-stroke, defined as the stroke from bottom dead center of a plunger 2 to the commencement of fuel line pressurization, it is possible to freely control both the pre-injection volume and the pre-injection timing relative to the main injection. Attention having been given to the combining of a pre-stroke varying mechanism together with a two-stage injection mechanism, the present invention is a fuel injection pump that is made so that a pre-stroke is regulated by changing the relative positions, in the axial direction, of a plunger 2 that sends fuel under pressure and a control sleeve 3 that fits around the outside of the plunger 2 so as to slide freely thereon. The cam 4 that drives the plunger 2 comprises a main cam nose 20 for main injection use and a pre cam nose 21 for pre-injection use.
摘要翻译：本发明的目的是提供一种燃料喷射泵，其除了主喷射之外还可以在排气冲程中的上止点附近进行预喷射，并且通过调节预冲程来限定作为从柱塞2的下止点开始到燃料管线加压开始的行程，能够自由地控制相对于主喷射的预喷射量和预喷射时间。已经注意到预行程变化机构与两级喷射机构的组合，本发明是一种燃料喷射泵，其被制成为通过改变相对位置来调节预行程，在在压力下输送燃料的柱塞2的轴向方向，以及配合在柱塞2的外侧以便在其上自由滑动的控制套筒3。驱动柱塞2的凸轮4包括用于主喷射用的主凸轮头20和用于预喷射用的预凸轮头21。

2. 发明公开

EP0859148A2 Fuel injection pump 失效
标题翻译： Kraftstoffeinspritpumpe
公开(公告)号：EP0859148A2
公开(公告)日：1998-08-19
申请号：EP98102430.0
申请日：1998-02-12
申请人： ZEXEL CORPORATION
发明人： Ohishi, Takashi, c/o Zexel Corporation , Noda, Toshihumi, c/o Zexel Corporation , Yokota, Tohru, c/o Zexel Corporation , Kitahara, Nobuhiro, c/o Zexel Corporation
IPC分类号： F02M45/06
CPC分类号： F02M45/02 , F02M45/063 , F02M59/102 , F02M59/24 , F02M59/38
摘要： An objective of the present invention is to provide a fuel injection pump wherewith, in addition to main injection, pre-injection is made possible in the vicinity of top dead center in the exhaust stroke, and wherewith, by regulating the pre-stroke, defined as the stroke from bottom dead center of a plunger 2 to the commencement of fuel line pressurization, it is possible to freely control both the pre-injection volume and the pre-injection timing relative to the main injection.
Attention having been given to the combining of a pre-stroke varying mechanism together with a two-stage injection mechanism, the present invention is a fuel injection pump that is made so that a pre-stroke is regulated by changing the relative positions, in the axial direction, of a plunger 2 that sends fuel under pressure and a control sleeve 3 that fits around the outside of the plunger 2 so as to slide freely thereon. The cam 4 that drives the plunger 2 comprises a main cam nose 20 for main injection use and a pre cam nose 21 for pre-injection use.
摘要翻译：本发明的目的是提供一种燃料喷射泵，除了主喷射之外，在排气冲程中的上止点附近也可以进行预喷射，并且通过调节前冲程，定义作为从柱塞2的下止点到燃料管路加压开始的冲程，可以相对于主喷射自由地控制预喷射量和预喷射正时。本发明提供了一种将前冲程变更机构与两级注入机构组合在一起的注意事项，其特征在于，是通过改变相对位置来调节前冲程的燃料喷射泵，在压力下发送燃料的柱塞2以及围绕柱塞2的外部配合以便在其上自由滑动的控制套筒3的轴向方向。驱动柱塞2的凸轮4包括用于主要注射用途的主凸轮鼻20和用于预注射使用的预凸轮鼻21。

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