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1. 发明公开

EP0416460A2 High pressure unit fuel injector with timing chamber pressure control 失效
标题翻译：高压燃料喷射单元与所述腔室的喷射时间点的压力的控制。
公开(公告)号：EP0416460A2
公开(公告)日：1991-03-13
申请号：EP90116619.9
申请日：1990-08-30
申请人： CUMMINS ENGINE COMPANY, INC.
发明人： Warlick, Timothy A. , Campbell, Jeffrey L. , Peters, Lester L. , Lucas, Michael E. , Perr, Julius P. , Wan, Kuang-Wen Thomas
IPC分类号： F02M57/02
CPC分类号： F02M57/021 , F02M57/023 , F02M57/024 , F02M59/30
摘要： A fuel injector (10) includes an injector housing (16) having a plunger assembly (20) disposed within a central axial bore (18) and including a lower plunger (22), an intermediate plunger (24), and an upper plunger (26). The lower plunger (22) reciprocates within the central bore (18) to meter a variable quantity of fuel during downward portions of the reciprocating motion. A timing spring (56) is wound around the upper portion of the lower plunger (22) to bias the lower plunger (22) upwardly. A timing chamber formed between the upper and the intermediate plungers (26,24) receives timing fluid to create a hydraulic link between the plungers. Timing fluid exits the timing chamber through a central passage (38), which may have a reduced area regulating orifice, formed through the intermediate plunger (24), which is ordinarily closed by a valve mechanism (40). The valve mechanism (40) is acted upon in part by the timing spring (56). To improve the pressure regulation using a higher spring load and to accommodate a larger area drainage passage (38), a valve spring (60) biases closed the passage (38). The force provided by the valve spring (60) is predetermined to open the valve mechanism (40) and drain timing fluid when the timing fluid pressure exceeds the maximum pressure during injection. After injection is completed, timing fluid exits from the timing chamber either through the central passage (38) or through a spillport which is closable by the nonbeveled lower portion of the upper plunger (26).
摘要翻译：一种燃料喷射器（10）包括在具有活塞组件（20）的中心轴向孔（18）内设置喷射器壳体（16），并且包括下部柱塞（22）到中间柱塞（24）和在上柱塞（ 26）。下柱塞（22）中往复运动的向下部分的中心孔（18），以米内往复运动的燃料的变化量。定时弹簧（56）的下部柱塞（22）偏压下柱塞（22）向上的上部缠绕。上部和中间活塞（26,24）之间形成的定时腔室接收流体的定时来创建柱塞之间的液压联系。定时流体离开通过中央通道（38）的定时腔室，其可具有减小的面积调节孔口，通过中间柱塞（24），其通常由一个阀机构（40）封闭而形成。阀机构（40）在由所述定时弹簧（56）的部分作用时。使用较高的弹簧载荷提高压力调节和适应较大区域引流通道（38），一个阀弹簧（60）偏压关闭所述通道（38）。由阀弹簧（60）所提供的力是预定的以打开阀机构（40）和漏极定时流体当定时流体压力在注射过程中超过了最大压力。注射完成后，无论是通过中心通道（38）或通过回油孔所有这些是由上柱塞（26）的nonbeveled下部可闭从定时室定时流体出口。

2. 发明公开

EP0416460A3 High pressure unit fuel injector with timing chamber pressure control 失效
标题翻译：高压单元燃油喷射器，带时钟室压力控制
公开(公告)号：EP0416460A3
公开(公告)日：1991-09-25
申请号：EP90116619.9
申请日：1990-08-30
申请人： CUMMINS ENGINE COMPANY, INC.
发明人： Warlick, Timothy A. , Campbell, Jeffrey L. , Peters, Lester L. , Lucas, Michael E. , Perr, Julius P. , Wan, Kuang-Wen Thomas
IPC分类号： F02M57/02
CPC分类号： F02M57/021 , F02M57/023 , F02M57/024 , F02M59/30
摘要： A fuel injector (10) includes an injector housing (16) having a plunger assembly (20) disposed within a central axial bore (18) and including a lower plunger (22), an intermediate plunger (24), and an upper plunger (26). The lower plunger (22) reciprocates within the central bore (18) to meter a variable quantity of fuel during downward portions of the reciprocating motion. A timing spring (56) is wound around the upper portion of the lower plunger (22) to bias the lower plunger (22) upwardly. A timing chamber formed between the upper and the intermediate plungers (26,24) receives timing fluid to create a hydraulic link between the plungers. Timing fluid exits the timing chamber through a central passage (38), which may have a reduced area regulating orifice, formed through the intermediate plunger (24), which is ordinarily closed by a valve mechanism (40). The valve mechanism (40) is acted upon in part by the timing spring (56). To improve the pressure regulation using a higher spring load and to accommodate a larger area drainage passage (38), a valve spring (60) biases closed the passage (38). The force provided by the valve spring (60) is predetermined to open the valve mechanism (40) and drain timing fluid when the timing fluid pressure exceeds the maximum pressure during injection. After injection is completed, timing fluid exits from the timing chamber either through the central passage (38) or through a spillport which is closable by the nonbeveled lower portion of the upper plunger (26).

3. 发明授权

EP0416460B1 High pressure unit fuel injector with timing chamber pressure control 失效
标题翻译：高压燃料喷射单元与所述腔室的喷射时间点的压力的控制。
公开(公告)号：EP0416460B1
公开(公告)日：1994-10-12
申请号：EP90116619.9
申请日：1990-08-30
申请人： CUMMINS ENGINE COMPANY, INC.
发明人： Warlick, Timothy A. , Campbell, Jeffrey L. , Peters, Lester L. , Lucas, Michael E. , Perr, Julius P. , Wan, Kuang-Wen Thomas
IPC分类号： F02M57/02
CPC分类号： F02M57/021 , F02M57/023 , F02M57/024 , F02M59/30

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