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公开(公告)号：EP1456525A1
公开(公告)日：2004-09-15
申请号：EP02805245.4
申请日：2002-11-12
申请人： ROBERT BOSCH GMBH
CPC分类号： F02M47/027 , F02M57/02 , F02M61/16 , F02M2200/16 , F02M2200/28
摘要： The invention relates to a fuel injection device which is provided, for every cylinder of the internal combustion engine, with a high-pressure fuel pump (10) and with a fuel injection valve (12) linked therewith. A pump piston (18) of the high-pressure fuel pump (10) delimits a pump working compartment (22) that is linked with a pressure compartment (40) of the fuel injection valve (12). Said fuel injection valve has an injection valve member (28) that controls injection openings (32) and that is displaced in an opening direction (29) against a closing force by the pressure prevailing in the pressure compartment (40). A control valve (80) controls the link (74) of a control pressure compartment (62), linked with the pump working compartment (22) and limited by a control piston (60), with a discharge compartment (24) in which a throttle element (75) is provided. The control piston (60) controls an effective area of flow of the link (74) of the control pressure compartment (62) to the discharge compartment (24) in accordance with the stroke of the control piston (60) in such a manner that, as the opening stroke of the injection valve member (28) increases, the control piston (60) releases a smaller effective area of flow. At a maximum opening stroke of the injection valve member (28), the released effective area of flow is smaller than the effective area of flow of the second throttle element (75).
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公开(公告)号：EP1466087A1
公开(公告)日：2004-10-13
申请号：EP02779159.9
申请日：2002-10-15
申请人： ROBERT BOSCH GMBH
IPC分类号： F02M63/00
CPC分类号： F02M63/0007 , F02M55/00 , F02M55/002 , F02M61/205 , F02M63/0003 , F02M63/0005 , F02M63/0029 , F02M2200/304 , F02M2200/315
摘要： The invention relates to an injector for high pressure injection of fuel in auto-igniting internal combustion engines. The injector comprises an actuator valve for opening and closing the injector, an injector needle (17) which seals at least one injection opening (18) when the injector is in a closed state, a metering valve (4) producing a hydraulic connection between the actuator valve and the discharge area (6) of the injector, a pressure maintenance device (33) which is used to maintain the pressure required for the metering valve (4), a first line (20) for control amounts (34) flowing via the actuator valve and a second line (43) for control amounts flowing via the metering valve (4). The pressure maintenance device (33) dynamically separates the control amounts (35) from the metering valve from the control amounts (34) from the actuator valve by means of a hydraulic vibration damper.
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公开(公告)号：EP1466087B1
公开(公告)日：2007-02-07
申请号：EP02779159.9
申请日：2002-10-15
申请人： ROBERT BOSCH GMBH
IPC分类号： F02M63/00
CPC分类号： F02M63/0007 , F02M55/00 , F02M55/002 , F02M61/205 , F02M63/0003 , F02M63/0005 , F02M63/0029 , F02M2200/304 , F02M2200/315
摘要： The invention relates to an injector for high pressure injection of fuel in auto-igniting internal combustion engines. The injector comprises an actuator valve for opening and closing the injector, an injector needle (17) which seals at least one injection opening (18) when the injector is in a closed state, a metering valve (4) producing a hydraulic connection between the actuator valve and the discharge area (6) of the injector, a pressure maintenance device (33) which is used to maintain the pressure required for the metering valve (4), a first line (20) for control amounts (34) flowing via the actuator valve and a second line (43) for control amounts flowing via the metering valve (4). The pressure maintenance device (33) dynamically separates the control amounts (35) from the metering valve from the control amounts (34) from the actuator valve by means of a hydraulic vibration damper.
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4.发明授权KRAFTSTOFFEINSPRITZEINRICHTUNG FÜR EINE BRENNKRAFTMASCHINE 有权KRAFTSTOFFEINSPRITZEINRICHTUNGFÜREINE BRENNKRAFTMASCHINE
公开(公告)号：EP1456525B1
公开(公告)日：2005-11-16
申请号：EP02805245.4
申请日：2002-11-12
申请人： ROBERT BOSCH GMBH
CPC分类号： F02M47/027 , F02M57/02 , F02M61/16 , F02M2200/16 , F02M2200/28
摘要： The invention relates to a fuel injection device which is provided, for every cylinder of the internal combustion engine, with a high-pressure fuel pump (10) and with a fuel injection valve (12) linked therewith. A pump piston (18) of the high-pressure fuel pump (10) delimits a pump working compartment (22) that is linked with a pressure compartment (40) of the fuel injection valve (12). Said fuel injection valve has an injection valve member (28) that controls injection openings (32) and that is displaced in an opening direction (29) against a closing force by the pressure prevailing in the pressure compartment (40). A control valve (80) controls the link (74) of a control pressure compartment (62), linked with the pump working compartment (22) and limited by a control piston (60), with a discharge compartment (24) in which a throttle element (75) is provided. The control piston (60) controls an effective area of flow of the link (74) of the control pressure compartment (62) to the discharge compartment (24) in accordance with the stroke of the control piston (60) in such a manner that, as the opening stroke of the injection valve member (28) increases, the control piston (60) releases a smaller effective area of flow. At a maximum opening stroke of the injection valve member (28), the released effective area of flow is smaller than the effective area of flow of the second throttle element (75).
摘要翻译： 燃料喷射装置技术领域本发明涉及一种燃料喷射装置，其为内燃机的每个气缸提供高压燃料泵（10）和与之连接的燃料喷射阀（12）。 高压燃料泵（10）的泵活塞（18）界定与燃料喷射阀（12）的压力室（40）连接的泵工作室（22）。 所述燃料喷射阀具有喷射阀构件（28），该喷射阀构件控制喷射开口（32）并且通过压力室（40）中存在的压力克服闭合力沿打开方向（29）移动。 控制阀（80）控制与泵工作室（22）连接并由控制活塞（60）限制的控制压力室（62）的连接部（74），其具有排出室（24） 节流元件（75）。 控制活塞（60）根据控制活塞（60）的冲程以如下方式控制控制压力室（62）的连接件（74）向排出室（24）的有效流动面积： 随着喷射阀元件（28）的开启行程增加，控制活塞（60）释放较小的有效流动面积。 在喷射阀构件（28）的最大打开行程处，释放的有效流动面积小于第二节流元件（75）的有效流动面积。
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