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1. 发明申请

US20040016830A1 Fuel injection system for an internal combustion engine 失效
标题翻译：内燃机燃油喷射系统
公开(公告)号：US20040016830A1
公开(公告)日：2004-01-29
申请号：US10420766
申请日：2003-04-23
申请人： Robert Bosch GmbH
发明人： Burkhard Boos , Stefan Kieferle , Matthias Distel , Achim Koehler , Sascha Ambrock
IPC分类号： F02M059/00
CPC分类号： F02D41/3845 , F02D2041/2027 , F02M59/06 , F02M59/08 , F02M59/102 , F02M59/366 , F02M59/466 , F02M63/0225
摘要： The fuel injection system has a high-pressure pump, by which fuel is pumped into a reservoir, with which injectors disposed on cylinders of the engine communicate. A feed pump pumps fuel out of a fuel tank to the high-pressure pump and a fuel metering device triggered by a control unit and disposed between the feed pump and the high-pressure pump controls the fuel quantity delivered to the high-pressure pump. The fuel metering device is formed by a clocking valve, which is opened and closed in pulse-width-modulated fashion by the control unit, and the fuel quantity delivered to the intake side of the high-pressure pump is proportional to the opening duration of the clocking valve.
摘要翻译：燃料喷射系统具有高压泵，通过该高压泵将燃料泵送到储存器中，喷射器配置在发动机的气缸上。进料泵将燃料从燃料箱泵送到高压泵，并且由控制单元触发并设置在进料泵和高压泵之间的燃料计量装置控制输送到高压泵的燃料量。燃料计量装置由控制单元以脉冲宽度调制的方式打开和关闭的计时阀形成，并且输送到高压泵的进气侧的燃料量与打开持续时间成正比时钟阀。

2. 发明申请

US20030111052A1 Fuel injection system for an internal combustion engine 失效
标题翻译：内燃机燃油喷射系统
公开(公告)号：US20030111052A1
公开(公告)日：2003-06-19
申请号：US10291609
申请日：2002-11-12
申请人： Robert Bosch GmbH
发明人： Peter Schueler , Werner Bruehmann , Kurt Frank , Stefan Kieferle
IPC分类号： F02M001/00
CPC分类号： F02M55/00 , F02M53/00 , F02M63/0225 , F02M2200/40
摘要： A fuel injection system having a prefeed pump, through which fuel from a fuel supply container is pumped to a high-pressure pump, and by means of the high-pressure pump, fuel is pumped into a reservoir. Communicating with the reservoir is at least one injector, through which fuel is injected to the engine. A fuel filter is disposed between the prefeed pump and the high-pressure pump. A return line for uninjected fuel leads back from at least one injector into a region upstream of the high-pressure pump. A valve is provided, by which the return line, in a first switching position, at a low fuel temperature, leads to upstream of the fuel filter, between it and the prefeed pump, and by which the return line, in a second switching position, at a high fuel temperature, leads to downstream of the fuel filter, between it and the high-pressure pump.
摘要翻译：具有预供给泵的燃料喷射系统通过燃料供给容器将燃料泵送到高压泵，并且通过高压泵将燃料泵送到储存器中。与储存器通信是至少一个喷射器，通过该喷射器将燃料喷射到发动机。燃料过滤器设置在预送泵和高压泵之间。未注射燃料的返回管线从至少一个喷射器引回到高压泵上游的区域。提供了一种阀，在第一切换位置，返回管路处于低燃料温度，导致燃料过滤器在其与预制泵之间的上游，并且在第二切换位置在高燃料温度下，导致燃料过滤器在其与高压泵之间的下游。

3. 发明申请

US20030213471A1 Fuel injection system for an internal combustion engine 有权
标题翻译：内燃机燃油喷射系统
公开(公告)号：US20030213471A1
公开(公告)日：2003-11-20
申请号：US10420765
申请日：2003-04-23
申请人： Robert Bosch GmbH
发明人： Stefan Kieferle , Achim Koehler , Sascha Ambrock
IPC分类号： F02M001/00
CPC分类号： F02M59/464 , F02M63/0225
摘要： The fuel injection system has a high-pressure pump which pumps fuel into a reservoir to be supplied to injectors disposed at the engine cylinders. A feed pump supplies fuel to the high-pressure pump. The high-pressure pump has at least one pump element including a pump piston that defines a work chamber and is driven in a reciprocating motion; the work chamber has a communication with the compression side of the feed pump, in which an intake valve opening toward the work chamber is disposed, and through which valve fuel flows into the work chamber upon the intake stroke of the pump piston. The intake valve has a valve member, which is urged in a closing direction by a closing spring, and the closing spring is braced at least indirectly on the pump piston; with an increasing intake stroke of the pump piston, the closing force exerted on the valve member by the closing spring becomes less. A minimal opening differential pressure of the intake valve is less than 0.9 bar.
摘要翻译：燃料喷射系统具有高压泵，其将燃料泵送到储存器中以供应到设置在发动机气缸处的喷射器。进料泵为高压泵提供燃料。高压泵具有至少一个泵元件，其包括限定工作室并且以往复运动驱动的泵活塞; 工作室与供给泵的压缩侧连通，其中设置有朝向工作室的进气门开口，并且在泵活塞的进气冲程时阀燃料通过该进气阀流入工作室。进气阀具有阀构件，其通过关闭弹簧沿关闭方向被推动，并且闭合弹簧至少间接地支撑在泵活塞上; 随着泵活塞的进气行程的增加，由闭合弹簧施加在阀构件上的关闭力变小。进气阀的最小开启压差小于0.9巴。

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