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1. 发明授权

EP2071167B1 High-pressure fuel supply apparatus and control apparatus for internal combustion engine 有权
标题翻译：高压燃料装置和控制装置，用于内燃机
公开(公告)号：EP2071167B1
公开(公告)日：2012-08-01
申请号：EP08021466.1
申请日：2008-12-10
申请人： Hitachi Ltd.
发明人： Okamoto, Takashi , Tsukada, Shinsaku , Ehara, Hideharu , Toyohara, Masahiro
IPC分类号： F02D41/22 , F02D41/38
CPC分类号： F02D41/3836 , F02D41/22 , F02D2041/224 , F02M2200/18

2. 发明公开

EP2085596A2 Fuel injector for internal combustion engine 审中-公开
标题翻译： Kraftstoffeinspritzvorrichtungfüreine Brennkraftmaschine
公开(公告)号：EP2085596A2
公开(公告)日：2009-08-05
申请号：EP09000229.6
申请日：2009-01-09
申请人： Hitachi, Ltd.
发明人： Tsukada, Shinsaku , Ehara, Hideharu , Okamoto, Takashi
IPC分类号： F02D41/38
CPC分类号： F02D41/3863 , F02D41/3845 , F02D2200/0602 , F02D2250/31
摘要： Disclosed herein is a fuel injector for an internal combustion engine, which can achieve the improved responsiveness to the target fuel pressure as well as the improved controllability even when the fuel pressure is greatly decreased.
A fuel injector for an internal combustion engine: a high pressure pump 103 for pressure feeding high pressure fuel of the internal combustion engine; a fuel rail 105 for accumulating the fuel that has been pressure fed by the high pressure pump; an injection valve 106 for injecting, into a cylinder, the fuel accumulated in the fuel rail;
a fuel pressure sensor 104 for detecting the pressure of the fuel that is accumulated in the fuel rail; an electromagnetic relief valve 107 for discharging the pressure accumulated fuel of the fuel rail; and an ECU 110 for controlling opening and closing of the electromagnetic relief valve 107. The ECU 110 repeats the opening and closing of the relief valve to discharge the fuel pressure in stages so that the fuel pressure in the fuel rail is decreased down to the target fuel pressure.
摘要翻译：这里公开了一种用于内燃机的燃料喷射器，其即使当燃料压力大大降低时也能够实现对目标燃料压力的响应性的提高以及改进的可控性。用于内燃机的燃料喷射器：用于对内燃机的高压燃料进行压力供给的高压泵103; 燃料轨道105，用于蓄积由高压泵压力供给的燃料; 用于将累积在燃料轨中的燃料喷射到气缸中的喷射阀106; 燃料压力传感器104，用于检测蓄积在燃料轨道中的燃料的压力; 用于排出燃料轨的压力累积燃料的电磁释放阀107; 以及用于控制电磁释放阀107的打开和关闭的ECU110。ECU110重复安全阀的打开和关闭，以分级地排出燃料压力，使得燃料轨道中的燃料压力降低到目标燃油压力。

3. 发明公开

EP2085596A3 Fuel injector for internal combustion engine 审中-公开
标题翻译：一种用于内燃发动机的燃料喷射装置
公开(公告)号：EP2085596A3
公开(公告)日：2016-03-16
申请号：EP09000229.6
申请日：2009-01-09
申请人： Hitachi, Ltd.
发明人： Tsukada, Shinsaku , Ehara, Hideharu , Okamoto, Takashi
IPC分类号： F02D41/38
CPC分类号： F02D41/3863 , F02D41/3845 , F02D2200/0602 , F02D2250/31
摘要： Disclosed herein is a fuel injector for an internal combustion engine, which can achieve the improved responsiveness to the target fuel pressure as well as the improved controllability even when the fuel pressure is greatly decreased.
A fuel injector for an internal combustion engine: a high pressure pump 103 for pressure feeding high pressure fuel of the internal combustion engine; a fuel rail 105 for accumulating the fuel that has been pressure fed by the high pressure pump; an injection valve 106 for injecting, into a cylinder, the fuel accumulated in the fuel rail;
a fuel pressure sensor 104 for detecting the pressure of the fuel that is accumulated in the fuel rail; an electromagnetic relief valve 107 for discharging the pressure accumulated fuel of the fuel rail; and an ECU 110 for controlling opening and closing of the electromagnetic relief valve 107. The ECU 110 repeats the opening and closing of the relief valve to discharge the fuel pressure in stages so that the fuel pressure in the fuel rail is decreased down to the target fuel pressure.

4. 发明公开

EP2071167A1 High-pressure fuel supply apparatus and control apparatus for internal combustion engine 有权
标题翻译： Hochdruck-Brennstoffvorrichtung und SteuervorrichtungfürVerbrennungsmotoren
公开(公告)号：EP2071167A1
公开(公告)日：2009-06-17
申请号：EP08021466.1
申请日：2008-12-10
申请人： Hitachi Ltd.
发明人： Okamoto, Takashi , Tsukada, Shinsaku , Ehara, Hideharu , Toyohara, Masahiro
IPC分类号： F02D41/22 , F02D41/38
CPC分类号： F02D41/3836 , F02D41/22 , F02D2041/224 , F02M2200/18
摘要： In an internal combustion engine provided with a high-pressure fuel pump (102), if the discharging rate of the high-pressure fuel pump is greater than the injection quantity of fuel injected from a injector (113) with the high-pressure fuel pump remaining uncontrollable due to failure or the like, it is probable that the fuel pressure in a common rail unintentionally rises to affect the injector. A high-pressure fuel supply apparatus is provided to solve such a problem.
A high-pressure fuel supply apparatus according to the present invention is configured such that if the high-pressure fuel supply apparatus or a control apparatus thereof causes malfunction to increase the pressure in the common rail, the pressure in the common rail does not exceed pressure affecting the flow characteristic and spray characteristic of the injector after recovery from the malfunctioning state.
摘要翻译：在设置有高压燃料泵（102）的内燃机中，如果高压燃料泵的排出速度大于从具有高压燃料泵的喷射器（113）喷射的燃料的喷射量由于故障等而不能控制，共轨中的燃料压力很可能无意中升高以影响喷射器。提供高压燃料供给装置来解决这个问题。根据本发明的高压燃料供给装置被构造成如果高压燃料供给装置或其控制装置引起故障以增加共轨中的压力，则共轨中的压力不超过压力在从故障状态恢复之后影响喷射器的流动特性和喷射特性。

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