发明名称 |
Gaseous fuel injector using liquid fuel as lubricant and pressure-transmitting medium |
摘要 |
A fuel injector injects high-pressure gaseous fuel directly into a cylinder of an engine. A small amount of liquid fuel is used in the injector to lubricate sliding portions of the fuel injector in addition to utilizing it as a medium for transmitting driving force. The fuel injector includes a nozzle member having injection holes at its elongated end and a needle slidably disposed in an elongated center hole of the nozzle member. The needle is driven by pressure of the liquid fuel introduced into a control chamber to open or close the injection holes. The pressure in the control chamber is controlled by a switching valve which is in turn driven by an actuator such as an electromagnetic or piezoelectric actuator. The liquid fuel is injected together with the high-pressure gaseous fuel after lubricating the sliding portions between the nozzle member and the needle.
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申请公布号 |
US7891579(B2) |
申请公布日期 |
2011.02.22 |
申请号 |
US20080170850 |
申请日期 |
2008.07.10 |
申请人 |
DENSO CORPORATION |
发明人 |
MASHIDA MAKOTO;KUROYANAGI MASATOSHI;KATO MASAAKI;FUNAI KENJI |
分类号 |
F02M41/16 |
主分类号 |
F02M41/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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