发明授权
US5697342A Hydraulically-actuated fuel injector with direct control needle valve
失效
具有直接控制针阀的液压致动式燃油喷射器
- 专利标题: Hydraulically-actuated fuel injector with direct control needle valve
- 专利标题(中): 具有直接控制针阀的液压致动式燃油喷射器
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申请号: US668552申请日: 1996-06-21
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公开(公告)号: US5697342A公开(公告)日: 1997-12-16
- 发明人: Michael D. Anderson , Dennis H. Gibson , Gregory W. Hefler , Dale C. Maley , Ronald D. Shinogle , Mark F. Sommars
- 申请人: Michael D. Anderson , Dennis H. Gibson , Gregory W. Hefler , Dale C. Maley , Ronald D. Shinogle , Mark F. Sommars
- 申请人地址: IL Peoria
- 专利权人: Caterpillar Inc.
- 当前专利权人: Caterpillar Inc.
- 当前专利权人地址: IL Peoria
- 主分类号: F02M47/00
- IPC分类号: F02M47/00 ; F02G5/00 ; F02M45/04 ; F02M47/02 ; F02M51/06 ; F02M57/02 ; F02M59/10 ; F02M59/36 ; F02M59/46 ; F02M63/00 ; F02M7/00
摘要:
A hydraulically actuated fuel injector includes an injector body having a needle control chamber, a nozzle chamber, and a nozzle outlet that opens to the nozzle chamber. Fuel within the injector is hydraulically pressurized during each injection cycle. A needle valve is positioned to reciprocate in the nozzle chamber between an open position in which the nozzle outlet is open and a closed position in which the nozzle outlet is closed. The needle valve includes a closing hydraulic surface exposed to pressure in the needle control chamber. A needle control valve is mounted within the injector body and is moveable between an off position in which the needle control chamber is opened to a source of high pressure fluid and an on position in which the needle control chamber is opened to a low pressure passage.
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