发明名称 |
Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber |
摘要 |
<p>The present invention relates to a method and apparatus for attenuating fuel pump noise in a direct injection internal combustion engine (22). In one proposal, the direct injection fuel nozzle is suspended from a fuel rail (32) in a fashion that avoids direct metal-to-metal contact between the injector and the engine block (24). The direct injection nozzle may also be connected to the fuel rail (32) by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice (96) may be provided fluidly in series between the fuel pump (36) and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation.
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申请公布号 |
EP2333305(A3) |
申请公布日期 |
2013.07.31 |
申请号 |
EP20110157976 |
申请日期 |
2008.04.02 |
申请人 |
HITACHI LTD. |
发明人 |
WATANABE, ATSUSHI;BADARINARAYAN, HARSHA;BORG, JONATHAN;MCCUNE, DONALD J.;SHIRAISHI, TAKUYA;HOHKITA, ATSUSHI;SOMA, MASAHIRO;SAEKI, HIROAKI |
分类号 |
F02M61/16;F02M55/00;F02M55/02;F02M61/14;F02M69/46 |
主分类号 |
F02M61/16 |
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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