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21. 发明授权

US4394963A Fuel injection nozzle 失效
标题翻译：燃油喷嘴
公开(公告)号：US4394963A
公开(公告)日：1983-07-26
申请号：US299129
申请日：1981-09-03
申请人： Masatoshi Iwata
发明人： Masatoshi Iwata
IPC分类号： F02B3/06 , F02M57/02 , F02M67/02 , F02M61/08
CPC分类号： F02M67/02 , F02M57/02 , F02B3/06
摘要： A nozzle is disclosed for the air injection of fuel into the combustion chamber of a diesel engine cylinder. The nozzle includes a piston reciprocably mounted in the nozzle body to define therein a premixing chamber to be placed in and out of communication with the combustion chamber via spray holes at the tip of the nozzle body. Slidably fitted at one end in an axial bore in the piston, a needle valve is sprung to normally close the spray holes with its other end. Toward the end of the compression stroke of the piston, the mixture of fuel and air trapped in the premixing chamber acts on the needle valve to cause same to open the spray holes against the bias of the spring and thus is injected into the combustion chamber. The spring serves to cause the needle valve to firmly close the spray holes immediately upon full injection of the fuel-air mixture.
摘要翻译：公开了一种用于将燃料空气喷射到柴油发动机气缸的燃烧室中的喷嘴。喷嘴包括可往复运动地安装在喷嘴主体中的活塞，以在其中限定预混合室，该预混合室通过在喷嘴体的尖端处的喷射孔与燃烧室放置和脱离连通。在活塞的轴向孔中的一端可滑动地安装有一个针阀，以使其与另一端正常关闭喷雾孔。在活塞的压缩冲程结束时，捕集在预混合室中的燃料和空气的混合物作用在针阀上，以使其相对于弹簧的偏压打开喷射孔，并因此被喷射到燃烧室中。弹簧用于在全燃料 - 空气混合物完全注入时立即使针阀牢固地关闭喷孔。

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