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1. 发明授权

US5044890A Fuel injection pump for internal combustion engines 失效
标题翻译：内燃机燃油喷射泵
公开(公告)号：US5044890A
公开(公告)日：1991-09-03
申请号：US544561
申请日：1990-06-27
申请人： Alf Loeffler , Wolfgang Fehlmann , Eberhard Fiedler , Wolfgang Geiger , Helmut Laufer
发明人： Alf Loeffler , Wolfgang Fehlmann , Eberhard Fiedler , Wolfgang Geiger , Helmut Laufer
IPC分类号： F02B3/06 , F02D1/08 , F02D11/10 , F02M41/12 , F02M59/44
CPC分类号： F02M59/44 , F02D1/08 , F02M41/123 , F02B3/06
摘要： A fuel injection pump for internal combustion engines that has a pump interior and a final control element chamber, separated from it, the latter having an electric final control element for actuating a quantity adjusting device that determines a fuel injection quantity, parts of the final control element from which a control variable for the injection quantity is derived and which thereby serves as a material measure, are to be protected from the influence of fuel. By means of a jet pump through which a permanent propulsive flow flows and which is part of a flow conduit, the static pressure at the intake bore of the jet pump that communicates with the final control element chamber is lowered, and this negative pressure is utilized for evacuating the fuel entering the final control element chamber in the form of a leakage flow along the bearing of a control shaft. This arrangement is particularly suitable for high-pressure injection in Diesel engines, to attain highly accurate fuel metering that is stable over a long period of time.
摘要翻译：一种用于内燃机的燃料喷射泵，其具有与其分离的泵内部和最终控制元件室，后者具有用于确定燃料喷射量的电动最终控制元件，用于确定燃料喷射量的部分，导出喷射量的控制变量并因此用作材料测量的元件将被保护免受燃料的影响。通过喷射泵，永久性推进流动通过该喷射泵流动并且是流动管道的一部分，与最终控制元件室连通的喷射泵进气孔处的静压力降低，并且利用该负压用于以沿着控制轴的轴承的泄漏流的形式排出进入最终控制元件室的燃料。这种布置特别适用于柴油发动机的高压喷射，以获得在长时间内稳定的高精度燃油计量。

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