公开(公告)号：US4519353A

公开(公告)日：1985-05-28

申请号：US650169

申请日：1984-09-13

申请人： Yoshiyasu Ito ,  Fumiaki Kobayashi ,  Hideo Miyagi

发明人： Yoshiyasu Ito ,  Fumiaki Kobayashi ,  Hideo Miyagi

IPC分类号： F02D41/14 ,  F02B1/04 ,  F02B3/06 ,  F02D41/00 ,  F02D41/22 ,  F02D41/38 ,  F02D41/40 ,  F02D45/00 ,  F02D31/00

CPC分类号： F02D41/22 ,  F02D35/022 ,  F02D35/028 ,  F02D41/38 ,  F02B1/04 ,  F02B3/06 ,  F02D2041/226 ,  F02D41/408

摘要： A fuel injection pump for a diesel engine includes a means for calculating a proper fuel injection amount per each engine stroke and a means for injecting an amount of fuel per each engine stroke approximately equal to this proper fuel injection amount determined by this injection amount calculating means. The pump also includes a means for calculating a reference combustion time which represents approximately how long combustion in an engine stroke should last, and a means for detecting the approximate start and end of combustion in that engine stroke. From this information, these, an appropriate means calculates the approximate actual time of combustion in that engine stroke, and then another means compares the thus calculated approximate actual combustion time and the thus calculated reference combustion time, and based upon the result of said comparison selectively actuates a means for cutting off fuel injection, so as to stop the diesel engine from running and so as thereby to prevent overrunning due to abnormal combustion, if it decides as a result of the comparison that the actual combustion time is too long as compared with the reference combustion time. Optionally, this comparison may consider whether or not the calculated approximate actual combustion time has been greater than the calculated reference combustion time for a specified number of consecutive combustion cycles, and may interrupt engine running if such has been the case.

摘要翻译： 用于柴油发动机的燃料喷射泵包括用于计算每个发动机行程的适当燃料喷射量的装置和用于每个发动机行程喷射燃料量的装置，其大致等于由该喷射量计算装置确定的适当燃料喷射量 。 该泵还包括用于计算参考燃烧时间的装置，该参考燃烧时间大致表示发动机行程中的燃烧持续时间以及在该发动机行程中检测燃烧的近似开始和结束的装置。 根据该信息，这些适当的手段计算该发动机行程中燃烧的近似实际时间，然后另一装置将由此计算出的近似实际燃烧时间与由此计算的参考燃烧时间进行比较，并且基于所述比较结果选择性地 启动切断燃料喷射的装置，以便停止柴油发动机的运转，从而防止由于异常燃烧引起的超速，如果比较结果确定实际燃烧时间太长，与 参考燃烧时间。 可选地，该比较可以考虑计算的近似实际燃烧时间是否大于在指定数量的连续燃烧循环中的计算的参考燃烧时间，并且如果是这种情况，则可以中断发动机运行。