公开(公告)号：US4676214A

公开(公告)日：1987-06-30

申请号：US707472

申请日：1985-03-01

申请人： Masaaki Kato ,  Hiroyuki Kano ,  Toshihiko Ohmori

发明人： Masaaki Kato ,  Hiroyuki Kano ,  Toshihiko Ohmori

IPC分类号： F02B3/06 ,  F02B75/02 ,  F02D1/02 ,  F02D41/00 ,  F02D41/36 ,  F02D41/40 ,  F02M59/20 ,  F02M59/32 ,  F02M39/00

CPC分类号： F02M59/32 ,  F02D41/0087 ,  F02D41/408 ,  F02M59/205 ,  F02B2075/027 ,  F02B3/06 ,  Y02T10/44

摘要： A fuel injection control apparatus for use in an engine wherein fuel injection is controlled in accordance with the conditions of the engines operation. This apparatus is provided with a fuel quantity control unit of the distribution type which measures and discharges an amount of fuel in response to detection signals which represent the conditions of the engines operation, and with a plurality of unit injectors for distributing and supplying fuel to their respective engine cylinders, said fuel being set and measured by the fuel quantity control unit. Each of said unit injectors comprises a compression plunger driven by a cam system which is rotated by a rotation shaft of said engine, a compression pump chamber whose fuel pressure is set by the operation of said compression plunger, an injection plunger driven by the fuel pressure in the compression pump chamber, an injection pump chamber which is filled with fuel whose pressure has been set by the operation of said injection plunger and whose amount has been adjusted by the fuel amount adjuster means, and a timing plunger whose position is set by the amount of fuel adjusted, wherein the fuel pressure in the compression pump chamber caused when the compression plunger is driven causes the timing plunger to move to a specified position and then acts on the injection plunger to raise the pressure in the injection pump chamber, thereby enabling the quantity-adjusted fuel in the injection pump chamber to be injected.

摘要翻译： 一种用于发动机的燃料喷射控制装置，其中根据发动机操作的条件控制燃料喷射。 该装置设置有分配型的燃料量控制单元，其响应于表示发动机运转的条件的检测信号而测量和排出燃料量，并且具有多个单元喷射器，用于向其分配和供应燃料 相应的发动机气缸，所述燃料由燃料量控制单元设定和测量。 每个所述单元喷射器包括由凸轮系统驱动的压缩柱塞，所述凸轮系统由所述发动机的旋转轴旋转;压缩泵室，其燃料压力由所述压缩柱塞的操作设定，由燃料压力驱动的喷射柱塞 在压缩泵室中，注入泵室，其填充有通过所述注射柱塞的操作设定的压力并且其量已经由燃料量调节器装置调节的燃料，以及定时柱塞，其位置由 调节燃料量，其中当压缩柱塞被驱动时引起的压缩泵室中的燃料压力使得定时柱塞移动到指定位置，然后作用在喷射柱塞上以升高喷射泵室中的压力，从而使能 注射泵室中的量调节燃料。