公开(公告)号：US4423485A

公开(公告)日：1983-12-27

申请号：US249866

申请日：1981-04-01

申请人： Hiroshi Sami ,  Osamu Ito ,  Shizuo Kawai ,  Nobuhito Hobo ,  Teruo Nishio

发明人： Hiroshi Sami ,  Osamu Ito ,  Shizuo Kawai ,  Nobuhito Hobo ,  Teruo Nishio

IPC分类号： F02D41/40 ,  F02M41/12 ,  F02M39/00 ,  F02D5/02

CPC分类号： F02D41/408 ,  F02M41/126 ,  Y02T10/44

摘要： An electric control apparatus for a fuel injection pump comprises a fuel flow sensor for detecting the net quantity of fuel supplied to the fuel injection pump, operating condition sensors for detecting operating condition parameters of an engine, a servo device for driving a fuel injection quantity controlling element of the fuel injection pump which controls the fuel injection quantity of the fuel injection pump, and an electric control circuit for receiving detection signals from the fuel flow sensor and the operating condition sensors, computing the actual fuel injection quantity and the desired fuel injection quantity, and determining an error between the computed actual fuel injection quantity and desired fuel injection quantity to drive the fuel injection quantity controlling element of the fuel injection pump through the servo device in accordance with an error representing signal, thereby controlling the actual fuel injection quantity at the desired fuel injection quantity.By ensuring high detection accuracy of the fuel flow sensor, it is possible to accomplish high precision control of the fuel injection quantity without utilizing the position of a moving part of the fuel injection quantity controlling element of the fuel injection pump.

摘要翻译： 一种用于燃料喷射泵的电气控制装置，包括用于检测供给到燃料喷射泵的燃料净量的燃料流量传感器，用于检测发动机的运行状态参数的操作条件传感器，用于驱动燃料喷射量控制的伺服装置 控制燃料喷射泵的燃料喷射量的燃料喷射泵的元件，以及用于接收来自燃料流量传感器和操作状态传感器的检测信号的电气控制电路，计算实际燃料喷射量和期望燃料喷射量 ，并且根据所述误差表示信号，确定计算出的实际燃料喷射量与期望燃料喷射量之间的误差，以通过伺服装置驱动燃料喷射泵的燃料喷射量控制元件，从而将实际燃料喷射量控制在 所需的燃料喷射量。 通过确保燃料流量传感器的高检测精度，可以在不利用燃料喷射泵的燃料喷射量控制元件的移动部分的位置的情况下实现燃料喷射量的高精度控制。

公开(公告)号：US5731514A

公开(公告)日：1998-03-24

申请号：US759216

申请日：1996-12-05

申请人： Makoto Miwa ,  Shigenori Isomura ,  Teruo Nishio

发明人： Makoto Miwa ,  Shigenori Isomura ,  Teruo Nishio

IPC分类号： F02D41/00 ,  F02M25/08 ,  G01M15/00

CPC分类号： F02M25/0809

摘要： An abnormality detecting apparatus for use in a fuel-transpiration preventing mechanism can eliminate effects of changes in operating conditions and variations in equipment to increase the accuracy of abnormality detection. Fuel gas generated in a fuel tank and then absorbed by an absorbing material accommodated in a canister is discharged to an intake pipe by opening and closing a purge control valve. A change in pressure at a negative-pressure holding time after introduction of a negative pressure to the fuel-transpiration preventing mechanism and a change in pressure at an atmosphere-air introduction time after the negative-pressure holding time are calculated and the changes in pressure are used as a basis for determining the existence of an abnormality. As a result, effects of changes in operating conditions and effects of variations in purge control valves and canister closing valves can be eliminated, thus allowing the detection accuracy to be improved.

摘要翻译： 用于燃料蒸发防止机构的异常检测装置可以消除操作条件变化和设备变化的影响，从而提高异常检测的精度。 燃料箱中产生的燃料气体，然后通过容纳在罐中的吸收材料吸收，通过打开和关闭净化控制阀而被排出到进气管中。 计算出在负压保持时间之后的负压保持时间后的负压压力变化和负压保持时间后的气氛导入时间的压力变化，压力变化 被用作确定异常的存在的基础。 结果，可以消除操作条件的改变和清洗控制阀和罐关闭阀的变化的影响，从而可以提高检测精度。