公开(公告)号：US4757793A

公开(公告)日：1988-07-19

申请号：US4445

申请日：1987-01-20

申请人： Setsuhiro Shimomura ,  Shinji Kojima ,  Megumu Shimizu ,  Katsuhiko Kondo

发明人： Setsuhiro Shimomura ,  Shinji Kojima ,  Megumu Shimizu ,  Katsuhiko Kondo

IPC分类号： F02D41/00 ,  F02D41/04 ,  F02D41/18 ,  F02D41/32 ,  F02D41/34 ,  F02B3/00

CPC分类号： F02D41/187

摘要： A fuel injection control system for an internal combustion engine having means for limiting a fuel amount to be supplied to the engine according to an output of an air flow sensor to a predetermined upper limit value, and means for correcting the intake air flow rate by the output of the air flow sensor when the opening of an intake air throttle valve is opened at a predetermined value, thereby limiting the output of the sensor to the predetermined upper limit value in case that the output of the sensor increases larger than the actual value and correcting the air density if different from a reference by the correcting means.

摘要翻译： 一种用于内燃机的燃料喷射控制系统，具有根据空气流量传感器的输出将供给到发动机的燃料量限制在预定上限值的装置，以及用于将进气流量由 当进气节流阀的打开以预定值打开时，空气流量传感器的输出，从而在传感器的输出增加大于实际值的情况下将传感器的输出限制在预定的上限值，以及 如果与校正装置的参考值不同，则校正空气密度。

公开(公告)号：US5167152A

公开(公告)日：1992-12-01

申请号：US813050

申请日：1991-12-23

申请人： Megumu Shimizu ,  Setsuhiro Shimomura ,  Yukinobu Nishimura

发明人： Megumu Shimizu ,  Setsuhiro Shimomura ,  Yukinobu Nishimura

IPC分类号： F02D41/18 ,  G01F1/696

CPC分类号： F02D41/187 ,  G01F1/696

摘要： An input processing circuit for an air flow sensor comprising a differential amplifier connected through two lines to an air flow sensor and having an operational amplifier an output signal from the air flow sensor and sends a result of this processing to an analogue value - digital value conversion integrated circuit. An output signal from the air flow sensor is supplied to the differential amplifier through a filter circuit so as to prevent an occurrence of error in measuring the amount of sucked air for an internal combustion engine due to various noises. A connection of an inverting input terminal end of the differential amplifier to a ground through a resistor prevents an error caused by a breakage of a reference voltage line connected between the air flow sensor and the input processing circuit. A differential input amplifier circuit also prevents an error caused by a variation in potential resulting from consumption current of an air flow sensor or the like from being generated.

摘要翻译： 一种用于空气流量传感器的输入处理电路，包括通过两条线连接到空气流量传感器的差分放大器，并具有运算放大器来自空气流量传感器的输出信号，并将该处理的结果发送到模拟值 - 数字值转换 集成电路。 来自空气流量传感器的输出信号通过滤波电路被提供给差分放大器，以防止由于各种噪声而测量内燃机的吸入空气量的误差。 通过电阻将差分放大器的反相输入端与接地之间的连接，可防止连接在空气流量传感器与输入处理电路之间的基准电压线的断线引起的误差。 差分输入放大器电路还防止由空气流量传感器等的消耗电流产生的电位变化引起的误差产生。