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    • 1. 发明专利
    • CONTROLLER OF NUMBER OF FUEL SUPPLY CYLINDER
    • JPS5546032A
    • 1980-03-31
    • JP11884778
    • 1978-09-27
    • NISSAN MOTOR
    • MATSUMOTO JIYUNICHIROUIIZUKA HARUHIKOSUGASAWA FUKASHI
    • F02D41/14F02D17/02F02D41/02F02D41/04
    • PURPOSE:To prevent from degradation of an exhaust performance and a loss of fuel cost in switching number of fuel supply cylinders by avoiding a momentary change of the air fuel ratio compensating an output variation excluding a slow speed and a slow deceleration periods which cause a degradation of feeling during driving. CONSTITUTION:A method having a fuel feeding cylinder number control circuit 1 where a cylinder numbers signal is fed so as to allow six cylinders to operate at a medium or high load condition and allow three cylinders to operate at a low load condition, a fuel injection control circuit 2 so as to allow a fuel injection pulse signal to feed to an injection valve #1-#6 respectively, an air fuel ratio control circuit 3 so as to allow the air fuel ratio to feedback control corresponding to the output of an oxygen sensor 4, an air fuel ratio variation circuit 4 so as to allow an engine torque variation caused by changing the number of cylinders to suppress, further, an engine load discrimination circuit, and in corresponding to the output thereof an air fuel ratio variation discontinuing circuit 9 so as to allow the operation of said variation circuit 4 to discontinue in in corresponding to the output thereof.
    • 6. 发明专利
    • Fuel shut-off device
    • 燃油开关装置
    • JPS54148928A
    • 1979-11-21
    • JP5689178
    • 1978-05-12
    • Nissan Motor Co Ltd
    • SUGASAWA FUKASHIIIZUKA HARUHIKOMATSUMOTO JIYUNICHIROU
    • F02D41/34F02D17/02F02D41/00F02D41/02F02D41/12F02D41/36
    • F02D41/0087F02D2250/21
    • PURPOSE: To compensate the control pattern of a fuel cut cylinder in correlation to the reference rotation corresponding thereto when there is any fluctuation related to the load of an engine in fuel cut measures at the time of deceleration.
      CONSTITUTION: When an AND circuit 44 gives output of a comparator 43 and a cooler switch is ON, or when a cooler compressor is driven, signals of a detector 45 give output of "1", the both outputs give "1", an electronic switch 42 is changed over to OFF. In consequence, when the output of the detector is "1", such as when the cooler is worked on, until during deceleration of the engine, the rotation will be a rotation N'5 which is higher than a setpoint N5, an electronic switch 42 remains ON, the fuel feeding cylinder number will increase gradually 1, 2 ..., but the rotation becomes less than N'5 when the output of the comparator 43 gives "1", the electronic switch 42 is put OFF, therefore, outputs of comparators 3W8 becomes all "0", at that time, it will return to six-cylinder drive.
      COPYRIGHT: (C)1979,JPO&Japio
    • 目的:当与减速时的燃料切断措施中的发动机的负荷有关的任何波动时,与相应于其的基准旋转相关地补偿燃油切断气缸的控制模式。 构成:当AND电路44给出比较器43的输出和冷却器开关为ON时,或当驱动较冷的压缩机时,检测器45的信号给出“1”的输出,两个输出给出“1” ',电子开关42切换到OFF。 因此,当检测器的输出为“1”时,例如当冷却器加热时,直到发动机减速,旋转将为高于设定点N5的转动N'5, 电子开关42保持ON,燃料供给缸数将逐渐增加1,2 ...,但当比较器43的输出给出“1”时旋转变得小于N'5,电子开关42被放置 因此,比较器3-8的输出全为“0”,此时将返回到六缸驱动。
    • 10. 发明专利
    • FUEL SHUTTOFF DEVICE
    • JPS5549537A
    • 1980-04-10
    • JP12228878
    • 1978-10-04
    • NISSAN MOTOR
    • IIZUKA HARUHIKOSUGASAWA FUKASHIMATSUMOTO JIYUNICHIROU
    • F02D41/34F02D41/12
    • PURPOSE:To enable the shortening of time length between the release of fuel suht- off and the actual restarting of combustion by separately establishing a means which can immediately re-supply fuel being shut-off at speed deceleration when the number of engine revolution gets below the pre-set value. CONSTITUTION:Outputs signals from an intaken air amount sensor 2, a throttle valve switch 3, rotating speed detecting means 5, a start detecting switch 6 and coolant temperature sensor 7 are applied to a fuel supply control circuit 1, which thereupon produces an injection pulse signal for obtaining suitable fuel injection amount. This pulse signal is applied through injection stopping means 8 for shutting off fuel at decelerating time, an OR gate 9 and amplifier 10 to an electromagnetic fuel injection valve 11. There is provided a monostable multivibrator 14 for producing a fuel injection pulse signal having predetermined pulse duration immediately upon release of the fuel shut-off with a comparator 12 connected through an analog switch 13 to a setting potentiometer 15.