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    • 1. 发明授权
    • Air-fuel ratio control system for engine
    • 发动机空燃料无线电控制系统
    • US4763629A
    • 1988-08-16
    • US14266
    • 1987-02-12
    • Katsumi OkazakiKatsuhiko YokookuTomomi WatanabeTadataka NakazumiKiyotaka Mamiya
    • Katsumi OkazakiKatsuhiko YokookuTomomi WatanabeTadataka NakazumiKiyotaka Mamiya
    • F02D41/14F02D41/18F02M17/00
    • F02D41/1486F02D41/1479F02D41/182F02D41/1456
    • An air-fuel ratio control system for an engine in which a fuel injection amount is calculated according to the engine operating conditions and is corrected according to the output of an air-fuel ratio sensor, comprises a base fuel injection amount calculating section for calculating a base fuel injection amount corresponding to the stoichiometric air-fuel ratio on the basis of the intake air amount, a target air-fuel ratio calculating section for calculating a target air-fuel ratio according to the engine operating condition, a reference value calculating section for calculating a reference value which represents the target air-fuel ratio and is submitted to comparison with the output of the air-fuel ratio sensor, a feedback correction coefficient calculating section for calculating a feedback coefficient according to the deviation of the output of the air-fuel ratio sensor from the reference value, and a final fuel injection amount calculating section which corrects the base fuel-injection amount on the basis of the ratio of the stoichiometric air-fuel ratio to the target air-fuel ratio and the feedback coefficient to obtain a final fuel injection amount.
    • 一种用于发动机的空燃比控制系统,其中根据发动机运行条件计算燃料喷射量并根据空燃比传感器的输出进行校正,包括:基本燃料喷射量计算部, 基于进气量的与理论空燃比对应的基准燃料喷射量,根据发动机运转状态计算目标空燃比的目标空燃比计算部,基准值计算部, 计算表示目标空燃比的基准值,并与空燃比传感器的输出进行比较;反馈修正系数计算部,其根据空燃比传感器的输出的偏差来计算反馈系数; 燃料比传感器和基准燃料喷射量的最终燃料喷射量计算部 基于化学计量空燃比与目标空燃比的比率和反馈系数,以获得最终燃料喷射量。
    • 3. 发明授权
    • Electrically operated engine throttle valve actuating device
    • 电动发动机节气门驱动装置
    • US4508078A
    • 1985-04-02
    • US511983
    • 1983-07-08
    • Nobuo TakeuchiTadashi KanekoTadataka NakazumiKatsuhiko Yokooku
    • Nobuo TakeuchiTadashi KanekoTadataka NakazumiKatsuhiko Yokooku
    • F02D9/02F02D11/10F02D41/04F02D41/14F02D9/00
    • F02D11/105F02D2011/102
    • An engine throttle valve operating device comprising a throttle valve operating foot pedal position detector for detecting the position of the foot pedal and producing a foot pedal position signal corresponding to the position of the foot pedal, a rapid acceleration detector connected with the foot pedal position detection for receiving the foot pedal position signal therefrom and producing a rate signal corresponding to a rate of change per unit time of the position of the foot pedal, a throttle valve actuator for actuating the engine throttle valve, a throttle valve driving signal generating circuit responsive to the foot pedal position signal and the rate signal to produce a first drive signal for operating the actuator in accordance with the foot pedal position signal when the rate of change per unit time of the position of the foot pedal is smaller than a predetermined value and a second drive signal for operating the actuator by a greater extent than under the first drive signal when the rate of change per unit time of the position of the operating member is greater than the predetermined value.
    • 一种发动机节流阀操作装置,包括用于检测脚踏板位置并产生对应于脚踏板位置的脚踏踏板位置信号的节流阀操作脚踏位置检测器,与踏板位置检测器相连的快速加速度检测器 用于从其接收脚踏踏板位置信号并产生与脚踏板位置的每单位时间的变化率对应的速率信号,用于致动发动机节气门的节气门致动器,响应于 脚踏板位置信号和速率信号,以便当脚踏板的位置的每单位时间的变化率小于预定值时,产生用于根据脚踏板位置信号操作致动器的第一驱动信号,并且 第二驱动信号用于比第一驱动信号更大程度地操作致动器 当操作构件的位置的每单位时间的变化率大于预定值时。
    • 7. 发明授权
    • Exhaust gas recirculation system for internal combustion engine
    • 内燃机排气再循环系统
    • US4471745A
    • 1984-09-18
    • US536984
    • 1983-09-29
    • Sadashichi YoshiokaTatsuro OdaYoshitaka NomotoKatsuhiko Yokooku
    • Sadashichi YoshiokaTatsuro OdaYoshitaka NomotoKatsuhiko Yokooku
    • F02D21/08F02D41/00F02D41/14F02D43/00F02D45/00F02M25/07F02M25/06
    • F02D41/005F02D41/1487Y02T10/47
    • An internal combustion engine is provided with an exhaust gas recirculating passage for communicating the intake passage and the exhaust passage thereof. The recirculating passage is provided with a valve for controlling the amount of recirculated exhaust gas. A fundamental air-fuel ratio control value for regulating the air-fuel ratio of the intake gas to a predetermined value is corrected by an operating condition correction value according to the operating condition of the engine. The operating condition correction value is successively changed to an optimal value by comparing the actually obtained air-fuel ratio with a predetermined value. The operating condition correction value for correcting the fundamental air-fuel ratio control value when the exhaust gas recirculation is carried out is changed independently from the same for correcting the fundamental air-fuel ratio correction value when the exhaust gas recirculation is not carried out. The initial values of the former correction value and the latter correction value are compared with each other, while the present values of the former correction value and the latter correction value are compared with each other. The comparison value of the initial values and the comparison value of the present values are compared with each other to detect clogging of the recirculating passage. When clogging is detected, the valve is controlled to compensate for the clogging.
    • 内燃机设置有排气再循环通道,用于连通进气通道和排气通道。 再循环通道设置有用于控制再循环废气量的阀。 通过根据发动机的运转状态的运转状态校正值来校正用于将进气的空燃比调整为规定值的基本空燃比控制值。 通过将实际获得的空燃比与预定值进行比较,将操作条件校正值连续地变更为最佳值。 当进行废气再循环时,用于校正基本空燃比控制值的操作条件校正值与不进行排气再循环时校正基本空燃比校正值的方法相同地改变。 将前一校正值和后一校正值的初始值彼此进行比较,而将前一校正值和后一校正值的当前值彼此进行比较。 将当前值的初始值和比较值的比较值进行比较,以检测再循环通道的堵塞。 当检测到堵塞时,控制阀门以补偿堵塞。