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    • 1. 发明授权
    • Integrated internal combustion engine control system with high-precision emission controls
    • 具有高精度排放控制的综合内燃机控制系统
    • US06170469B2
    • 2001-01-09
    • US09447661
    • 1999-11-23
    • Hiroyuki ItoyamaKaname Naganuma
    • Hiroyuki ItoyamaKaname Naganuma
    • F02M5100
    • F02D41/0072F02B3/06F02D9/04F02D41/0007F02D41/005F02D41/0077F02D41/187F02D2009/0288F02D2041/0017F02D2041/1432F02D2200/0411F02M26/05F02M26/10F02M26/47F02M26/48F02M26/57G06Q30/06Y02T10/144Y02T10/47
    • An integrated internal combustion engine control system in combination with an automotive emission control system, comprises an exhaust-gas recirculation valve (EGR valve) employed in an EGR system. A target EGR amount is calculated as a function of an intake-air flow rate measured by an air-flow meter and a target EGR rate based on engine operating conditions such as engine speed and engine load. The opening of the EGR valve is adjusted by a command from a control unit so that the target EGR amount is attained. The target EGR rate is preferably calculated depending on an intake pressure as well as the engine speed and the engine load. In combination with the above-mentioned EGR control, a throttle valve disposed in the induction system is effectively controlled in response to an actual valve lift of the EGR valve and a differential pressure between an exhaust pressure and the intake pressure. A fuel-injection amount is accurately controlled in consideration of a variation of an excess-air factor. To compensate a phase lag a predetermined advance processing is made to a signal from a typical air-flow meter, and then the advance-processed signal is effectively signal-processed to invert a reverse-flow component in the output signal.
    • 与汽车排放控制系统相结合的集成内燃机控制系统包括在EGR系统中使用的排气再循环阀(EGR阀)。 根据发动机运转条件如发动机转速和发动机负荷,根据由空气流量计测量的进气流量和目标EGR率来计算目标EGR量。 通过来自控制单元的命令来调节EGR阀的打开,从而达到目标EGR量。 目标EGR率优选根据进气压力以及发动机转速和发动机负荷来计算。 结合上述EGR控制,响应于EGR阀的实际气门升程和排气压力与进气压力之间的差压,有效地控制设置在感应系统中的节流阀。 考虑到过量空气系数的变化,精确地控制燃料喷射量。 为了补偿相位滞后,对来自典型空气流量计的信号进行预定的预处理,然后对预处理信号进行有效的信号处理,以反转输出信号中的反向流分量。
    • 2. 发明授权
    • Integrated internal combustion engine control system with high-precision
emission controls
    • 具有高精度排放控制的综合内燃机控制系统
    • US6032656A
    • 2000-03-07
    • US81027
    • 1998-05-19
    • Hiroyuki ItoyamaKaname Naganuma
    • Hiroyuki ItoyamaKaname Naganuma
    • F02B3/06F02D9/02F02D21/08F02D41/00F02M25/07G06Q30/06F02D43/04
    • F02D41/0072F02D41/0007F02D41/005F02D41/0077F02D9/04F02M26/57G06Q30/06F02B3/06F02D2009/0288F02D2041/0017F02D2041/1432F02D2200/0411F02D41/187F02M26/05F02M26/10F02M26/47F02M26/48Y02T10/144Y02T10/47
    • An integrated internal combustion engine control system in combination with an automotive emission control system, comprises an exhaust-gas recirculation valve (EGR valve) employed in an EGR system. A target EGR amount is calculated as a function of an intake-air flow rate measured by an air-flow meter and a target EGR rate based on engine operating conditions such as engine speed and engine load. The opening of the EGR valve is adjusted by a command from a control unit so that the target EGR amount is attained. The target EGR rate is preferably calculated depending on an intake pressure as well as the engine speed and the engine load. In combination with the above-mentioned EGR control, a throttle valve disposed in the induction system is effectively controlled in response to an actual valve lift of the EGR valve and a differential pressure between an exhaust pressure and the intake pressure. A fuel-injection amount is accurately controlled in consideration of a variation of an excess-air factor. To compensate a phase lag a predetermined advance processing is made to a signal from a typical air-flow meter, and then the advance-processed signal is effectively signal-processed to invert a reverse-flow component in the output signal.
    • 与汽车排放控制系统相结合的集成内燃机控制系统包括在EGR系统中使用的排气再循环阀(EGR阀)。 根据发动机运转条件如发动机转速和发动机负荷,根据由空气流量计测量的进气流量和目标EGR率来计算目标EGR量。 通过来自控制单元的命令来调节EGR阀的打开,从而达到目标EGR量。 目标EGR率优选根据进气压力以及发动机转速和发动机负荷来计算。 结合上述EGR控制,响应于EGR阀的实际气门升程和排气压力与进气压力之间的差压,有效地控制设置在感应系统中的节流阀。 考虑到过量空气系数的变化,精确地控制燃料喷射量。 为了补偿相位滞后,对来自典型空气流量计的信号进行预定的预处理,然后对预处理信号进行有效的信号处理,以反转输出信号中的反向流分量。