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    • 3. 发明授权
    • Ignition timing control method for internal combustion engines
    • 内燃机点火正时控制方法
    • US4702211A
    • 1987-10-27
    • US819502
    • 1986-01-15
    • Akira KatoHisashi IgarashiTadashi Umeda
    • Akira KatoHisashi IgarashiTadashi Umeda
    • F02P5/15F02P5/14
    • F02P5/1508Y02T10/46
    • An ignition timing control method for an internal combustion engine, which controls the ignition timing, on the basis of a basic ignition timing value determined as a function of operating parameters of the engine. When a detected parameter value indicative of engine temperature is lower than a predetermined value, a correction variable for the basic ignition timing value is determined based upon detected parameter values indicative of engine temperature and engine load magnitude, to correct the basic ignition timing value thereby. Ignition of the mixture is effected at a timing according to the corrected basic ignition timing value. Preferably, when detected engine rotational speed is lower than a predetermined value lower than the engine idling speed or when it is higher than a predetermined high rotational speed value, the correction of the basic ignition timing value by the correction variable is prohibited.
    • 基于作为发动机的运转参数确定的基本点火正时值的内燃机的点火正时控制方法,其控制点火正时。 当检测到的指示发动机温度的参数值低于预定值时,基于检测到的指示发动机温度和发动机负载大小的参数值来确定基本点火正时值的校正变量,从而校正基本点火正时值。 在根据校正的基本点火正时值的定时进行混合物的点火。 优选地,当检测到的发动机转速低于低于发动机空转速度的预定值时,或者当其高于预定的高转速值时,禁止基准点火正时值由校正变量的校正。
    • 5. 发明授权
    • Air-fuel ratio control method for internal combustion engines
    • 内燃机空燃比控制方法
    • US4936278A
    • 1990-06-26
    • US409826
    • 1989-09-20
    • Tadashi Umeda
    • Tadashi Umeda
    • F02D41/04F02D41/10F02D41/14F02D41/34
    • F02D41/1488F02D41/10
    • An air-fuel ratio control method for an internal combustion engine, wherein when the engine is in a feedback control region, a value of concentration of oxygen detected by the O.sub.2 sensor is compared with a predetermined reference value, and the air-fuel ratio of a mixture being supplied to the engine is controlled to a desired value in a feedback manner responsive to the comparison result. When the engine is in a predetermined high load operating region, the feedback control is interrrupted and an amount of fuel to be supplied to the engine is increased by a predetermined amount to thereby enrich the air-fuel ratio. The predetermined amount is increased when the engine is in the predetermined high load operating region and at the same time the detected oxygen concentration indicates that the air-fuel ratio is on a lean side with respect to the desired value.
    • 一种内燃机的空燃比控制方法,其中,当所述发动机处于反馈控制区域时,将由所述O2传感器检测出的氧浓度值与规定的基准值进行比较, 响应于比较结果,供应给发动机的混合物以反馈方式被控制到期望值。 当发动机处于预定的高负载运行区域时,反馈控制被中断,并且要向发动机供给的燃料量增加预定量,从而使空燃比变得丰富。 当发动机处于预定的高负载运行区域中时,预定量增加,同时检测到的氧气浓度表示空燃比相对于期望值处于较弱侧。
    • 6. 发明授权
    • Fuel supply control system for internal combustion engines
    • 内燃机燃油供应控制系统
    • US4892076A
    • 1990-01-09
    • US242330
    • 1988-09-08
    • Kazushige ToshimitsKeiichi OsawaTadashi UmedaKunio Noguchi
    • Kazushige ToshimitsKeiichi OsawaTadashi UmedaKunio Noguchi
    • F02D9/02F02D31/00F02D41/04F02D41/10
    • F02D41/04F02D31/002F02D41/10
    • A fuel supply control system for an internal combustion engine having a throttle body, and a fuel injection valve arranged in an intake manifold upstream of the throttle body for supplying fuel to all cylinders. An air throttle valve has a valve body having a notched opening formed therein and disposed to be opposite the nozzle of the fuel injection valve to increase the flow speed of intake air in the vicinity of the nozzle when the air throttle valve is fully closed. An electronic control unit controls the fuel injection valve in response to operating conditions of the engine. The electronic control unit causes the air throttle valve to be fully closed when a predetermined low rotation-speed operating condition of the engine, in which at least the rotational speed of the engine is lower than a predetermined value, is satisfied. The predetermined value of the rotational speed of the engine is set such that the lower the atmospheric pressure the smaller the predetermined value.
    • 一种用于具有节气门体的内燃机的燃料供给控制系统和配置在节气门体上游的进气歧管中的燃料喷射阀,用于向所有气缸供给燃料。 空气节流阀具有形成在其中并且设置成与燃料喷射阀的喷嘴相对的切口的阀体,以在空气节流阀完全关闭时增加喷嘴附近的进气的流速。 电子控制单元根据发动机的运行状况控制燃料喷射阀。 当满足发动机的至少转速低于预定值的发动机的预定的低转速运行状态时,电子控制单元使空气节流阀完全关闭。 发动机的转速的规定值被设定为使得大气压越低越小规定值。