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    • 5. 发明授权
    • Exhaust gas recycling system
    • 废气回收系统
    • US4134376A
    • 1979-01-16
    • US836903
    • 1977-09-26
    • Takashige TokushimaHideki Tanaka
    • Takashige TokushimaHideki Tanaka
    • F02M25/07F02M25/06
    • F02M26/55F02M26/38F02M26/17
    • An exhaust gas recycling system for use in an internal combustion engine in which downstream exhaust gas recycling is started when the carburetor throttle valve is opened larger than a first predetermined opening degree, while upstream exhaust gas recycling is commenced when the carburetor throttle valve is opened larger than a second predetermined opening degree. The second predetermined opening degree is set at a level exceeding at least a maximum amount or peak value of the downstream exhaust gas recycling, and thereafter, reduction of downstream exhaust gas recycling ratio following decrease of intake negative pressure at the downstream of the carburetor throttle valve is compensated by increase of the upstream exhaust gas recycling augmented in proportion to the intake amount of the air-fuel mixture, through employment of flow rate control valves for the upstream and downstream exhaust gas recycling.
    • 一种用于内燃机的废气再循环系统,其中当化油器节流阀打开时大于第一预定开度时开始下游废气再循环,同时当化油器节流阀打开时上游废气再循环更大 比第二预定开度。 第二预定开度被设定为超过下游废气再循环的最大值或峰值的水平,然后在化油器节流阀下游的进气负压降低后减少下游废气再循环率 通过使用用于上游和下游废气再循环的流量控制阀,通过增加与空气 - 燃料混合物的进入量成比例的上游排气回收的增加来补偿。