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    • 3. 发明授权
    • Mechanical air-fuel control for feedback control of external devices
    • 机械空燃控制,用于外部设备的反馈控制
    • US5572972A
    • 1996-11-12
    • US257874
    • 1994-06-10
    • Todd A. SheridanRod RadovanovicAngela R. May
    • Todd A. SheridanRod RadovanovicAngela R. May
    • F02B33/44F02D1/00F02D1/06F02D31/00F02M59/44
    • F02B33/446F02D1/065F02D31/009F02M59/447F02D2001/008
    • A control system for a diesel engine for creating an ON/OFF feedback signal for controlling engine-related functions includes a mechanical assembly involving a fuel injection pump, a governor for the fuel injection pump, a pair of cam stops as part of the governor and an electrically grounded moveable rack finger. One of the cam stops is a fixed stop which limits travel of the rack finger and thus limits fueling to a predetermined level. The only variable which determines fuel quantity for this full load cam stop is engine speed. The second stop which limits rack finger travel is an air-fuel cam stop which has two independent variables that determine the fuel limit. These independent variables are engine speed and engine boost pressure. The air-fuel cam stop is placed within a housing which is electrically isolated from the rest of the fuel pump and the engine. Once there is contact between the moveable rack finger and the air-fuel cain an electrical signal (ON) is created which may be used to activate or energize other engine-related functions such as shutting off EGR during air limited operation.
    • 用于产生用于控制发动机相关功能的ON / OFF反馈信号的柴油发动机的控制系统包括机械组件,其包括燃料喷射泵,用于燃料喷射泵的调速器,作为调速器一部分的一对凸轮停止器, 电接地可移动的支架指。 其中一个凸轮止动件是固定的止挡件,其限制了齿条手指的移动,从而将加燃料限制在预定水平。 确定该满载凸轮挡块的燃油量的唯一变量是发动机转速。 限制机架指针行程的第二个停止是具有确定燃料极限的两个独立变量的空燃料凸轮停止。 这些独立变量是发动机转速和发动机增压压力。 空气燃料凸轮止动件放置在与燃料泵和发动机的其余部分电隔离的壳体内。 一旦可移动的齿条指和空气燃料笼之间存在接触,就产生一个电信号(ON),该信号可用于激活或激励其它与发动机有关的功能,例如在空气限制操作期间关闭EGR。