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    • 3. 发明授权
    • Method and apparatus for performing fuel mixture enrichment
    • 用于进行燃料混合物浓缩的方法和装置
    • US4335696A
    • 1982-06-22
    • US165920
    • 1980-07-03
    • Hans SchnurleMichael HorbeltUlrich DrewsPeter WernerOtto GlocklerDieter GuntherRichard Bertsch
    • Hans SchnurleMichael HorbeltUlrich DrewsPeter WernerOtto GlocklerDieter GuntherRichard Bertsch
    • F02D41/34F02D41/10F02D41/18F02M51/02
    • F02D41/10F02D41/182Y02T10/142
    • There is described a method and an apparatus for use with the fuel preparation system of an internal combustion engine, for example, a fuel injection system which operates injection valves with electrical control pulses. When the gas pedal of a vehicle is actuated abruptly, the air flow measuring device of such systems is subject to oscillations around its equilibrium point, and the initial one of these swings is used to cause enrichment of the fuel-air mixture. The return swing generates an undesired lean signal which is suppressed by a "damping circuit". In addition, there is provided mixture enriching during steady applications of the gas pedal by means of a time-decaying enrichment signal generated by a slow acting circuit which operates in superposition to the action of the damping circuit. Both circuits may be suppressed by a blocking circuit during certain engine conditions, for example, during engine starting and engine overrunning as well as on the basis of temperature.
    • 描述了用于内燃机的燃料制备系统的方法和装置,例如,具有电控制脉冲操作喷射阀的燃料喷射系统。 当车辆的油门踏板突然动作时,这种系统的空气流量测量装置在其平衡点周围发生振荡,并且这些摆动中的最初的一个用于引起燃料 - 空气混合物的浓缩。 返回摆动产生由“阻尼电路”抑制的不希望的倾斜信号。 此外,通过由缓慢作用的电路产生的时间衰减浓缩信号,在油门踏板的稳定应用期间提供混合物富集,该缓慢作用电路与阻尼电路的作用叠加。 在某些发动机条件下,例如在发动机起动和发动机超速以及基于温度的情况下,两个回路可能被阻塞电路所抑制。
    • 10. 发明授权
    • Method and apparatus for adjusting fuel injection control
    • 调节燃油喷射控制的方法和装置
    • US4278061A
    • 1981-07-14
    • US859509
    • 1977-12-12
    • Peter WernerUlrich Drews
    • Peter WernerUlrich Drews
    • F02D41/34F02D41/04F02D41/18F02D41/30F02D5/02
    • F02D41/3005F02D41/182F02D2200/503
    • A fuel injection system of an internal combustion engine generates valve-actuating pulses for actuating electromagnetic fuel injection valves. The length, or duration, of these valve actuating pulses is a function of various engine conditions and they are generated by a pulse-length multiplying circuit from preliminary control pulses derived from two basic engine variables, e.g. engine speed and air flow rate. In order to compensate for the decreasing pressure drop across the injection valve orifice at high engine load due to increasing manifold pressure, the invention describes methods for lengthening the fuel valve-actuating pulses by engaging the pulse-length multiplying circuit, in order to change the charging or discharging times of the timing capacitor therein. Another method proposed is to engage the battery-voltage compensation circuit in the system to lengthen the valve-actuating pulses. Electronic circuitry to perform these corrections is also described.
    • 内燃机的燃料喷射系统产生用于致动电磁燃料喷射阀的阀致动脉冲。 这些阀致动脉冲的长度或持续时间是各种发动机条件的函数,并且它们由来自两个基本发动机变量的初步控制脉冲的脉冲倍增电路产生。 发动机转速和空气流量。 为了补偿由于歧管压力的增加而在高发动机负载下的喷射阀孔口处压降的减小,本发明描述了通过接合脉冲倍增电路来延长燃料阀致动脉冲的方法,以便改变 定时电容器的充电或放电时间。 提出的另一种方法是使系统中的电池电压补偿电路接合以延长阀致动脉冲。 还描述了执行这些校正的电子电路。