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    • 6. 发明授权
    • Method of and system for controlling fuel injection rate in an internal
combustion engine
    • 用于控制内燃机燃油喷射率的方法和系统
    • US4886030A
    • 1989-12-12
    • US162942
    • 1988-02-26
    • Hidehiro ObaSenji Kato
    • Hidehiro ObaSenji Kato
    • F02D41/04F02D41/00F02D41/10F02D41/18F02D41/32
    • F02D41/10F02D41/32
    • A method for controlling fuel injection rate in internal combustion engine in accordance with the intake pressure and the engine speed. The method has the steps of determining the intake pressure using, as a variable, the period of time after a change in the throttle opening, and computing a basic fuel injection period on the basis of the thus computed intake pressure and the engine speed. The fuel injection is conducted by a system in accordance with this method. The system determines the intake pressure in the steady state of engine operation in accordance with the throttle opening and the fuel injection rate, effects a correction on the thus determined intake pressure so as to take into account a delay in response of the intake pressure to the transient period, and determines the basic fuel injection period on the basis of the corrected intake pressure and the engine speed. With this method and system, the fuel injection rate can be controlled in a high degree of conformity with the injection rate demanded by the engine, because the injection rate is determined on the basis of the engine speed and the actual intake pressure which can be predicted with a high degree of precision.
    • 根据进气压力和发动机转速来控制内燃机的燃料喷射率的方法。 该方法具有如下步骤:使用节气门开度变化之后的时间段作为变量来确定进气压力,并且基于由此计算出的进气压力和发动机转速来计算基本燃料喷射周期。 燃料喷射由根据该方法的系统进行。 该系统根据节气门开度和燃料喷射速度来确定发动机运转的稳定状态下的进气压力,对这样确定的进气压力进行校正,以便考虑到对进气压力的响应的延迟 并且基于校正的进气压力和发动机转速来确定基本燃料喷射期间。 利用该方法和系统,可以以与发动机要求的喷射率高度一致的方式控制燃料喷射率,因为喷射速率是基于可以预测的发动机转速和实际进气压力来确定的 具有很高的精度。