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    • 9. 发明公开
    • Apparatus and method for controlling maximum cylinder pressure in an internal combustion engine
    • 用于控制内燃机中的最大气缸压力的装置和方法
    • EP2017451A3
    • 2017-07-05
    • EP08158978.0
    • 2008-06-25
    • Delphi Technologies, Inc.
    • Fattic, Gerald Thomas
    • F02D35/02F02D41/00F02D41/40F02D21/08F02D43/00F02D37/00
    • F02D41/40F02D21/08F02D35/023F02D37/00F02D41/005F02D41/0085F02D43/00Y02T10/44Y02T10/47
    • An Engine Control Module (18) includes an electronic controller (16) for controlling the position of an EGR valve, the timing of opening and closing of the engine combustion valves, and the timing of the individual cylinder fuel injectors of an engine (10). Each engine cylinder includes a pressure sensor (12a-h). Peak cylinder pressure is sent to the ECM during each firing cycle. The ECM is programmed with required maximum percentages of EGR and optimal combustion valve timing for each engine operating condition, and sets the EGR valve and/or the camshaft phaser accordingly to adjust combustion in all the engine cylinders. The ECM also compares the measured peak pressure for each cylinder and adjusts the timing of fuel injection for the next firing cycle to trim the measured peak pressure in each cylinder to a predetermined level at or below the maximum allowable peak firing pressure for the engine.
    • 发动机控制模块(18)包括用于控制发动机(10)的EGR阀的位置,发动机燃烧阀的打开和关闭的正时以及单个气缸燃料喷射器的正时的电子控制器(16) 。 每个发动机气缸包括压力传感器(12a-h)。 在每个燃烧循环期间,气缸压力峰值被发送到ECM。 对于每个发动机工况,ECM被编程为具有所需的最大EGR百分比和最佳燃烧气门正时,并且相应地设定EGR阀和/或凸轮轴移相器以调节所有发动机气缸中的燃烧。 ECM还比较每个气缸的测量峰值压力,并调整下一个燃烧循环的燃料喷射正时,以将每个气缸中测得的峰值压力调整至等于或低于发动机最大允许峰值点火压力的预定水平。