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    • 3. 发明公开
    • Diesel engine
    • Dieselmotor
    • EP1571322A2
    • 2005-09-07
    • EP05004149.0
    • 2005-02-25
    • Isuzu Motors Limited
    • Ishikawa, Naoya
    • F02D43/00F02D41/18
    • F02D41/0052F02B29/0406F02D41/0002F02D41/0007F02D41/18F02D41/3035F02D2041/0017F02D2041/0022F02M26/05F02M26/23F02M26/46F02M26/47F02M26/48Y02T10/42Y02T10/47
    • It is an object of the present invention to provide a diesel engine comprising an EGR valve (7), an intake throttle valve (13), a control unit (19) for controlling those EGR valve (7) and intake throttle valve (13), and a detection unit (11) for detecting the intake air quantity upstream of an EGR gas inlet portion, the diesel engine implementing a premix combustion at least in the prescribed operation region. The control unit (19), at least in the operation region in which the premix combustion is implemented, determines a target intake air quantity necessary for igniting the gas mixture at the target timing based on the engine operation state and controls the intake throttle valve (13) and/or EGR valve (7) so that the actual intake air quantity detected by the detection unit (11) matches the target intake air quantity. As a result, the ignition timing of the fuel in premix combustion can be easily and optimally controlled.
    • 本发明的目的是提供一种柴油发动机,其包括EGR阀(7),进气节气门(13),用于控制那些EGR阀(7)和进气节流阀(13)的控制单元(19) 以及用于检测EGR气体入口部分上游的进气量的检测单元(11),所述柴油发动机至少在规定的操作区域中实施预混燃烧。 控制单元(19)至少在实施预混合燃烧的操作区域中,基于发动机运转状态确定在目标定时点燃气体混合物所需的目标进气量,并控制进气节流阀( 13)和/或EGR阀(7),使得由检测单元(11)检测到的实际进气量与目标进气量匹配。 结果,可以容易且最佳地控制预混燃烧中的燃料的点火正时。