EGR control system for internal combustion engine
    1.
    发明授权
    EGR control system for internal combustion engine 失效
    内燃机EGR控制系统

    公开(公告)号:US06298835B1

    公开(公告)日:2001-10-09

    申请号:US09580455

    申请日:2000-05-30

    IPC分类号: F02M2507

    摘要: An EGR control system for a direct injection spark ignition engine operated at a plurality of the combustion modes comprising stratified-charge combustion and premix-charge combustion. The system includes a flow rate control valve equipped at the EGR passage to regulate flow rate of the exhaust gas to be recirculated which is operated when the one combustion mode is determined to be changed to another of a plurality of the combustion modes, thereby ensuring an EGR amount that is neither deficient nor excessive for the combustion mode, while preventing misfire from happening and preventing the degradation of drivability, fuel economy and emission performance from occurring. Alternatively, the system includes an actuator for regulating an opening of a throttle valve or a second EGR control valve installed in a branch passage and a passage switching valve for switching the EGR passage and the branch passage.

    摘要翻译: 一种用于直接喷射火花点火发动机的EGR控制系统,其以多个燃烧模式操作,包括分层充气燃烧和预混燃料燃烧。 该系统包括设置在EGR通道处的流量控制阀,以调节当将一个燃烧模式改变为多个燃烧模式中的另一个时操作的待循环废气的流量,从而确保 EGR量对于燃烧模式既不缺乏也不过度,同时防止发生失火,并且防止发生驾驶性能,燃料经济性和排放性能的劣化。 或者,该系统包括用于调节安装在分支通道中的节流阀或第二EGR控制阀的开度的致动器和用于切换EGR通道和分支通道的通道切换阀。