METHOD AND APPARATUS FOR MONITORING PERFORMANCE OF EGR HEAT EXCHANGER
    5.
    发明申请
    METHOD AND APPARATUS FOR MONITORING PERFORMANCE OF EGR HEAT EXCHANGER 有权
    用于监测EGR换热器性能的方法和装置

    公开(公告)号:US20130312716A1

    公开(公告)日:2013-11-28

    申请号:US13478219

    申请日:2012-05-23

    CPC classification number: F02D21/08 F02M26/33 Y02T10/121

    Abstract: An internal combustion engine is equipped with an EGR system that includes an EGR heat exchanger. A method for monitoring the EGR heat exchanger includes monitoring an EGR gas inlet temperature to the EGR heat exchanger, an EGR gas outlet temperature from the EGR heat exchanger, a coolant temperature and a mass EGR flowrate through the EGR heat exchanger for a present engine operating point. An actual thermal effectiveness of the EGR heat exchanger for the present engine operating point is determined. A maximum heat transfer coefficient for the EGR side of the EGR heat exchanger is determined for the present engine operating point. The EGR heat exchanger is regenerated when the actual heat transfer coefficient differs from the maximum heat transfer coefficient for the present engine operating point.

    Abstract translation: 内燃机配备有包括EGR热交换器的EGR系统。 一种用于监测EGR热交换器的方法,包括监测EGR热交换器的EGR气体入口温度,来自EGR热交换器的EGR气体出口温度,冷却剂温度和通过用于本发动机运行的EGR热交换器的质量EGR流量 点。 确定本发动机工作点的EGR热交换器的实际热效率。 对于本发动机工作点确定EGR热交换器的EGR侧的最大传热系数。 当实际传热系数与当前发动机工作点的最大传热系数不同时,再生EGR热交换器。

    Direct-injection spark-ignition system
    6.
    发明授权
    Direct-injection spark-ignition system 有权
    直喷式点火系统

    公开(公告)号:US08146555B2

    公开(公告)日:2012-04-03

    申请号:US12057826

    申请日:2008-03-28

    CPC classification number: H01T13/52 F02B23/101 H01T13/467 Y02T10/125

    Abstract: A spark plug includes a center electrode substantially aligned with a longitudinal first axis and a surface-gap ground electrode radially aligned with the center electrode along a surface-gap electrode second axis substantially orthogonal to the longitudinal first axis and passing therethrough. The center electrode and the surface-gap ground electrode define a radial spark gap therebetween. The spark plug further includes a J-gap ground electrode radially aligned with the center electrode. The center electrode and the J-gap ground electrode define an axial spark gap therebetween. The J-gap ground electrode radial alignment has an angular separation from the surface-gap electrode second axis of no greater than about 30 degrees.

    Abstract translation: 火花塞包括基本上与纵向第一轴线对准的中心电极和沿着基本上垂直于纵向第一轴线并穿过其的表面间隙电极第二轴线与中心电极径向对准的表面间隙接地电极。 中心电极和表面间隙接地电极在它们之间限定径向火花隙。 火花塞还包括与中心电极径向对准的J形间隙接地电极。 中心电极和J-间隙接地电极在它们之间限定了轴向火花隙。 J间隙接地电极径向对准与表面间隙电极第二轴的角度间隔不大于约30度。

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