Fuel injection control device for internal combustion engine

    公开(公告)号:US09631574B2

    公开(公告)日:2017-04-25

    申请号:US14353114

    申请日:2011-10-26

    Inventor: Tomohiro Nakano

    Abstract: When injecting fuel from a direct injector and a port injector such that a requested fuel injection amount is obtained in an internal combustion engine, the direct injector is driven in the following manner. After a target fuel injection amount for the fuel injection with the higher priority among fuel injection in the late stage of a compression stroke and fuel injection in the early stage of an intake stroke in the direct injector has been set on the basis of the engine operating condition, the target fuel injection amount for the fuel injection with the lower priority is set on the basis of the engine operating condition. Moreover, the direct injector is driven in such a manner that the target fuel injection amount for each of the abovementioned fuel injections set in this manner is obtained.

    CONTROL SYSTEM FOR SPARK-IGNITION INTERNAL COMBUSTION ENGINE
    37.
    发明申请
    CONTROL SYSTEM FOR SPARK-IGNITION INTERNAL COMBUSTION ENGINE 有权
    火花点火内燃机控制系统

    公开(公告)号:US20170002724A1

    公开(公告)日:2017-01-05

    申请号:US15104777

    申请日:2014-12-09

    Inventor: Koshiro KIMURA

    Abstract: A control system for a spark-ignition internal combustion engine configured to produce tumble flow in a cylinder is provided. The spark-ignition internal combustion engine includes an ignition plug configured to ignite an air-fuel mixture in the cylinder. The control system includes a tumble flow rate controller configured to change a position of a vortex center of the tumble flow as viewed in a direction of a center axis of the cylinder, so as to control a flow rate of the tumble flow around the ignition plug at the ignition timing of the ignition plug.

    Abstract translation: 提供一种用于在气缸中产生滚筒流的火花点火内燃机的控制系统。 火花点火式内燃机包括点火装置,其被配置为点燃气缸中的空气 - 燃料混合物。 所述控制系统包括滚筒流量控制器,所述滚筒流量控制器构造成当所述滚筒的中心轴线方向观察时,改变所述滚筒流的涡流中心的位置,以便控制所述火花塞周围的滚筒流量 在火花塞的点火正时。

    Minimization of the combustion noise of an internal combustion engine based on a detection of an instability of the position of the maximum of a cylinder pressure gradient
    38.
    发明授权
    Minimization of the combustion noise of an internal combustion engine based on a detection of an instability of the position of the maximum of a cylinder pressure gradient 有权
    基于对气缸压力梯度的最大值的位置的不稳定性的检测来最小化内燃机的燃烧噪声

    公开(公告)号:US09500147B2

    公开(公告)日:2016-11-22

    申请号:US14403615

    申请日:2013-05-21

    Inventor: Cyril Juvenelle

    Abstract: A method and a device for regulating the combustion noise of an internal combustion engine includes operating the internal combustion engine, detecting a profile of the cylinder pressure in the engine over time, determining a profile of the gradient of the cylinder pressure over time, defining the temporal position of the maximum of the pressure gradient in the determined profile, and modifying at least one parameter that is relevant to the combustion of fuel in the engine, wherein the pressure profile is detected, the pressure gradient is determined, and the temporal position of the maximum of the pressure gradient is defined until the temporal position of the maximum of the pressure gradient begins to fluctuate within a plurality of engine combustion cycles that follow one another. Furthermore, an engine controller having such a device and a computer program for carrying out such a method are described.

    Abstract translation: 一种用于调节内燃机的燃烧噪声的方法和装置,包括操作内燃机,随着时间的推移检测发动机中气缸压力的分布,确定气缸压力随时间变化的曲线, 在确定的轮廓中压力梯度的最大值的时间位置,以及修改与发动机中的燃料燃烧相关的至少一个参数,其中检测压力分布,确定压力梯度,以及时间位置 压力梯度的最大值被定义为在压缩梯度的最大值的时间位置在彼此相邻的多个发动机燃烧循环之间开始波动。 此外,描述了具有这种装置的发动机控制器和用于执行这种方法的计算机程序。

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