INTAKE MANIFOLD AND CYLINDER AIRFLOW ESTIMATION SYSTEMS AND METHODS
    15.
    发明申请
    INTAKE MANIFOLD AND CYLINDER AIRFLOW ESTIMATION SYSTEMS AND METHODS 审中-公开
    进气歧管和气缸气流估计系统和方法

    公开(公告)号:US20170016407A1

    公开(公告)日:2017-01-19

    申请号:US14797374

    申请日:2015-07-13

    IPC分类号: F02D35/02 F02D41/30 F02D37/02

    摘要: An engine control system includes a prediction module that, during an exhaust stroke of a first cylinder of an engine, determines a predicted intake manifold pressure at an end of a next intake stroke of a second cylinder following the first cylinder in a firing order of the cylinders. An air per cylinder (APC) module determines a predicted mass of air that will be trapped within the second cylinder at the end of the next intake stroke of the second cylinder based on the predicted intake manifold pressure. A fueling module controls fueling of the second cylinder during the next intake stroke based on the predicted mass of air.

    摘要翻译: 发动机控制系统包括预测模块,该预测模块在发动机的第一气缸的排气冲程期间确定在第一气缸之后的第二气缸的下一个进气冲程结束时的预测进气歧管压力, 气瓶。 基于预测的进气歧管压力,每缸(APC)模块的空气确定在第二气缸的下次进气冲程结束时将被捕获在第二气缸内的空气的预测质量。 燃料供给模块基于预测的空气质量来控制下一个进气冲程期间的第二气缸的燃料供给。

    Physics based single cylinder charging model

    公开(公告)号:US10047686B2

    公开(公告)日:2018-08-14

    申请号:US15054498

    申请日:2016-02-26

    发明人: Ning Jin

    IPC分类号: F02D35/02 F02D41/00 F02D41/18

    摘要: A system includes a residual per cylinder calculation module that calculates an amount of residual (i.e., trapped exhaust gas) within an engine cylinder. A temperature calculation module calculates a temperature within the engine cylinder based on the amount of residual. A first air per cylinder (APC) calculation module calculates total charge content within the engine cylinder based on the temperature and calculates a first amount of air trapped within the engine cylinder based on the total charge content and the amount of residual. A residual mass fraction (RMF) calculation module calculates an RMF of the exhaust gas based on the amount of trapped exhaust gas at EVC and the total charge content. A second APC calculation module determines a backflow of the charged content into the engine cylinder and calculates a second amount of air trapped within the engine cylinder based on the backflow and the first amount of air.