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    Physics-based charge temperature model
    3.
    发明授权
    Physics-based charge temperature model 有权

    公开(公告)号：US10961941B1

    公开(公告)日：2021-03-30

    申请号：US16807951

    申请日：2020-03-03

    Applicant: GM Global Technology Operations LLC

    Inventor： Wesley R. Haney ,  Layne K. Wiggins ,  Shawn W. Murphy

    IPC: F02D41/00 ,  F02D41/02 ,  F02D41/26 ,  F02B29/04

    Abstract: A physics-based charge temperature model to calculate a charge air temperature for an automobile vehicle includes multiple variables. The multiple variables include: a first variable defining an engine speed of an engine defining revolutions per minute of a crankshaft of the engine; a second variable defining a cam position; a third variable defining an engine coolant temperature; a fourth variable defining an air intake temperature; a fifth variable defining an engine air flow; and a sixth variable defining a firing fraction of the engine. A controller provides multiple lookup tables. The controller controls operation of the engine using the multiple variables and data in the multiple lookup tables to calculate a charge air temperature for individual intake strokes of at least one cylinder of the engine.

    INTAKE MANIFOLD AND CYLINDER AIRFLOW ESTIMATION SYSTEMS AND METHODS
    5.
    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

    Applicant: GM Global Technology Operations LLC

    Inventor： Christopher E. WHITNEY ,  Layne K. Wiggins ,  Rafat F. Hattar ,  Gary Robert Cygan, JR. ,  Ning Jin ,  Gregory P. Matthews

    IPC: F02D35/02 ,  F02D41/30 ,  F02D37/02

    CPC classification number: F02D35/024 ,  F02D37/02 ,  F02D41/182 ,  F02D41/3005 ,  F02D2200/0402 ,  F02D2200/0408 ,  F02D2200/0411

    Abstract: 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.

    Abstract translation: 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。

    Method of continuously calculating trapped and scavenged air per cylinder
    9.
    发明授权
    Method of continuously calculating trapped and scavenged air per cylinder 有权

    公开(公告)号：US10132260B2

    公开(公告)日：2018-11-20

    申请号：US15055134

    申请日：2016-02-26

    Applicant: GM Global Technology Operations LLC

    Inventor： Jay S. Meldrum ,  Gary Robert Cygan, Jr. ,  Layne K. Wiggins ,  Bastian Maass

    IPC: F02D41/18 ,  F02D41/26 ,  G01M15/05 ,  G01M15/09 ,  F02D41/14 ,  F02D13/02 ,  F02D41/00

    Abstract: Computational models and calculations relating to trapped and scavenged air per cylinder (APC) improve scavenging and non-scavenging operational modes of internal combustion engines as well as the transition there-between. Data from sensors which include engine speed, manifold air pressure, barometric pressure, crankshaft position, and valve state are provided to a pair of artificial neural networks. A first neural network utilizes this data to calculate the nominal volume of gas, i.e., air trapped in the cylinder. A second neural network utilizes this data to calculate the trapping ratio. The output of the first network is utilized with the ideal gas law to calculate the actual mass of trapped APC. The actual mass of trapped APC is also divided by the trapping ratio calculated by the second network to determine the total APC and is further utilized to calculate the scavenged APC by subtracting the trapped APC from the total APC.

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