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    REDUCING FIRING DECISION LATENCY IN SKIP FIRE ENGINE OPERATION
    114.
    发明申请
    REDUCING FIRING DECISION LATENCY IN SKIP FIRE ENGINE OPERATION 审中-公开
    减少飞行员发动机运行中的火灾决定延期

    公开(公告)号：US20170030278A1

    公开(公告)日：2017-02-02

    申请号：US14812370

    申请日：2015-07-29

    Applicant: Tula Technology, Inc.

    Inventor： Andrew W. PHILLIPS

    IPC: F02D41/00 ,  F02D41/26

    CPC classification number: F02D41/0087 ,  F02D13/06 ,  F02D41/009 ,  F02D41/3058 ,  F02D2041/0012 ,  F02D2200/024 ,  F02D2200/101 ,  F02D2250/12

    Abstract: Techniques and controllers are described for dynamically determining when to request firing decisions for individual firing opportunities while operating an internal combustion engine in a skip fire mode. In one aspect, a skip fire controller is arranged to periodically determine the timing by which a next cylinder firing decision request must be made in order to assure that a corresponding firing decision can be implemented as desired, and whether there is sufficient time to wait until at least the next periodic timing determination is made to request the next cylinder firing decision. When there is not sufficient time to wait, a firing decision request is made and the corresponding working cycle is either skipped or fired based on the received firing decision. When there is sufficient time to wait, the firing decision request is delayed until at least the next periodic timing determination is made.

    Abstract translation: 描述了技术和控制器，用于动态地确定何时在以跳火模式操作内燃机的同时请求用于各个发射机会的点火判定。 一方面，跳过火控制器被布置成周期性地确定必须进行下一个气缸触发判定请求的定时，以便确保可以根据需要实现相应的触发判定，以及是否有足够的时间等待直到 至少进行下一个周期性定时确定以请求下一个气缸点火判定。 当没有足够的时间等待时，作出触发决定请求，并且基于接收的触发判定来跳过或触发相应的工作循环。 当有足够的时间等待时，触发判决请求被延迟，直到进行至少下一个定时定时确定。

    ENGINE ERROR DETECTION SYSTEM
    116.
    发明申请
    ENGINE ERROR DETECTION SYSTEM 有权
    发动机错误检测系统

    公开(公告)号：US20160109330A1

    公开(公告)日：2016-04-21

    申请号：US14880652

    申请日：2015-10-12

    Applicant: Tula Technology Inc.

    Inventor： Shikui Kevin CHEN ,  Masaki NAGASHIMA ,  Li-Chun CHIEN

    IPC: G01M15/11 ,  F02D41/22 ,  F02D35/02

    CPC classification number: G01M15/11 ,  F02D35/024 ,  F02D41/0087 ,  F02D41/0097 ,  F02D41/22 ,  F02D2200/1012 ,  F02D2200/1015

    Abstract: A variety of methods and arrangements for detecting misfire and other engine-related errors are described. In one aspect, a window is assigned to a target firing opportunity for a target working chamber. There is an attempt to fire a target working chamber during the target firing opportunity. A change in an engine parameter (e.g., crankshaft angular acceleration) is measured during the window. A model (e.g., a pressure model) is used to help determine an expected change in the engine parameter during the target firing opportunity. Based on a comparison of the expected change and the measured change in the engine parameter, a determination is made as to whether an engine error (e.g., misfire) has occurred.

    Abstract translation: 描述了用于检测失火和其它引擎相关错误的各种方法和装置。 在一个方面，将窗口分配给目标工作室的目标发射机会。 在目标发射机会期间试图射击目标工作室。 在窗口期间测量发动机参数的改变（例如，曲轴角加速度）。 使用模型（例如，压力模型）来帮助确定目标发射机会期间的发动机参数的预期变化。 基于预期变化和发动机参数的测量变化的比较，确定是否发生了发动机错误（例如失火）。

    ENGINE DIAGNOSTICS WITH SKIP FIRE CONTROL
    117.
    发明申请
    ENGINE DIAGNOSTICS WITH SKIP FIRE CONTROL 有权
    发动机诊断与飞行防火

    公开(公告)号：US20160061127A1

    公开(公告)日：2016-03-03

    申请号：US14939498

    申请日：2015-11-12

    Applicant: Tula Technology Inc.

    Inventor： Shikui Kevin CHEN ,  Xin YUAN ,  Joshua P. SWITKES ,  Steven E. CARLSON ,  Mark A. SHOST

    IPC: F02D41/00 ,  F02D41/02

    CPC classification number: F02D41/0087 ,  F02D17/00 ,  F02D17/02 ,  F02D37/02 ,  F02D41/00 ,  F02D41/0082 ,  F02D41/0235 ,  F02D2041/2027 ,  F02D2250/18 ,  Y02T10/44

    Abstract: Methods and devices are described for performing engine diagnostics during skip fire operation of an engine while a vehicle is being driven. Knowledge of the firing sequence is used to determine appropriate times to conduct selected diagnostics and/or to help better interpret sensor inputs or diagnostic results. In one aspect, selected diagnostics are executed when a single cylinder is fired a plurality of times in isolation relative to a sensor used in the diagnosis. In another aspect, selected diagnostics are conducted while the engine is operated using a firing sequence that insures that no cylinders in a first cylinder bank are fired for a plurality of engine cycles while cylinders in a second bank are at least sometimes fired. The described tests can be conducted opportunistically, when conditions are appropriate, or specific firing sequences can be commanded to achieve the desired isolation or skipping of one or more selected cylinders.

    Abstract translation: 描述了用于在车辆被驱动时在发动机的跳过点火操作期间执行发动机诊断的方法和装置。 了解激发序列用于确定适当的时间以进行选定的诊断和/或帮助更好地解释传感器输入或诊断结果。 在一个方面，当单个气缸相对于诊断中使用的传感器被隔离多次时，执行选择的诊断。 在另一方面，当使用确保在第一气缸组中没有气缸在多个发动机循环中被点火的点火顺序来操作发动机时，进行选择的诊断，而在第二组中的气缸至少有时被点火。 所描述的测试可以在条件合适的情况下机会地进行，或者可以命令特定的点火顺序来实现一个或多个选择的气缸的期望的隔离或跳过。

    Managing engine firing patterns and pattern transitions during skip fire engine operation
    120.
    发明授权
    Managing engine firing patterns and pattern transitions during skip fire engine operation 有权
    在跳火消防车操作期间管理发动机起火模式和模式转换

    公开(公告)号：US09200575B2

    公开(公告)日：2015-12-01

    申请号：US14203444

    申请日：2014-03-10

    Applicant: Tula Technology Inc.

    Inventor： Mark A. Shost

    IPC: F02D17/02

    CPC classification number: F02D17/02

    Abstract: Various methods and data structures for managing transition between different firing fractions during skip fire operation of an engine are described. In some embodiments, transitions are constrained to occur when firing sequence segments of a designated length are shared by the first and second firing fractions. In a separate aspect, a data structure that uses current firing fraction phase as a first index and a target firing fraction as a second index may be used to determine a phase of the target firing fraction to enter at a transition. Is some circumstances transitions between a current and target firing fraction may be conducted as a series of steps through intermediate firing fractions.

    Abstract translation: 描述了用于管理在发动机的跳火操作期间在不同的点火分数之间的转换的各种方法和数据结构。 在一些实施例中，当第一和第二击发分数共享指定长度的点火序列片段时，限制转变发生。 在单独的方面，可以使用使用当前点火分数相位作为第一指数的数据结构和作为第二指标的目标点火分数，以确定目标燃烧分数在转变时进入的相位。 当前和目标点火分数之间的某些情况转变可以通过中间火花分数进行一系列步骤。

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