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    ENGINE ERROR DETECTION SYSTEM
    3.
    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）。

    VALVE FAULT DETECTION
    6.
    发明申请
    VALVE FAULT DETECTION 有权
    阀故障检测

    公开(公告)号：US20150233289A1

    公开(公告)日：2015-08-20

    申请号：US14700494

    申请日：2015-04-30

    Applicant: Tula Technology, Inc.

    Inventor： Matthew A. YOUNKINS ,  Shikui Kevin CHEN ,  Li-Chun CHIEN ,  Masaki NAGASHIMA ,  John W. PARSELS ,  Geoff ROUTLEDGE

    IPC: F02B77/08 ,  G01P15/00 ,  G01L3/00 ,  G01M15/04

    CPC classification number: F02B77/082 ,  F02D13/06 ,  F02D35/023 ,  F02D41/0087 ,  F02D41/1498 ,  F02D41/22 ,  F02D2041/001 ,  G01L3/00 ,  G01M15/042 ,  G01P15/00 ,  Y02T10/18 ,  Y02T10/40

    Abstract: Methods and systems are described for detecting valve actuation faults in internal combustion engines operating in a skip fire operational mode. In one aspect, a torque model is used to estimate an expected net torque during a selected operating window. The torque model considers an expected torque contribution from each of the cylinders and accounts for the effects of specific skip fire firing decisions that affect the expected torque contribution from each cylinder. A parameter indicative of the actual engine torque is also measured. Valve actuation faults can then be identified based at least in part on a comparison of the measured parameter to an expected parameter value that is based at least in part on the expected net torque. With the described approaches, the occurrence of the valve actuation fault can be made within one engine cycle of the initial occurrence of the fault.

    Abstract translation: 描述了用于检测以跳火操作模式操作的内燃机中的阀致动故障的方法和系统。 在一个方面，使用扭矩模型来估计所选操作窗口期间的预期净转矩。 扭矩模型考虑了每个气缸的预期扭矩贡献，并考虑了影响每个气缸的预期转矩贡献的特定跳火点火决定的影响。 还测量了表示实际发动机扭矩的参数。 至少部分地基于测量参数与至少部分地基于预期净转矩的预期参数值的比较来识别阀致动故障。 利用所述方法，可以在故障的初始发生的一个发动机循环内进行气门致动故障的发生。

    TRANSITORY TORQUE MODIFICATIONS USING SKIP FIRE CONTROL
    9.
    发明申请
    TRANSITORY TORQUE MODIFICATIONS USING SKIP FIRE CONTROL 有权
    使用跳过火灾控制的异动转矩修正

    公开(公告)号：US20140045652A1

    公开(公告)日：2014-02-13

    申请号：US13963744

    申请日：2013-08-09

    Applicant: Tula Technology, Inc.

    Inventor： Steven E. CARLSON ,  Xin YUAN ,  Joshua P. SWITKES ,  Li-Chun CHIEN

    IPC: B60W10/06 ,  B60W10/11

    CPC classification number: B60W10/06 ,  B60W10/11 ,  B60W30/19 ,  F02D41/0087 ,  F02D41/023 ,  F02D41/1497 ,  F02D2250/18 ,  F02D2250/21 ,  F02P5/1504 ,  F02P5/1512 ,  F02P9/005 ,  F16H63/502 ,  Y02T10/46 ,  Y10T477/677

    Abstract: Methods and devices are described that utilize skip fire techniques to rapidly meet requests for transitory changes in the output of an engine. Specifically, the fraction or percentage of the working cycles that are fired can be changed during a transitory event so that the engine delivers the desired transitory engine output. Once the transitory event is over, normal engine operation may be restored. The described techniques are useful in a variety of applications that require a relatively quick, but transitory, reduction in engine output to meet vehicle control requirements. One particularly useful application is during transmission shift events. Other representative applications include: loss of traction events, stability control events, wheel hop prevention events, etc.

    Abstract translation: 描述了利用跳火技术快速满足对发动机的输出的暂时变化的请求的方法和装置。 具体地说，在瞬态事件期间可以改变被激发的工作循环的分数或百分比，以便发动机输出期望的暂时发动机输出。 一旦暂时事件结束，可以恢复正常的发动机运转。 所描述的技术在各种应用中是有用的，其需要相对快速但短暂的发动机输出的降低以满足车辆控制要求。 一个特别有用的应用是传输移位事件。 其他代表性应用包括：牵引事件的损失，稳定性控制事件，防止跳闸事件等。

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