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    NOISE, VIBRATION AND HARSHNESS REDUCTION IN A SKIP FIRE ENGINE CONTROL SYSTEM
    12.
    发明申请
    NOISE, VIBRATION AND HARSHNESS REDUCTION IN A SKIP FIRE ENGINE CONTROL SYSTEM 审中-公开
    噪声，振动和谐波减少在一个飞行火灾发动机控制系统

    公开(公告)号：US20170051689A1

    公开(公告)日：2017-02-23

    申请号：US15340291

    申请日：2016-11-01

    Applicant: Tula Technology, Inc.

    Inventor： Louis J. SERRANO ,  Xin YUAN ,  John W. PARSELS ,  Mohammad R. PIRJABERI ,  Mark A. WILCUTTS ,  Masaki NAGASHIMA

    IPC: F02D41/00 ,  F02D41/30 ,  F02D41/14

    CPC classification number: F02D41/0087 ,  F02D41/0002 ,  F02D41/1498 ,  F02D41/3058 ,  F02D41/307 ,  F02D2041/0012

    Abstract: A variety of methods and arrangements for reducing noise, vibration and harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing sequence is used to operate the engine in a skip fire manner A smoothing torque is determined that is applied to a powertrain by an energy storage/release device. The smoothing torque is arranged to at least partially cancel out variation in torque generated by the skip fire firing sequence. Various methods, powertrain controllers, arrangements and computer software related to the above operations are also described.

    Abstract translation: 描述了用于减少跳火消防车控制系统中的噪声，振动和粗糙度（NVH）的各种方法和装置。 在一个方面，使用点火顺序来以跳火方式操作发动机。确定由能量存储/释放装置施加到动力系的平滑转矩。 平滑扭矩被布置成至少部分抵消由跳过火焰点火序列产生的扭矩的变化。 还描述了与上述操作相关的各种方法，动力系统控制器，布置和计算机软件。

    DRIVE TRAIN SLIP FOR VIBRATION MITIGATION DURING SKIP FIRE OPERATION
    16.
    发明申请
    DRIVE TRAIN SLIP FOR VIBRATION MITIGATION DURING SKIP FIRE OPERATION 审中-公开
    用于在飞行员操作期间进行振动缓解的驱动滑轨

    公开(公告)号：US20160159364A1

    公开(公告)日：2016-06-09

    申请号：US15046175

    申请日：2016-02-17

    Applicant: Tula Technology, Inc.

    Inventor： Mark A. WILCUTTS ,  Xin YUAN ,  Joshua P. SWITKES ,  Steven E. CARLSON ,  John F. IMPEDUGLIA ,  John W. PARSELS

    IPC: B60W30/20 ,  B60W10/02 ,  B60W10/08

    CPC classification number: B60W30/20 ,  B60W10/026 ,  B60W10/08 ,  B60W2030/203 ,  B60W2710/025 ,  F02D11/105 ,  F02D41/00 ,  F02D41/0087 ,  F02D41/022 ,  F02D41/18 ,  F02D2250/18

    Abstract: A variety of methods and devices for mitigating power train vibration during skip fire operation of an engine are described. In one aspect, the slip of a drive train component (such as a torque converter clutch) is based at least in part upon a skip fire characteristic (such as firing fraction, selected firing sequence/pattern, etc.) during skip fire operation of an engine. The modulation of the drive train component slip can also be varied as a function of one or more engine operating parameters such as engine speed and/or a parameter indicative of the output of fired cylinders (such as mass air charge).

    Abstract translation: 描述了用于减轻发动机的跳火操作期间的动力传动系振动的各种方法和装置。 一方面，传动系部件（例如变矩器离合器）的滑动至少部分地基于跳过火焰运行期间的跳火特性（例如点火分数，选择的点火顺序/图案等） 一个引擎 传动系组件滑动的调制也可以作为一个或多个发动机操作参数（诸如发动机转速和/或指示燃烧气缸的输出的参数（例如大气压））的函数而变化。

    VALVE FAULT DETECTION
    17.
    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。

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