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32 条记录 (耗时 0.023 秒)

    Noise, vibration and harshness reduction in a skip fire engine control system
    4.
    发明授权
    Noise, vibration and harshness reduction in a skip fire engine control system 有权
    跳火消防车控制系统的噪音，振动和粗糙度降低

    公开(公告)号：US09512794B2

    公开(公告)日：2016-12-06

    申请号：US14992779

    申请日：2016-01-11

    申请人： Tula Technology, Inc.

    发明人： Louis J. Serrano ,  Xin Yuan ,  John W. Parsels ,  Mohammad R. Pirjaberi ,  Mark A. Wilcutts ,  Masaki Nagashima

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

    CPC分类号： F02D41/0087 ,  F02D41/0002 ,  F02D41/1498 ,  F02D41/3058 ,  F02D41/307 ,  F02D2041/0012

    摘要： 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.

    摘要翻译： 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。 确定通过能量存储/释放装置施加到动力系的平滑扭矩。 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。

    Engine diagnostics with skip fire control
    6.
    发明授权
    Engine diagnostics with skip fire control 有权
    发动机诊断与跳火控制

    公开(公告)号：US09212610B2

    公开(公告)日：2015-12-15

    申请号：US14206918

    申请日：2014-03-12

    申请人： Tula Technology Inc.

    发明人： Shikui Kevin Chen ,  Xin Yuan ,  Joshua P. Switkes ,  Steven E. Carlson ,  Mark A. Shost

    IPC分类号： F02D17/02 ,  F02D17/00 ,  F02D37/02 ,  F02D41/00 ,  F02D41/20

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

    摘要： 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.

    摘要翻译： 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。

    Transitory torque modifications using skip fire control
    7.
    发明授权
    Transitory torque modifications using skip fire control 有权
    使用跳火控制的瞬态扭矩修正

    公开(公告)号：US09120478B2

    公开(公告)日：2015-09-01

    申请号：US13963744

    申请日：2013-08-09

    申请人： Tula Technology, Inc.

    发明人： Steven E. Carlson ,  Xin Yuan ,  Joshua P. Switkes ,  Li-Chun Chien

    IPC分类号： B60W10/06 ,  B60W10/11 ,  B60W30/19 ,  F02D41/00 ,  F16H63/50 ,  F02D41/14 ,  F02P5/15 ,  F02P9/00 ,  F02D41/02

    CPC分类号： 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

    摘要： 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.

    摘要翻译： 描述了利用跳火技术快速满足对发动机的输出的瞬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。