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    AVERAGING FILTER FOR SKIP FIRE ENGINE OPERATION
    6.
    发明申请
    AVERAGING FILTER FOR SKIP FIRE ENGINE OPERATION 有权
    用于飞行火灾发动机运行的平均过滤器

    公开(公告)号：US20160326969A1

    公开(公告)日：2016-11-10

    申请号：US14704747

    申请日：2015-05-05

    Applicant: Tula Technology Inc.

    Inventor： Louis J. SERRANO ,  Mohammad R. PIRJABERI ,  Charles H. LOUCKS

    IPC: F02D17/02 ,  G01M15/04 ,  F02D41/18

    CPC classification number: F02D17/02 ,  F02D41/0087 ,  F02D41/0097 ,  F02D41/18 ,  F02D2041/0012 ,  F02D2041/1422 ,  F02D2041/1432 ,  F02D2041/286

    Abstract: A variety of methods, devices and filters are described that are suitable for averaging measured power train operating parameters over a period that varies as a function of an engine cylinder firing characteristic such as a current operational firing fraction or firing sequence. The averaged measured operating parameter may be used in a variety of different engine control related functions, calculations and/or operations. The described techniques and devices are particularly well suited for use during skip fire operation of an engine.

    Abstract translation: 描述了各种各样的方法，装置和过滤器，其适用于在作为发动机气缸点火特性（例如当前的操作点火分数或点火顺序）的函数变化的周期内平均测量的动力系运行参数。 平均测量的操作参数可用于各种不同的发动机控制相关功能，计算和/或操作。 所描述的技术和装置特别适用于在发动机的跳火操作期间使用。

    NOISE, VIBRATION AND HARSHNESS REDUCTION IN A SKIP FIRE ENGINE CONTROL SYSTEM
    7.
    发明申请
    NOISE, VIBRATION AND HARSHNESS REDUCTION IN A SKIP FIRE ENGINE CONTROL SYSTEM 有权
    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：US20160201586A1

    公开(公告)日：2016-07-14

    申请号：US14992779

    申请日：2016-01-11

    Applicant: Tula Technology, Inc.

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

    IPC: F02D41/00 ,  F02D41/14

    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。

    FIRING FRACTION MANAGEMENT IN SKIP FIRE ENGINE CONTROL
    8.
    发明申请
    FIRING FRACTION MANAGEMENT IN SKIP FIRE ENGINE CONTROL 审中-公开

    公开(公告)号：US20200080500A1

    公开(公告)日：2020-03-12

    申请号：US16680030

    申请日：2019-11-11

    Applicant: Tula Technology, Inc.

    Inventor： Mohammad R. PIRJABERI ,  Adya S. TRIPATHI ,  Louis J. SERRANO

    IPC: F02D17/02 ,  F02D13/06 ,  F02D41/00

    Abstract: Skip fire engine control using a first order sigma delta based firing controller is described. An engine controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. The operational firing fraction is selected from a set of available firing fractions. The engine controller uses a first order sigma delta based converter to direct working cycle firings in a skip fire manner that delivers the selected firing fraction. The converter includes or functions substantially equivalent to a first order sigma delta converter and may be implemented any of: algorithmically using a processor; using digital, analog or hybrid components; using a lookup table; or using other appropriate techniques. In some embodiments firing decisions are made on a working cycle by working cycle basis. The described approach may be used in gasoline engines, diesel engines, turbocharged or supercharged engines, or others.

    ENGINE TORQUE SMOOTHING
    9.
    发明申请
    ENGINE TORQUE SMOOTHING 审中-公开

    公开(公告)号：US20190178180A1

    公开(公告)日：2019-06-13

    申请号：US16278075

    申请日：2019-02-16

    Applicant: Tula Technology, Inc.

    Inventor： Mohammad R. PIRJABERI ,  Kian EISAZADEH-FAR ,  Steven E. CARLSON ,  Louis J. SERRANO

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

    Abstract: Methods, devices, estimators, controllers and algorithms are described for estimating the torque profile of an engine and/or for controlling torque applied to a powertrain by one or more devices other than the engine itself to manage the net torque applied by the engine and other device(s) in manners that reduce undesirable NVH. The described approaches are particularly well suitable for use in hybrid vehicles in which the engine is operated in a skip fire or other dynamic firing level modulation manner—however they may be used in a variety of other circumstances as well. In some embodiments, the hybrid vehicle includes a motor/generator that applies the smoothing torque.

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