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    FIRING FRACTION MANAGEMENT IN SKIP FIRE ENGINE CONTROL
    73.
    发明申请
    FIRING FRACTION MANAGEMENT IN SKIP FIRE ENGINE CONTROL 有权
    飞行火灾发动机控制中的火力分配管理

    公开(公告)号：US20170067401A1

    公开(公告)日：2017-03-09

    申请号：US15357398

    申请日：2016-11-21

    Applicant: Tula Technology, Inc.

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

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

    CPC classification number: F02D17/02 ,  F02D13/06 ,  F02D37/02 ,  F02D41/0087 ,  F02D2041/286 ,  F02D2200/101

    Abstract: In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the skip fire controller is arranged to select a base firing fraction that has a repeating firing cycle length that will repeat at least a designated number of times per second at the current engine speed. Such an arrangement can be helpful in reducing the occurrence of undesirable vibrations.

    Abstract translation: 在各种描述的实施例中，跳过火控制用于传递期望的发动机输出。 控制器确定跳过火焰射击分数以及（适当地）适合于递送请求的输出的相关联的引擎设置。 在一个方面，跳过火控制器布置成选择具有重复的发射周期长度的基本点火分数，其将以当前发动机转速每秒重复至少指定次数。 这种布置可以有助于减少不期望的振动的发生。

    NOISE, VIBRATION AND HARSHNESS REDUCTION IN A SKIP FIRE ENGINE CONTROL SYSTEM
    74.
    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。

    ENGINE BRAKING CONTROLLER
    77.
    发明申请
    ENGINE BRAKING CONTROLLER 有权
    发动机制动控制器

    公开(公告)号：US20140034010A1

    公开(公告)日：2014-02-06

    申请号：US13953615

    申请日：2013-07-29

    Applicant: Tula Technology, Inc.

    Inventor： Louis J. SERRANO ,  Steven E. CARLSON ,  Joshua P. SWITKES ,  Ronald D. YUILLE

    IPC: F02D17/02

    CPC classification number: F02D17/02 ,  F02D13/0203 ,  F02D13/04 ,  F02D41/0005 ,  F02D41/0087 ,  F02D41/123

    Abstract: In one aspect of the invention, an engine is operated in a skip cylinder engine braking mode. In the skip cylinder engine braking mode, selected working cycles of selected working chambers are deactivated. Other selected working cycles of the selected working chambers are operated in a braking mode. Accordingly, individual working chambers are sometimes deactivated and sometimes operated in the braking mode while the engine is operating in the skip cylinder engine braking mode. Various methods for cylinder control are described, which improve fuel economy, catalytic converter performance, and vehicle NVH characteristics.

    Abstract translation: 在本发明的一个方面，发动机以跳过气缸发动机制动模式操作。 在跳过气缸发动机制动模式下，所选择的工作室的选定工作循环被停用。 所选择的工作室的其他选定的工作循环在制动模式下操作。 因此，当发动机以跳过气缸发动机制动模式运行时，单个工作室有时被停用并且有时在制动模式下操作。 描述了用于气缸控制的各种方法，其提高燃料经济性，催化转化器性能和车辆NVH特性。

    USING VALVE TIMING TO IMPROVE ENGINE ACOUSTICS
    78.
    发明申请
    USING VALVE TIMING TO IMPROVE ENGINE ACOUSTICS 审中-公开
    使用阀门时间来改善发动机声学

    公开(公告)号：US20130291816A1

    公开(公告)日：2013-11-07

    申请号：US13886107

    申请日：2013-05-02

    Applicant: TULA TECHNOLOGY, INC.

    Inventor： Louis J. SERRANO ,  Joshua P. SWITKES

    IPC: F01L1/344

    CPC classification number: F01L1/344 ,  F02D13/0215 ,  Y02T10/18

    Abstract: A method for improving the operation of an internal combustion engine implementing cylinder deactivation is described. Generally, the pattern of combustion events that are fired and skipped together with the geometry of the exhaust and/or intake system can create unpleasant acoustic issues. By slightly altering the timing of the cylinder intake and exhaust valves, these acoustic issues can be mitigated. The valve timing can be altered on a combustion event by combustion event basis. Alternatively, valve timing for different groups of cylinders can be modified together.

    Abstract translation: 描述了一种改进执行气缸停用的内燃机的操作的方法。 通常，与排气和/或进气系统的几何形状一起燃烧和跳过的燃烧事件的模式可能产生不愉快的声学问题。 通过稍微改变气缸进气和排气门的时间，可以减轻这些声学问题。 燃烧事件可根据燃烧事件改变气门正时。 或者，可以一起修改不同组的气缸的气门正时。

    LOOK-UP TABLE BASED SKIP FIRE ENGINE CONTROL
    79.
    发明申请
    LOOK-UP TABLE BASED SKIP FIRE ENGINE CONTROL 有权
    基于查看表的跳汰火花发动机控制

    公开(公告)号：US20130289853A1

    公开(公告)日：2013-10-31

    申请号：US13774134

    申请日：2013-02-22

    Applicant: TULA TECHNOLOGY, INC.

    Inventor： Louis J. SERRANO

    IPC: F02D45/00

    CPC classification number: F02D45/00 ,  F02D11/105 ,  F02D41/0087

    Abstract: A variety of skip fire engine controllers and control methods are described that utilize look-up tables, state machines, or other data structures to determine the sequence or ordering of skip-fire firings. In one aspect, a skip fire engine controller utilizes a look-up table to determine when firings are appropriate to deliver a desired engine output. In some embodiments, a firing timing controller tracks a value indicative of the portion of a firing that has been requested, but not yet directed and such information is utilized in the determination of the timing of the firings. The accumulator value is particularly useful when transitioning between different requested firing fractions.

    Abstract translation: 描述了使用查找表，状态机或其他数据结构来确定跳火发射的顺序或排序的各种跳火消防车控制器和控制方法。 在一个方面，跳跃式消防车控制器利用查找表来确定何时发射适合于发送期望的发动机输出。 在一些实施例中，点火定时控制器跟踪指示已经被请求但还没有指示的点火部分的值，并且这种信息用于确定发射的定时。 累加器值在不同要求的点火分数之间转换时特别有用。

    CONTROL OF A PARTIAL CYLINDER DEACTIVATION ENGINE
    80.
    发明申请
    CONTROL OF A PARTIAL CYLINDER DEACTIVATION ENGINE 有权
    部分气缸停止发动机的控制

    公开(公告)号：US20130255626A1

    公开(公告)日：2013-10-03

    申请号：US13799389

    申请日：2013-03-13

    Applicant: TULA TECHNOLOGY, INC.

    Inventor： Louis J. SERRANO

    IPC: F02D41/00

    CPC classification number: F02D41/0087 ,  F02D2250/21

    Abstract: A variety of methods and arrangements for managing transitions between operating states for an engine are described. In one aspect, an engine is operated in a particular operating state. A transition is made to another operating state. During that transition, the engine is operated in a skip fire manner.

    Abstract translation: 描述了用于管理用于发动机的操作状态之间的转换的各种方法和布置。 在一个方面，发动机在特定的操作状态下操作。 转换到另一个操作状态。 在过渡期间，发动机以跳火方式运行。

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