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    SYSTEMS AND METHODS FOR MAINTAINING A SUBSTANTIALLY STABLE ENGINE IDLE SPEED AFTER A GARAGE SHIFT
    1.
    发明申请
    SYSTEMS AND METHODS FOR MAINTAINING A SUBSTANTIALLY STABLE ENGINE IDLE SPEED AFTER A GARAGE SHIFT 有权
    保存发动机空载后的发动机空载速度的系统和方法

    公开(公告)号：US20140257651A1

    公开(公告)日：2014-09-11

    申请号：US13789883

    申请日：2013-03-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Junhong Dai ,  Wenbo Wang ,  Krishnendu Kar ,  Leon Cribbins

    IPC: B60W10/06 ,  B60W10/11

    CPC classification number: B60W10/06 ,  B60W10/023 ,  B60W10/11 ,  B60W10/115 ,  B60W30/18054 ,  B60W2510/0642 ,  B60W2510/102 ,  B60W2710/065 ,  B60W2710/0666 ,  F02D31/001 ,  F02D31/008 ,  F02D41/022 ,  F02D41/023 ,  F02D41/16 ,  F02D2250/18 ,  F02D2400/12

    Abstract: A method of maintaining a substantially stable engine speed after a garage shift of an automatic transmission includes identifying a moment when a load from the automatic transmission is applied to an engine via a torque converter during the garage shift based on a first turbine speed change with respect to a reference engine speed change and a second turbine speed change with respect to an actual engine speed change. The method further includes generating a feed forward torque command based on a turbine speed decrement after identifying the moment when the load from the automatic transmission is applied to the engine, and controlling the engine based on the feed forward torque command to maintain a substantially stable engine speed after the garage shift.

    Abstract translation: 一种在自动变速箱的车库换挡之后维持发动机转速基本上稳定的方法包括：鉴于在车库换档过程中基于相对于第一涡轮机转速变化的来自自动变速器的负载经由变矩器施加到发动机的时刻 相对于实际发动机转速变化的参考发动机速度变化和第二涡轮机速度变化。 该方法还包括在识别出来自自动变速器的负载被施加到发动机的时刻之后基于涡轮减速度生成前馈转矩指令，并且基于前馈转矩指令来控制发动机，以维持基本稳定的发动机 车库换乘后的速度。

    Adaptive engine speed control to prevent engine from roll and stall
    3.
    发明授权
    Adaptive engine speed control to prevent engine from roll and stall 有权
    自适应发动机转速控制，防止发动机滚动和失速

    公开(公告)号：US09074537B2

    公开(公告)日：2015-07-07

    申请号：US13673181

    申请日：2012-11-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wenbo Wang ,  Thomas C. Pelton ,  Alfred E. Spitza, Jr. ,  Timothy J. Braman ,  Matthew M. Manning ,  Krishnendu Kar

    IPC: F02D41/08 ,  F02D31/00

    CPC classification number: F02D31/003 ,  F02D2250/18 ,  F02D2250/22

    Abstract: An adaptive engine speed control system includes an idle condition module that determines whether the engine is idling and determines whether an actual engine speed is different than a desired engine speed. The desired engine speed corresponds to a commanded engine speed. A torque reserve determination module adjusts at least one of a torque reserve and the desired engine speed based on the determination of whether the engine is idling and the determination that the actual engine speed differs from the desired engine speed. The torque reserve corresponds to a quantity of torque reserved to respond to an anticipated future load on the engine.

    Abstract translation: 自适应发动机速度控制系统包括空转状态模块，其确定发动机是否空转，并确定实际的发动机转速是否不同于期望的发动机转速。 所需的发动机转速对应于指令的发动机转速。 扭矩储备确定模块基于发动机是否空转以及实际发动机转速是否与期望发动机转速不同的判定来调节转矩储备和期望发动机转速中的至少一个。 扭矩储备对应于保留用于响应发动机上预期未来负荷的扭矩量。

    Feed-forward engine idle speed control
    4.
    发明授权
    Feed-forward engine idle speed control 有权
    前馈发动机怠速控制

    公开(公告)号：US09056604B2

    公开(公告)日：2015-06-16

    申请号：US13951921

    申请日：2013-07-26

    Applicant: GM Global Technology Operations LLC

    Inventor： Ronald F. Lochocki, Jr. ,  Krishnendu Kar ,  Colin Hultengren ,  Leon Cribbins

    IPC: B60W10/02 ,  B60W10/06 ,  B60W10/11

    CPC classification number: B60W10/06 ,  B60W10/02 ,  B60W10/11 ,  B60W10/113 ,  B60W30/18027 ,  B60W30/18063 ,  B60W2050/0012 ,  B60W2510/02 ,  B60W2510/0642 ,  B60W2540/10 ,  B60W2540/12 ,  B60W2710/025 ,  B60W2710/027 ,  B60W2710/0605 ,  B60W2710/0644 ,  B60W2710/0666

    Abstract: A vehicle includes an engine, transmission, engine control module (ECM), and transmission control module (TCM). The transmission includes an input member and an input clutch which selectively connects a crankshaft of the engine to the input member. The TCM identifies a target clutch torque of the input clutch during a creep maneuver of the vehicle, and communicates the identified target clutch torque to the ECM. The ECM maintains engine idle speed at a threshold level through the creep maneuver and a requested launch using the target clutch torque as a feed-forward term. A method includes identifying a target clutch torque of the input clutch during a creep maneuver, and communicating the identified target clutch torque to the ECM. The idle speed is maintained at a threshold level by the ECM through the creep maneuver and a detected launch using the target clutch torque as a feed-forward idle speed control term.

    Abstract translation: 车辆包括发动机，变速器，发动机控制模块（ECM）和变速器控制模块（TCM）。 变速器包括输入构件和选择性地将发动机的曲轴连接到输入构件的输入离合器。 TCM在车辆的爬行动作期间识别输入离合器的目标离合器扭矩，并将所识别的目标离合器扭矩传递到ECM。 ECM通过蠕变机动和使用目标离合器扭矩作为前馈项的请求发射将发动机怠速转速保持在阈值水平。 一种方法包括在蠕变机动期间识别输入离合器的目标离合器扭矩，以及将所识别的目标离合器扭矩传送到ECM。 怠速由ECM通过蠕变机动维持在阈值水平，并且使用目标离合器扭矩检测到的启动作为前馈空转速度控制项。

    ENGINE CONTROL SYSTEMS AND METHODS FOR VEHICLE LAUNCH
    5.
    发明申请
    ENGINE CONTROL SYSTEMS AND METHODS FOR VEHICLE LAUNCH 有权
    发动机控制系统和车辆起动方法

    公开(公告)号：US20140081559A1

    公开(公告)日：2014-03-20

    申请号：US13716843

    申请日：2012-12-17

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Krishnendu Kar

    IPC: F02D28/00

    CPC classification number: F02D41/022 ,  F02D13/0219 ,  F02D13/06 ,  F02D28/00 ,  F02D29/02 ,  F02D41/0002 ,  F02D41/0007 ,  F02D41/0225 ,  F02D41/1497 ,  F02D2041/001 ,  F02D2041/0017 ,  F02D2200/602 ,  F02D2250/18 ,  F02M26/05 ,  Y02T10/144 ,  Y02T10/18 ,  Y02T10/42

    Abstract: A driver request module determines a driver torque request based on an accelerator pedal position, a first difference between a target engine speed and a transmission input speed, and a second difference between the transmission input speed and a measured engine speed. A request generating module generates first and second torque requests based on the driver torque request. An engine speed control module generates third and fourth torque requests based on a target engine speed and the first and second differences. Based on a mode signal: a first selection module sets a fifth torque request to one of the first and third torque requests; and a second selection module sets a sixth torque request to one of the second and fourth torque requests. An adjusting module selectively adjusts an engine operating parameter based on at least one of the fifth and sixth torque requests.

    Abstract translation: 驱动器请求模块基于加速器踏板位置，目标发动机速度和变速器输入速度之间的第一差异以及变速器输入速度和测量的发动机速度之间的第二差异来确定驾驶员扭矩请求。 请求生成模块基于驾驶员扭矩请求产生第一和第二扭矩请求。 发动机转速控制模块基于目标发动机转速和第一和第二差异产生第三和第四转矩请求。 基于模式信号：第一选择模块将第五转矩请求设置为第一和第三转矩请求之一; 并且第二选择模块将第六转矩请求设置为第二和第四转矩请求之一。 调整模块基于第五和第六转矩请求中的至少一个选择性地调整发动机操作参数。

    Engine control systems and methods for accelerator pedal tip-out
    6.
    发明授权
    Engine control systems and methods for accelerator pedal tip-out 有权
    发动机控制系统和加速踏板推出方法

    公开(公告)号：US09284902B2

    公开(公告)日：2016-03-15

    申请号：US13968706

    申请日：2013-08-16

    Applicant: GM Global Technology Operations LLC

    Inventor： Bret J. Keller ,  Krishnendu Kar

    IPC: F02D13/00 ,  F02D41/02 ,  F02D28/00 ,  F02D41/12 ,  F02D37/02 ,  F02D41/00 ,  F02D13/02

    CPC classification number: F02D41/0215 ,  F02D13/00 ,  F02D13/0219 ,  F02D28/00 ,  F02D37/02 ,  F02D41/0007 ,  F02D41/0087 ,  F02D41/12 ,  F02D2041/001 ,  F02D2250/21

    Abstract: A difference module determines a difference between an engine speed and a transmission input shaft speed. A state control module sets a signal to a first state when a driver releases an accelerator pedal and selectively transitions the signal from the first state to a second state when the difference is less than zero. An immediate torque request module decreases an engine torque request when the signal is in the first state and selectively increases the engine torque request when the signal is in the second state. At least one of: a spark control module that selectively adjusts spark timing based on the engine torque request; and a fuel control module that selectively adjusts fueling based on the engine torque request.

    Abstract translation: 差模块确定发动机转速和变速器输入轴转速之间的差异。 当驾驶员释放加速器踏板时，状态控制模块将信号设置为第一状态，并且当该差小于零时，选择性地将信号从第一状态转换到第二状态。 当信号处于第一状态时，立即扭矩请求模块减小发动机扭矩请求，并且当信号处于第二状态时选择性地增加发动机转矩请求。 火花控制模块中的至少一个，其基于发动机转矩请求选择性地调节火花正时; 以及燃料控制模块，其基于发动机转矩请求选择性地调节燃料供给。

    AUTOMATIC TRANSMISSION INPUT CLUTCH CONTROL
    7.
    发明申请
    AUTOMATIC TRANSMISSION INPUT CLUTCH CONTROL 有权
    自动变速箱输入离合器控制

    公开(公告)号：US20130311055A1

    公开(公告)日：2013-11-21

    申请号：US13767320

    申请日：2013-02-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Christopher E. Whitney ,  Klaus Pochner ,  Colin Hultengren ,  Krishnendu Kar

    IPC: B60W10/06 ,  B60W10/02

    CPC classification number: B60W30/18027 ,  B60W10/02 ,  B60W10/06 ,  B60W30/18063 ,  B60W2710/065 ,  B60W2710/0666 ,  B60W2720/106 ,  Y10T477/639 ,  Y10T477/6418

    Abstract: A method of controlling the performance of a vehicle from a stationary condition includes operating a vehicle powertrain in a creep mode following the disengagement of a driver-operated braking device; and operating the vehicle powertrain in a launch mode following an engagement of a driver-operated acceleration device subsequent to the disengagement of the driver-operated braking device. Operating a vehicle powertrain in a creep mode includes: applying a friction clutch to couple an engine crankshaft of the vehicle powertrain with an input shaft of the transmission; determining a torque command to accelerate the vehicle powertrain at a predetermined rate; providing the torque command to an engine controller to controllably increase the input torque to the transmission; and operating a closed loop engine speed control module to prevent the crankshaft speed from slowing below a predetermined engine idle speed.

    Abstract translation: 一种从静止状态控制车辆的性能的方法包括在驱动器操作的制动装置脱离之后以蠕变模式操作车辆动力传动系; 以及在驱动器操作的制动装置的分离之后驾驶员操作的加速装置的接合之后，以发射模式操作车辆动力系。 以蠕变模式操作车辆动力传动系统包括：施加摩擦离合器以将车辆动力系的发动机曲轴与变速器的输入轴联接; 确定以预定速率加速所述车辆动力系的转矩指令; 向发动机控制器提供转矩指令以可控地增加对变速器的输入转矩; 并且操作闭环发动机速度控制模块以防止曲轴速度在预定的发动机怠速下降低。

    TORQUE CONTROL OF A POWER-PLANT FOR LAUNCHING A VEHICLE WITH A MANUAL TRANSMISSION
    8.
    发明申请
    TORQUE CONTROL OF A POWER-PLANT FOR LAUNCHING A VEHICLE WITH A MANUAL TRANSMISSION 有权
    用手动变速器启动车辆的动力装置的转矩控制

    公开(公告)号：US20170051695A1

    公开(公告)日：2017-02-23

    申请号：US14828007

    申请日：2015-08-17

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Krishnendu Kar ,  Leon Cribbins ,  Thomas Weglarz

    IPC: F02D41/10 ,  F02D41/08 ,  F02D41/14 ,  F02D41/00 ,  F02D41/02 ,  F02D11/10

    CPC classification number: F02D41/10 ,  F02D11/10 ,  F02D11/105 ,  F02D11/106 ,  F02D31/003 ,  F02D41/0097 ,  F02D41/022 ,  F02D41/08 ,  F02D41/1402 ,  F02D2041/1409 ,  F02D2200/101 ,  F02D2200/1012 ,  F02D2250/18

    Abstract: A method of controlling torque output of a power-plant during launch of a vehicle having a transmission with a manually-operated clutch is disclosed. The power-plant torque is varied based on clutch pedal and throttle pedal positions using a proportional-integral-derivative (PID) control logic in an electronic fuel control system. The method includes setting power-plant idle speed, detecting clutch engagement without application of the throttle pedal, and raising power-plant torque after clutch engagement is detected. In each PID feedback loop, the method includes detecting actual power-plant speed and a rate of change in actual power-plant speed, and adjusting the raised power-plant torque in response to the determined rate of change in actual power-plant speed. The method additionally includes determining a difference between the set idle speed and the actual power-plant speed, and maintaining constant power-plant torque, if the difference between the set idle and actual power-plant speeds is within an acceptable range.

    Abstract translation: 公开了一种在具有手动离合器的变速器的车辆发射期间控制发电厂的扭矩输出的方法。 在电子燃料控制系统中，使用比例积分微分（PID）控制逻辑，电厂扭矩基于离合器踏板和油门踏板位置而变化。 该方法包括设置发电厂怠速，检测离合器接合而不施加油门踏板，并且在检测到离合器接合之后提高发电厂扭矩。 在每个PID反馈回路中，该方法包括检测实际发电厂速度和实际发电厂转速的变化率，并根据确定的实际发电厂转速变化率来调整升高的发电厂转矩。 该方法还包括确定设定怠速和实际发电厂速度之间的差异，并且如果设定的怠速和实际电厂速度之间的差在可接受的范围内，则保持恒定的发电厂转矩。

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