公开(公告)号：US09067599B2

公开(公告)日：2015-06-30

申请号：US13785413

申请日：2013-03-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keith D. Van Maanen ,  Roger Joseph Rademacher ,  Craig J. Hawkins

IPC: B60W20/00 ,  F16H61/00 ,  B60W10/06 ,  B60W10/30 ,  B60W30/18

CPC classification number: B60W20/40 ,  B60W10/06 ,  B60W10/30 ,  B60W30/18018 ,  B60W2710/1083 ,  F16D48/066 ,  F16D48/08 ,  F16D2500/10412 ,  F16D2500/50224 ,  F16D2500/50883 ,  F16D2500/70217 ,  F16D2500/7027 ,  F16D2500/70282 ,  F16D2500/70406 ,  F16D2500/7109 ,  F16H61/0021 ,  Y10S903/902

Abstract: A vehicle includes an engine having autostart functionality, a source of fluid pressure when the engine is off, a flow control solenoid that outputs a variable clutch pressure, a transmission, an electric motor, and a controller. The transmission includes a clutch in fluid communication with the solenoid. The clutch applies via the clutch pressure to establish a first gear launch state. The motor is powered via a rechargeable energy storage system. The controller executes a method to transmit pulse width modulation (PWM) control signals to the solenoid upon detection of a set of conditions triggering the autostart event to lower clutch pressure to a first calibrated level. Restart of the engine is commanded, and the clutch pressure increases toward a second calibrated level while engine speed is increasing. The controller discontinues the PWM control signals and increases clutch pressure to line pressure when the input speed exceeds a calibrated threshold.

Abstract translation: 车辆包括具有自动启动功能的发动机，当发动机关闭时的流体压力源，输出可变离合器压力的流量控制螺线管，变速器，电动马达和控制器。 变速器包括与螺线管流体连通的离合器。 离合器通过离合器压力施加以建立第一档发射状态。 电机通过可再充电能量存储系统供电。 控制器执行一种方法，用于在检测到触发自动启动事件的一组条件以将离合器压力降低到第一校准水平时，向螺线管发送脉宽调制（PWM）控制信号。 指示发动机的重新启动，当发动机转速增加时，离合器压力向第二校准水平增加。 当输入速度超过校准阈值时，控制器停止PWM控制信号，并将离合器压力提高到管路压力。

公开(公告)号：US20140257607A1

公开(公告)日：2014-09-11

申请号：US13785413

申请日：2013-03-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Keith D. Van Maanen ,  Roger Joseph Rademacher ,  Craig J. Hawkins

IPC: B60W20/00

CPC classification number: B60W20/40 ,  B60W10/06 ,  B60W10/30 ,  B60W30/18018 ,  B60W2710/1083 ,  F16D48/066 ,  F16D48/08 ,  F16D2500/10412 ,  F16D2500/50224 ,  F16D2500/50883 ,  F16D2500/70217 ,  F16D2500/7027 ,  F16D2500/70282 ,  F16D2500/70406 ,  F16D2500/7109 ,  F16H61/0021 ,  Y10S903/902

Abstract: A vehicle includes an engine having autostart functionality, a source of fluid pressure when the engine is off, a flow control solenoid that outputs a variable clutch pressure, a transmission, an electric motor, and a controller. The transmission includes a clutch in fluid communication with the solenoid. The clutch applies via the clutch pressure to establish a first gear launch state. The motor is powered via a rechargeable energy storage system. The controller executes a method to transmit pulse width modulation (PWM) control signals to the solenoid upon detection of a set of conditions triggering the autostart event to lower clutch pressure to a first calibrated level. Restart of the engine is commanded, and the clutch pressure increases toward a second calibrated level while engine speed is increasing. The controller discontinues the PWM control signals and increases clutch pressure to line pressure when the input speed exceeds a calibrated threshold.

Abstract translation: 车辆包括具有自动启动功能的发动机，当发动机关闭时的流体压力源，输出可变离合器压力的流量控制螺线管，变速器，电动马达和控制器。 变速器包括与螺线管流体连通的离合器。 离合器通过离合器压力施加以建立第一档发射状态。 电机通过可再充电能量存储系统供电。 控制器执行一种方法，用于在检测到触发自动启动事件的一组条件以将离合器压力降低到第一校准水平时，向螺线管发送脉宽调制（PWM）控制信号。 指示发动机的重新启动，当发动机转速增加时，离合器压力向第二校准水平增加。 当输入速度超过校准阈值时，控制器停止PWM控制信号，并将离合器压力提高到管路压力。