公开(公告)号：US10697539B2

公开(公告)日：2020-06-30

申请号：US15969076

申请日：2018-05-02

Applicant: GM Global Technology Operations LLC

Inventor： Steven P. Moorman

IPC: F16H61/14 ,  F16D48/06

Abstract: A system for determining a torque converter clutch is stuck in an engaged position includes a control module, an engine speed sensor, and a transmission speed sensor. The control module evaluates the torque converter clutch by determining a value of a torque converter clutch command. The torque converter clutch command indicates a position of the torque converter clutch. In response to determining that the value of the torque converter clutch command indicates the disengaged position, the control module calculates accumulated slip based on the transmission speed and the engine speed during an evaluation time. In response to determining the evaluation time is complete, the control module compares the accumulated slip with a calibrated threshold of slip. In response to the accumulated slip being less than or equal to the calibrated threshold of slip, the control module determines the torque converter clutch is stuck in the engaged position.

公开(公告)号：US20190338850A1

公开(公告)日：2019-11-07

申请号：US15969076

申请日：2018-05-02

Applicant: GM Global Technology Operations LLC

Inventor： Steven P. Moorman

IPC: F16H61/14 ,  F16D48/06

Abstract: A system for determining a torque converter clutch is stuck in an engaged position includes a control module, an engine speed sensor, and a transmission speed sensor. The control module evaluates the torque converter clutch by determining a value of a torque converter clutch command. The torque converter clutch command indicates a position of the torque converter clutch. In response to determining that the value of the torque converter clutch command indicates the disengaged position, the control module calculates accumulated slip based on the transmission speed and the engine speed during an evaluation time. In response to determining the evaluation time is complete, the control module compares the accumulated slip with a calibrated threshold of slip. In response to the accumulated slip being less than or equal to the calibrated threshold of slip, the control module determines the torque converter clutch is stuck in the engaged position.

公开(公告)号：US10047860B2

公开(公告)日：2018-08-14

申请号：US15171110

申请日：2016-06-02

Applicant: GM Global Technology Operations LLC

Inventor： Minh Q. Truong ,  Bret M. Olson ,  Chinar S. Ghike ,  Craig J. Hawkins ,  Steven P. Moorman ,  Paul G. Otanez

IPC: F16H59/00 ,  F16H61/00 ,  F16H63/00 ,  F16H61/662 ,  F16H59/18

Abstract: A target module determines a target ratio between a speed of an input shaft and a speed of an output shaft of a continuously variable transmission (CVT) based on an accelerator pedal position. A maximum rate of change (ROC) module determines a maximum ROC of the target ratio. A switching valve control module, based on a comparison of the maximum ROC and a ROC of the target ratio, selectively actuates a switching valve of the CVT one of (i) from a closed position to an open position and (ii) from the open position to the closed position. The switching valve prevents transmission fluid flow through a flow path between a transmission fluid pump and a pressure regulator valve of the CVT when the switching valve is in the closed position. The switching valve allows transmission fluid flow through the flow path when the switching valve is in the open position.

公开(公告)号：US09383007B2

公开(公告)日：2016-07-05

申请号：US14462807

申请日：2014-08-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Steven P. Moorman ,  Todd R. Berger ,  Orson S. Wang ,  Dong Da

IPC: F16H61/16 ,  F16H61/12 ,  F16H59/44

CPC classification number: F16H61/16 ,  F16H59/12 ,  F16H59/44 ,  F16H61/12 ,  F16H63/42 ,  F16H2061/1232 ,  F16H2061/1292 ,  F16H2061/168

Abstract: A vehicle includes an engine, a transmission with a shift valve, an alternator, an auxiliary battery, a voltage sensor operable to measure an auxiliary voltage, and an electronic transmission range selection (ETRS) system. The ETRS system includes a controller, and also an electronic range selector device that transmits an electronic range request signal to the controller to request the shift of the transmission to a requested operating range. The controller executes a method to predict a loss of auxiliary power aboard the vehicle, and to control an action of the vehicle in response to the predicted loss of auxiliary power. The electronic range request signal is received from the range selector device and auxiliary voltage. The controller calculates a slope of a decrease in the measured auxiliary voltage. A control action is executed with the alternator is in the charging state and the calculated slope exceeds a calibrated slope threshold.

Abstract translation: 车辆包括发动机，具有换档阀的变速器，交流发电机，辅助电池，可操作以测量辅助电压的电压传感器和电子变速器范围选择（ETRS）系统。 ETRS系统包括控制器以及电子量程选择器装置，其将电子范围请求信号发送到控制器，以请求将传输转移到所请求的操作范围。 控制器执行一种方法来预测车辆上的辅助动力的损失，并且响应于预计的辅助动力的损失来控制车辆的动作。 从量程选择装置和辅助电压接收电子范围请求信号。 控制器计算测量的辅助电压下降的斜率。 在交流发电机处于充电状态并且所计算的斜率超过校准斜率阈值的情况下执行控制动作。

公开(公告)号：US11085532B2

公开(公告)日：2021-08-10

申请号：US16299633

申请日：2019-03-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Steven P. Moorman ,  Christopher J. Weingartz

IPC: F15B11/00 ,  F16H61/30 ,  F15B13/02

Abstract: A hydraulic system may include an electrohydraulic control valve disposed in fluid communication between a source of pressured fluid and a hydraulic actuator. The hydraulic system may be controlled to correct for offset errors between a target actuator pressure and a current actuator pressure output from the control valve, without amplifying pressure oscillations in the fluid between the control valve and the hydraulic actuator.

公开(公告)号：US20210061063A1

公开(公告)日：2021-03-04

申请号：US16551064

申请日：2019-08-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Min Sun ,  Yiran Hu ,  David E. Edwards ,  Jun Chen ,  Insu Chang ,  Steven P. Moorman

IPC: B60H1/00

Abstract: Systems and methods are provided for management of a thermal system. A system for thermal management includes a thermal system with fluid conduits. A sensor is disposed to monitor an input parameter state of the thermal system. An actuator is configured to vary a flow in the fluid conduits. A controller is configured to receive a signal representative of the input parameter state; process an actuator state through a flow model of the thermal system to obtain an existing flow in the fluid conduits; process the existing flow through a thermal model of the thermal system to determine an input that reduces an error between a desired parameter state and the input parameter state; process the input through an inverse flow model to convert the input to a desired actuator state; and position the actuator in the desired actuator state.

公开(公告)号：US09970540B2

公开(公告)日：2018-05-15

申请号：US15171016

申请日：2016-06-02

Applicant: GM Global Technology Operations LLC

Inventor： Minh Q. Truong ,  Bret M. Olson ,  Steven P. Moorman ,  Mohamed O. Egal

IPC: F16H59/00 ,  F16H61/00 ,  F16H63/00 ,  F16H61/662

CPC classification number: F16H61/66272 ,  F16H61/0021

Abstract: A switching valve control module selectively actuates a switching valve of a continuously variable transmission (CVT) either: (i) from a closed position to an open position; or (ii) from the open position to the closed position. The switching valve prevents and allows transmission fluid flow through a flow path between a transmission fluid pump and a pressure regulator valve of the CVT when the switching valve is in the closed position and the open position, respectively. An adjustment determination module determines a pressure adjustment when the switching valve actuates. A target pressure module determines a target pressure output from the pressure regulator valve. An adjusting module determines an adjusted target pressure based on the pressure adjustment and the target pressure. A regulator valve control module controls opening of the pressure regulator valve based on the adjusted target pressure.

公开(公告)号：US09435431B1

公开(公告)日：2016-09-06

申请号：US14643655

申请日：2015-03-10

Applicant: GM Global Technology Operations LLC

Inventor： Philip C. Lundberg ,  Steven P. Moorman

IPC: F16D35/00 ,  F16H61/14 ,  F16H61/12 ,  F16H61/662 ,  F16H61/00 ,  F16H61/02 ,  F16H45/00

CPC classification number: F16H61/14 ,  F16H45/00 ,  F16H61/0021 ,  F16H61/0267 ,  F16H61/12 ,  F16H61/66 ,  F16H2061/1252

Abstract: A hydraulic control system with clutch and torque converter control for a CVT includes a pressure regulator subsystem, a cooler subsystem, a manual valve assembly, and a torque converter control valve assembly connected to the torque converter clutch (TCC) and the cooler subsystem. A boost valve assembly is connected to the pressure regulator subsystem, the manual valve assembly, and the torque converter clutch control valve assembly. A clutch control solenoid is configured to move the boost valve to the boost position and the control valve to the release position and to control a pressure of the hydraulic fluid provided to the manual valve assembly. A TCC control solenoid is configured to move the boost valve to the boost position and to control a pressure of the hydraulic fluid provided to the torque converter control valve assembly.

Abstract translation: 具有用于CVT的离合器和变矩器控制的液压控制系统包括压力调节器子系统，冷却器子系统，手动阀组件和连接到变矩器离合器（TCC）和冷却器子系统的变矩器控制阀组件。 升压阀组件连接到压力调节器子系统，手动阀组件和变矩器离合器控制阀组件。 离合器控制螺线管构造成将升压阀移动到升压位置，并将控制阀移动到释放位置，并且控制提供给手动阀组件的液压流体的压力。 TCC控制螺线管被配置为将升压阀移动到升压位置并且控制提供给变矩器控制阀组件的液压流体的压力。

公开(公告)号：US09322470B2

公开(公告)日：2016-04-26

申请号：US14328993

申请日：2014-07-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Steven P. Moorman ,  Crystal Nassouri

IPC: F16H61/00 ,  F16H61/688 ,  F16H61/02

CPC classification number: F16H61/0025 ,  F16H61/0204 ,  F16H61/688 ,  F16H2061/0034

Abstract: A system includes a fluid pump, a hydraulic accumulator, and a controller. The controller calculates a reserve volume of the accumulator as a function of a component volume, leakage in the system, and a displacement of the pump, and executes a control action using the calculated reserve volume. The system may be a vehicle having input clutches and a dual clutch transmission (DCT) having gear forks. In such an embodiment, the accumulator and pump supply fluid pressure to the input clutches and gear forks in response to control signals from the controller. The controller executes a method that includes calculating the reserve volume of the accumulator as a function of a component volume, a volume of leakage in the system, and a displacement of the fluid pump. The method also includes executing a shift of the DCT using the calculated reserve volume.

Abstract translation: 系统包括流体泵，液压蓄能器和控制器。 控制器根据组件体积，系统中的泄漏和泵的位移计算蓄能器的储备量，并使用计算的储备量执行控制动作。 该系统可以是具有输入离合器的车辆和具有齿轮叉的双离合器变速器（DCT）。 在这种实施例中，蓄能器和泵响应于来自控制器的控制信号，向输入离合器和齿轮叉供给流体压力。 控制器执行一种方法，该方法包括根据组件体积，系统中的泄漏量和流体泵的位移来计算蓄能器的储备量。 该方法还包括使用所计算的预留量来执行DCT的移位。

公开(公告)号：US09140359B2

公开(公告)日：2015-09-22

申请号：US13906976

申请日：2013-05-31

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Brian M. Porto ,  Matthew D. Whitton ,  Steven P. Moorman ,  Craig J. Hawkins ,  Roberto Diaz

IPC: F16H61/688 ,  B60K17/00

CPC classification number: F16H61/688 ,  B60K17/00 ,  F16H61/0437 ,  F16H2059/363 ,  F16H2061/0078 ,  F16H2061/0087

Abstract: A vehicle includes an engine, a dry dual-clutch transmission (dDCT) having a pair of input clutches and a gearbox containing oddly- and evenly-numbered gear sets, and a transmission control module (TCM). Application of one of input clutches connects the engine to a corresponding one of the oddly- or evenly-numbered gear sets. The TCM includes feed-forward PID-based control logic, and a torque-to-position (TTP) table for each input clutch. The TCM commands a position of a designated input clutch during a power-on upshift using the feed-forward, PID-based control logic, and selectively adapts the TTP table as a function of an inertia and acceleration value of the engine. The TCM may apply an asymmetrical handoff profile to commanded oncoming and offgoing clutch torques during the torque phase of the upshift. The TCM may also adjust the TTP table as a function of the frequency of use of the input clutches.

Abstract translation: 车辆包括发动机，具有一对输入离合器的干式双离合器变速器（dDCT）和包含奇数和均匀编号的齿轮组的变速箱和变速器控制模块（TCM）。 一个输入离合器的应用将发动机连接到奇数或均匀齿轮组中相应的一个。 TCM包括基于PID的前馈控制逻辑和每个输入离合器的转矩到位置（TTP）表。 TCM使用前馈，基于PID的控制逻辑在上电升档期间指定指定输入离合器的位置，并且根据发动机的惯性和加速度值选择性地适配TTP表。 TCM可以在升档的扭矩阶段期间应用不对称切换轮廓来指令迎接和离开的离合器扭矩。 TCM还可以根据输入离合器的使用频率来调整TTP表。