公开(公告)号：US11745741B2

公开(公告)日：2023-09-05

申请号：US17206616

申请日：2021-03-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jacob M. Knueven ,  Jason C. Jousma ,  Paul G. Otanez ,  Aubrey W. Downs, Jr. ,  Joseph D. Hillegass ,  Abdoulaye T. Diallo

IPC: B60W30/14 ,  B60K31/00 ,  B60L15/20 ,  G01P15/08 ,  G01P3/44 ,  B60K6/22

CPC classification number: B60W30/146 ,  B60K31/00 ,  B60L15/20 ,  G01P3/44 ,  G01P15/08 ,  B60K6/22 ,  B60K2031/0091 ,  B60L2240/12 ,  B60L2240/14 ,  B60W2530/10 ,  B60W2540/10 ,  B60W2540/12 ,  B60Y2200/91 ,  B60Y2200/92

Abstract: A method detects unintended acceleration of a motor vehicle during a closed-loop speed control mode by determining external forces on the vehicle via a controller, and then calculating a desired acceleration using a measured vehicle speed and the external forces. The method includes determining an actual acceleration of the vehicle, including filtering a speed signal as a first actual acceleration value and/or measuring a second actual acceleration value using an inertial measurement unit (IMU). During the speed control mode, the method includes calculating an acceleration delta value as a difference between the desired acceleration and the actual acceleration, and then using the acceleration delta value to detect the unintended acceleration during the speed control mode. A powertrain system for the motor vehicle, e.g., an electric vehicle, includes the controller and one or more torque generating devices coupled to road wheels of the vehicle.

公开(公告)号：US10145470B2

公开(公告)日：2018-12-04

申请号：US15019463

申请日：2016-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhen J. Zhang ,  Paul G. Otanez

IPC: F16H61/662

Abstract: A continuously variable transmission (CVT) for use with a torque generating mechanism includes an input member connectable to the torque generating mechanism, an output member, a variator assembly, and a controller. The controller is programmed to control a change-of-mind shift of the CVT requesting a transition from an initially-requested shift to a next-requested shift before completion of the initially-requested shift. Additionally, the controller is programmed to execute a method by detecting the change-of-mind shift, determining an acceleration profile of the input member for the change-of-mind shift using a calibration map indexed by a starting and target ratio of the variator assembly, and calculating a required ratio of the input and output pulleys using the acceleration profile. The controller then commands a clamping pressure of the variator assembly to thereby achieve the calculated required ratio. A vehicle includes an engine and the CVT noted above.

公开(公告)号：US20180335138A1

公开(公告)日：2018-11-22

申请号：US15596219

申请日：2017-05-16

Applicant: GM Global Technology Operations LLC

Inventor： Ronald F. Lochocki ,  Christopher J. Weingartz ,  Greg J. Perantoni ,  Stuart W. Parker ,  Paul G. Otanez ,  Bret M. Olson ,  Mary M. Whitley ,  Nathan A. Schmidt

IPC: F16H61/662 ,  F16H9/18

CPC classification number: F16H61/66272 ,  F16H9/18 ,  F16H2061/66277

Abstract: An apparatus for ratio control of a continuously variable transmission includes a driver commanded ratio unit outputting a signal defining a commanded ratio. A clamp control portion is in communication with the driver commanded ratio unit. The clamp control portion includes: a ratio limits and override ring selecting a ratio matching the commanded ratio from an executable functions having stored ratio code data; a screening monitor continuously receiving output from the executable functions and using an input from a vehicle speed signal to compute minimum and maximum ratio limits for the ratio selected by the ratio limits and override ring; and a ratio control execution ring in communication with the screening monitor. The ratio control execution ring calculates a range of pressures allowed for operation of both primary and secondary pulleys of the continuously variable transmission.

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：US09765884B2

公开(公告)日：2017-09-19

申请号：US14935574

申请日：2015-11-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhen J. Zhang ,  Paul G. Otanez ,  Shushan Bai

IPC: F16H61/662 ,  F16H9/18

CPC classification number: F16H61/66272 ,  F16H9/18 ,  F16H59/44

Abstract: A powertrain system including an internal combustion engine rotatably coupled to a variator of a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining an actual speed ratio, a desired speed ratio and a commanded speed ratio. A total speed ratio change rate is determined based upon the actual speed ratio, the desired speed ratio and the commanded speed ratio, and a commanded speed ratio trajectory is determined based upon the desired speed ratio and the commanded speed ratio. A ratio change coefficient and a force ratio factor are determined based upon the commanded speed ratio trajectory, and a shift force is determined based upon the total speed ratio change rate and the ratio change coefficient. A primary pulley force and a secondary pulley force for the CVT are controlled based upon the shift force and the force ratio factor.

公开(公告)号：US09689495B2

公开(公告)日：2017-06-27

申请号：US14935575

申请日：2015-11-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhen J. Zhang ,  Paul G. Otanez ,  Shushan Bai

IPC: F16H9/18 ,  F16H61/662 ,  B60W10/107

CPC classification number: F16H61/66272 ,  B60W10/107 ,  F16H9/18 ,  F16H61/66259 ,  F16H2061/66204 ,  Y10T477/6237 ,  Y10T477/624 ,  Y10T477/6242

Abstract: A powertrain system including an internal combustion engine rotatably coupled to a variator of a continuously variable transmission (CVT) is described. A method for controlling the CVT includes determining a first speed ratio change rate based upon a desired speed ratio and a commanded speed ratio, and determining a commanded speed ratio trajectory based upon the first speed ratio change rate, an actual speed ratio and a commanded speed ratio. A ratio change coefficient and a force ratio factor are determined based upon the commanded speed ratio trajectory. A shift force is determined based upon the ratio change coefficient and a total speed ratio change rate. A primary pulley pressure and a secondary pulley pressure for the CVT are controlled based upon the shift force and the force ratio factor.

公开(公告)号：US20160047466A1

公开(公告)日：2016-02-18

申请号：US14458652

申请日：2014-08-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez ,  Nathaniel E. Wilke

IPC: F16H61/04 ,  F16H61/686 ,  F16H59/44

CPC classification number: F16H61/0437 ,  F16H3/66 ,  F16H59/40 ,  F16H59/42 ,  F16H59/44 ,  F16H61/686 ,  F16H2061/0462 ,  F16H2061/0474 ,  F16H2200/201 ,  F16H2200/2038 ,  F16H2200/2043 ,  F16H2200/2064 ,  F16H2200/2066 ,  F16H2200/2082 ,  F16H2200/2094

Abstract: A vehicle includes an engine, torque converter, and transmission assembly. The transmission assembly includes gear sets each having a plurality of nodes, an input member, a binary clutch connected to a node of one of the gear sets, friction clutches, and a controller. The controller detects a requested rolling garage shift of the transmission into a forward drive mode above a calibrated threshold absolute speed, and controls an amount of slip across a selected assisting clutch via modulation of pressure commands to the selected assisting clutch once the vehicle has slowed below the first calibrated threshold speed. The controller also stages the binary clutch to a calibrated staging pressure while controlling slip across the selected assisting clutch, and commands an engagement of the binary clutch and a release of the selected assisting clutch when a speed of the binary node reaches zero or a calibrated low non-zero speed.

Abstract translation: 车辆包括发动机，变矩器和变速器组件。 变速器组件包括齿轮组，每个齿轮组具有多个节点，输入部件，连接到齿轮组之一的节点的二进制离合器，摩擦离合器和控制器。 控制器检测到变速器所要求的滚动车库位移到高于校准的阈值绝对速度的正向驱动模式，并且一旦车辆已经减速到下面，则控制通过调节压力命令到所选择的辅助离合器的选定辅助离合器的滑动量 第一个校准阈值速度。 控制器还将二进制离合器分级到校准的分段压力，同时控制所选择的辅助离合器上的滑移，并且当二进制节点的速度达到零或校准低时，命令二进制离合器的接合和所选辅助离合器的释放 非零速度。

公开(公告)号：US09261187B1

公开(公告)日：2016-02-16

申请号：US14504696

申请日：2014-10-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez

IPC: F16H61/662 ,  F16H59/14 ,  F16H59/42 ,  F16H59/68 ,  F16H61/00

CPC classification number: F16H59/68 ,  F16H59/14 ,  F16H59/42 ,  F16H61/662

Abstract: A vehicle includes an engine, a continuously variable transmission (CVT), and a controller. The CVT has an output shaft, a primary pulley connected to and driven by the engine, a secondary pulley connected to the output shaft, and a belt. The pulleys each have mating halves with conical faces defining a gap in which the belt is positioned. Actuators act on one of the halves of the primary and secondary pulleys in response to a respective primary and secondary pressure. The controller detects a desired CVT ratio change in response to control inputs and determines a required shift force for achieving the desired ratio change. The controller also determines whether a calibrated rate of change is achievable. The controller adjusts the primary and/or secondary pressures when the calibrated rate is not achievable, including transmitting a pressure command to at least one of the primary and secondary actuators.

Abstract translation: 车辆包括发动机，无级变速器（CVT）和控制器。 CVT具有输出轴，连接到发动机并由发动机驱动的主滑轮，连接到输出轴的次级滑轮和皮带。 滑轮各自具有配合半部，其具有限定带定位的间隙的锥形面。 响应于相应的初级和次级压力，致动器作用在主滑轮和次级滑轮的一半上。 控制器响应于控制输入来检测所需的CVT比变化，并确定所需的换档力以实现所需的比率变化。 控制器还确定校准的变化率是否可实现。 当校准速率不可达时，控制器调节初级和/或次级压力，包括向初级和次级致动器中的至少一个传动压力命令。

公开(公告)号：US09174640B2

公开(公告)日：2015-11-03

申请号：US14093793

申请日：2013-12-02

Applicant: GM Global Technology Operations LLC

Inventor： Randall B. Dlugoss ,  Paul G. Otanez

IPC: B60W20/00 ,  B60K6/50

CPC classification number: B60W20/40 ,  B60K6/48 ,  B60K6/50 ,  B60K2006/4825 ,  B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W20/30 ,  B60W2540/10 ,  B60W2710/0644 ,  B60W2710/0661 ,  B60W2710/1005 ,  Y02T10/6221 ,  Y02T10/6252 ,  Y02T10/6286 ,  Y10S903/902

Abstract: A system for controlling a hybrid powertrain having an electric motor, an engine and a transmission includes an engine control module that receives a torque request, and when the hybrid powertrain is being powered by the electric motor, determines whether to switch from the electric motor to the engine based on the torque request. A transmission control module, in response to a determination to switch from the electric motor to the engine, determines a target engine speed based on the torque request, and switches the hybrid powertrain from the electric motor to the engine based on a comparison between a current engine speed and the target engine speed.

Abstract translation: 用于控制具有电动机，发动机和变速器的混合动力系的系统包括：接收转矩请求的发动机控制模块;当混合动力系由电动机供电时，判定是否从电动机切换到 发动机基于扭矩要求。 传动控制模块响应于从电动机切换到发动机的确定，基于转矩请求确定目标发动机转速，并且基于电流之间的比较将混合动力系从电动机切换到发动机 发动机转速和目标发动机转速。

公开(公告)号：US09074664B2

公开(公告)日：2015-07-07

申请号：US13921903

申请日：2013-06-19

Applicant: GM Global Technology Operations LLC

Inventor： Casie M. Bockenstette ,  Carlos E. Marin ,  Paul G. Otanez ,  Craig S. Ross

IPC: F16H3/62

CPC classification number: F16H3/62 ,  F16H3/663 ,  F16H2200/0065 ,  F16H2200/201 ,  F16H2200/2012 ,  F16H2200/2023 ,  F16H2200/2046 ,  F16H2200/2082

Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes including a selectable one-way clutch actuatable in combinations of two to establish a plurality of forward gear ratios and one reverse gear ratio. The transmission also includes a transmission auto start/stop enabler which includes a latch mechanism. The latch mechanism readies one of the plurality of torque transmitting devices during an engine auto stop/start event or in preparation for a stop of the motor vehicle.

Abstract translation: 提供一种变速器，其具有输入构件，输出构件，四个行星齿轮组，多个联接构件和多个扭矩传递装置。 每个行星齿轮组包括第一，第二和第三构件。 扭矩传递装置包括离合器和制动器，该离合器和制动器包括可组合的两个可启动的可选择的单向离合器，以建立多个前进档比和一个倒档。 变速器还包括一个包括闩锁机构的变速器自动启/停启动器。 在发动机自动停止/启动事件期间，或者准备停止机动车辆时，闩锁机构准备好多个扭矩传递装置中的一个。