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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.
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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.
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公开(公告)号：US11767005B2
公开(公告)日：2023-09-26
申请号：US16999152
申请日：2020-08-21
Applicant: GM Global Technology Operations LLC
Inventor： Steven P. Moorman , Bret M. Olson , Shawn M. Harris
CPC classification number: B60T17/221 , B60T13/146 , B60T13/686 , B60T13/745 , B60T2270/406
Abstract: A method of testing a braking system for an automotive vehicle that includes a master cylinder, a brake booster, a plurality of brake assemblies, a plurality of inlet valves, each inlet valve adapted to selectively allow brake fluid to flow into one of the plurality of brake assemblies and a plurality of outlet valves, each outlet valve adapted to selectively allow brake fluid to flow from one of the brake assemblies to a brake fluid reservoir, the method includes testing a first one of the plurality of inlet valves, testing a first one of the plurality of outlet valves, and sending diagnostic information to a controller within the automotive vehicle.
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4.发明申请公开(公告)号：US20190323602A1
公开(公告)日：2019-10-24
申请号：US15959668
申请日：2018-04-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Craig D. Reynolds , Avinash Singh , Bret M. Olson , Douglas A. Ward , Nolan K. Perry
IPC: F16H61/662
Abstract: A vehicle propulsion system includes an oncoming condition sensor that generates an oncoming condition signal, a continuously variable transmission with a variator assembly adapted to transfer torque between a first rotating member and a second rotating member through a flexible continuous device rotatably coupling the first rotating member to the second rotating member, one of the first rotating member and second rotating member including a clamping pulley adapted to controllably adjust a clamping force on the flexible continuous device, and a controller in communication with the oncoming condition sensor and the continuously variable transmission that is programmed to characterize an oncoming condition based upon the oncoming condition signal and to control the clamping pulley to adjust the clamping force based on the characterization of the oncoming condition.
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公开(公告)号：US09939077B2
公开(公告)日：2018-04-10
申请号：US15253166
申请日：2016-08-31
Inventor： Xiujie Gao , Nancy L. Johnson , Ronald R. Semel , Rory P. McIntyre , Mark J. Heikoop , Vijay A. Neelakantan , Bret M. Olson , Tyler P. Ownby , James H. Brown
CPC classification number: F16K31/002 , F03G7/065 , F16K1/12 , F16K1/14 , Y10T137/7737
Abstract: A fluid circuit includes a device, a cooler, and a valve. The valve includes a housing, a sealing member, a biasing device, and an actuator. The sealing member moves inside the housing between a first position and a second position. The actuator includes a smart material that is activated when the temperature of a fluid inside the housing exhibiting at least a first temperature, causing the sealing member to move to the second position. The smart material is deactivated when the fluid is a sufficient number of degrees less than the first temperature, causing the sealing member to move to the first position. The fluid flows from the housing to the device and then to the housing when the sealing member is in the first position. The fluid flows from the housing to the cooler and then to the device when the sealing member is in the second position.
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Patent Agency Ranking
公开(公告)号：US20180058600A1
公开(公告)日：2018-03-01
申请号：US15253160
申请日：2016-08-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC , DYNALLOY, INC.
Inventor： Xiujie Gao , Nancy L. Johnson , Bret M. Olson , Vijay A. Neelakantan , Tyler P. Ownby , James H. Brown
CPC classification number: F16K31/002 , F03G7/065 , F16K1/12 , Y10T137/7737
Abstract: A fluid circuit includes a device, a cooler, and a valve. The valve includes a housing, a sealing member, a biasing device, and an actuator. The sealing member moves inside the housing between a first position and a second position. The actuator includes a smart material that is activated when the temperature of a fluid inside the housing exhibiting at least a first temperature, causing the sealing member to move to the second position. The smart material is deactivated when the fluid is a sufficient number of degrees less than the first temperature, causing the sealing member to move to the first position. The fluid flows from the housing to the device and then to the housing when the sealing member is in the first position. The fluid flows from the housing to the cooler and then to the device when the sealing member is in the second position.
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公开(公告)号：US20140123791A1
公开(公告)日：2014-05-08
申请号：US13669936
申请日：2012-11-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Edward W. Mellet , Bret M. Olson
IPC: F16H3/08
CPC classification number: F16H3/093 , F16H2003/0931 , F16H2200/0052 , F16H2200/0056 , Y10T74/19233
Abstract: A transmission includes a housing, an input member connectable to an engine output member, and a launch clutch assembly connected to the input member. A first and a second countershaft are rotatably supported within the transmission housing. A plurality of co-planar gear sets are connected to the input member and the first and second countershafts. A plurality of torque transmitting mechanisms are provided for coupling various components of the co-planar gear sets to the input member and countershafts. The selective engagement of the launch clutch assembly and the torque transmitting mechanisms establishes at least one of six forward speed ratios and a reverse speed ratio.
Abstract translation: 变速器包括壳体，可连接到发动机输出构件的输入构件和连接到输入构件的发射离合器组件。 第一和第二中间轴可旋转地支撑在变速器壳体内。 多个共平面齿轮组连接到输入构件和第一和第二中间轴。 提供多个扭矩传递机构，用于将共平面齿轮组的各种部件联接到输入部件和中间轴。 发射离合器组件和扭矩传递机构的选择性接合建立六个前进速度比和倒档速度比中的至少一个。
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公开(公告)号：US11873867B1
公开(公告)日：2024-01-16
申请号：US18172446
申请日：2023-02-22
Applicant: GM Global Technology Operations LLC
Inventor： Clinton E. Carey , Dongxu Li , Edward W. Mellet , Bret M. Olson
IPC: F16D25/0638 , F16D25/10
CPC classification number: F16D25/0638 , F16D25/10
Abstract: An electric vehicle transmission includes a housing, a first gear, a second gear, and a first clutch pack supported in the housing. A first actuator is arranged in the housing. The first actuator is coupled with a first actuator member. A second actuator is arranged in the housing. The second actuator is coupled with a second actuator member. A modular actuation system is mounted to the housing. The modular actuation system includes a first energizer member and a second energizer member. The first energizer member is operatively connected to the first actuator and is operable to engage the first gear and the second energizer member is operatively connected to the second actuator and is operable to engage the second gear.
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9.发明申请公开(公告)号：US20190128414A1
公开(公告)日：2019-05-02
申请号：US15796889
申请日：2017-10-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Virinchi Mallela , Douglas A. Ward , Paul G. Otanez , Bret M. Olson , Ronald W. Van Diepen
IPC: F16H61/662 , F16H9/18
Abstract: A continuously variable transmission for a vehicle propulsion system includes a controller including an instruction set, the instruction set executable to determine whether a current inertia torque value is greater than a previous inertia torque value, execute control over one of a first clamp pressure and a second clamp pressure such that one of the first clamp pressure and the second clamp pressure corresponds to a current inertia torque value if the current inertia torque value is greater than a previous inertia torque value, and execute control over one of the first clamp pressure and the second clamp pressure such that said one of the first clamp pressure and the second clamp pressure corresponds to previous inertia torque value if the current inertia torque value is not greater than a previous inertia torque value for a predetermined period of time.
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公开(公告)号：US20170175886A1
公开(公告)日：2017-06-22
申请号：US14977986
申请日：2015-12-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Bret M. Olson , Ronald W. VanDiepen , Paul G. Otanez
IPC: F16H61/662 , F16H9/18
CPC classification number: F16H61/66272 , F16H9/18 , F16H61/66231 , F16H63/50 , F16H2061/66277 , F16H2063/508
Abstract: A continuously variable transmission (CVT) includes an input member, an output member, a variator assembly having a primary variator pulley operable for receiving an input torque via the input member, a secondary variator pulley operable for transmitting an output torque via the output member, and an endless rotatable drive element in frictional engagement with the primary and secondary variator pulleys, first and second speed sensors operable for measuring a respective rotational speed of the primary and secondary variator pulleys, and a controller. The controller executes a method to detect gross slip of the endless rotatable drive element with respect to the primary and secondary variator pulleys using the measured rotational speeds, and in response to the detected gross slip, to request a reduction in the input torque by a calculated amount over a calibrated duration until a level of the detected gross slip reaches a calibrated slip level.
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