公开(公告)号：US11543024B1

公开(公告)日：2023-01-03

申请号：US17654183

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Bryan John Williams ,  Greg Perantoni ,  Matthew Pruski

IPC: F16H61/02 ,  F16H59/42 ,  F16H59/72 ,  F16H61/12 ,  F16H59/44 ,  F16H59/70

Abstract: Systems and methods are provided for controlling a transmission associated with a vehicle. The method includes receiving a neutral range selection for the transmission, and receiving a temperature and a pressure of a lubricant associated with the transmission. The method includes receiving a speed of an input shaft associated with the transmission, and determining, by a processor, based on the temperature and the speed of the input shaft, a pressure threshold value for the lubricant. The method includes outputting, by the processor, one or more control signals to command the transmission to a one clutch neutral state in which one clutch of a plurality of clutches associated with the transmission is engaged based on a comparison of the pressure threshold value to the pressure of the lubricant.

公开(公告)号：US10316963B2

公开(公告)日：2019-06-11

申请号：US15496626

申请日：2017-04-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xuefeng T Tao ,  Jeryl McIver ,  Leo P Dion ,  Greg Perantoni

IPC: G01M13/02 ,  F16H61/12 ,  F15B1/02 ,  F15B1/033 ,  F16H61/00 ,  F16H61/30

Abstract: A pressure sensor rationality diagnostic for a dual clutch transmission includes a series of sensor tests. One such test includes charging an oil accumulator to a maximum pressure and storing the maximum pressure value. After performing a discharge pressure event and measuring the pressure value, the difference between the max pressure value and the discharge pressure value is calculated to determine if the difference is less than a predetermined threshold. If the difference is less than the predetermined threshold then at least one remedial action is performed which may include a driver alert or default charging mode. Additionally, similar sensor tests are performed to determine if faults exists and, if true, at least one remedial action is performed.

公开(公告)号：US20180306317A1

公开(公告)日：2018-10-25

申请号：US15496626

申请日：2017-04-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xuefeng T Tao ,  Jeryl McIver ,  Leo P Dion ,  Greg Perantoni

IPC: F16H61/12 ,  F15B1/02 ,  F15B1/033 ,  F16H61/00 ,  F16H61/30

CPC classification number: F16H61/12 ,  F15B1/024 ,  F15B1/033 ,  F15B2201/51 ,  F16H61/0021 ,  F16H61/30 ,  F16H2061/0034 ,  F16H2061/1212 ,  F16H2061/1284 ,  F16H2061/305

Abstract: A pressure sensor rationality diagnostic for a dual clutch transmission includes a series of sensor tests. One such test includes charging an oil accumulator to a maximum pressure and storing the maximum pressure value. After performing a discharge pressure event and measuring the pressure value, the difference between the max pressure value and the discharge pressure value is calculated to determine if the difference is less than a predetermined threshold. If the difference is less than the predetermined threshold then at least one remedial action is performed which may include a driver alert or default charging mode. Additionally, similar sensor tests are performed to determine if faults exists and, if true, at least one remedial action is performed.