公开(公告)号：US20180292003A1

公开(公告)日：2018-10-11

申请号：US15484785

申请日：2017-04-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry R. Wright ,  Brandon M. Fell ,  Mateusz M. Nowak

IPC: F16H61/02

CPC classification number: F16H61/0213 ,  B60W10/10 ,  B60W30/18072 ,  F16H59/18 ,  F16H59/54 ,  F16H59/70 ,  F16H2059/183 ,  F16H2061/0216 ,  Y10T477/679 ,  Y10T477/68 ,  Y10T477/688 ,  Y10T477/692

Abstract: A method for transmission upshift sequencing includes detecting a lift foot gear hold condition is met and that a current engine speed is greater than a pattern gear engine speed for the current gear. If these conditions exists then the current gear is held until a first sequence timer expires and then an upshift event occurs to a first gear having an engine speed less than the current engine speed. The first gear is then held until a at least one other sequence timer expires and, thereafter, at least one other gear is selected and held until the engine speed is less than or equal to a pattern gear engine speed.

公开(公告)号：US20180328485A1

公开(公告)日：2018-11-15

申请号：US15592813

申请日：2017-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mohamed O. Egal ,  Paul G. Otanez ,  Mateusz M. Nowak

IPC: F16H61/662 ,  F16H59/46

CPC classification number: F16H61/66272 ,  F16H59/14 ,  F16H59/46 ,  F16H2059/465 ,  F16H2061/6629

Abstract: A continuously variable transmission (CVT) and a method is provided for CVT variator gross slip detection includes determining if a difference between a commanded variator speed ratio and a real variator speed ratio is greater than a predetermined variator speed ratio threshold, and then determining if a variator rate of change ratio is outside of predetermined variator rate of change ratio limits. Further, the method includes determining if a real torque capacity ratio is greater than a predetermined torque capacity ratio threshold, and performing at least one remedial action when the variator rate of change ratio is outside of predetermined variator rate of change ratio limits, and the real torque capacity ratio is greater than the predetermined torque capacity ratio threshold when the difference between the commanded variator speed ratio and the real variator speed ratio is greater than the predetermined variator speed ratio threshold.

公开(公告)号：US11645880B2

公开(公告)日：2023-05-09

申请号：US17148643

申请日：2021-01-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xinyu Du ,  Zhongyu Yang ,  Joshua J. Sanchez ,  Kevin M. Corr ,  Yilu Zhang ,  Mateusz M. Nowak

IPC: G07C5/08

CPC classification number: G07C5/0808 ,  G07C5/0816

Abstract: A controller processes data from one or more sensors of a subsystem of a vehicle. The processing includes smoothing the data and calculating a mean of the data. The controller identifies a transition point in the processed data where a moving average of the data is less than the mean by a predetermined amount indicating a trend. The controller selects a segment of the processed data subsequent to the transition point, detects the trend in the segment using regression, and extrapolates the detected trend to reach a predetermined fault threshold. The controller predicts a failure of the subsystem based on a slope of the extrapolated trend and provides an indication of the prediction based on the slope to schedule a service for the subsystem.

公开(公告)号：US10661804B2

公开(公告)日：2020-05-26

申请号：US15950097

申请日：2018-04-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez ,  Michael Livshiz ,  Christopher J. Weingartz ,  Cole Reinhold ,  Michael T. Sarzynski ,  Mateusz M. Nowak ,  Bharath Pattipati

IPC: B60W10/06 ,  B60W10/107 ,  B60W30/188 ,  B60W30/18

Abstract: A propulsion system, control system, and method use model predictive control systems to generate a plurality of sets of possible command values and determine a cost for each set of possible command values. The set of possible command values that has the lowest cost is determined and defined as a selected set of command values. In some circumstances, the MPC-determined command value may be replaced by another transmission ratio command based on override inputs. Minimum and maximum transmission ratios are determined based on the override inputs, and a constrained (or arbitrated) transmission ratio is determined therefrom. The constrained or arbitrated transmission ratio is used to determine whether to apply an MPC-determined transmission ratio or a transmission ratio based on the arbitrated transmission ratio to determine an ultimate commanded transmission ratio. Pressure(s) are commanded to a transmission pulley assembly, which is configured to implement the ultimate commanded transmission ratio.

公开(公告)号：US20250052830A1

公开(公告)日：2025-02-13

申请号：US18366284

申请日：2023-08-07

Applicant: GM Global Technology Operations LLC

Inventor： Xinyu Du ,  Kevin Matthew Corr ,  Mateusz M. Nowak ,  Tung-Wah Frederick Chang ,  Sara Sadat Rahimifard ,  Hong Wong ,  Huaizheng Mu

IPC: G01R31/392 ,  G01R31/36 ,  G01R31/367 ,  G01R31/388 ,  G01R31/389

Abstract: A method of evaluating a low voltage (LV) battery system includes collecting parameters of the LV battery system, determining a health of the LV battery system based on one or more health indicators of a plurality of health indicators, and based on determining that the battery system is in an unhealthy condition, identifying a cause of the unhealthy condition based on selection of a set of health indicators. Determining the health includes identifying an enabling condition related to charging or discharging of the LV battery system, selecting a set of health indicators from the plurality of health indicators based on the identified enabling condition, estimating a value of each of the set of health indicators, and determining whether the LV battery system is in a healthy condition or the unhealthy condition based on the collected parameters and the value of each of the set of health indicators.

公开(公告)号：US20190308626A1

公开(公告)日：2019-10-10

申请号：US15950097

申请日：2018-04-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez ,  Michael Livshiz ,  Christopher J. Weingartz ,  Cole Reinhold ,  Michael T. Sarzynski ,  Mateusz M. Nowak ,  Bharath Pattipati

IPC: B60W30/188 ,  B60W10/06 ,  B60W10/107 ,  B60W30/18

Abstract: A propulsion system, control system, and method use model predictive control systems to generate a plurality of sets of possible command values and determine a cost for each set of possible command values. The set of possible command values that has the lowest cost is determined and defined as a selected set of command values. In some circumstances, the MPC-determined command value may be replaced by another transmission ratio command based on override inputs. Minimum and maximum transmission ratios are determined based on the override inputs, and a constrained (or arbitrated) transmission ratio is determined therefrom. The constrained or arbitrated transmission ratio is used to determine whether to apply an MPC-determined transmission ratio or a transmission ratio based on the arbitrated transmission ratio to determine an ultimate commanded transmission ratio. Pressure(s) are commanded to a transmission pulley assembly, which is configured to implement the ultimate commanded transmission ratio.