公开(公告)号：US09663108B2

公开(公告)日：2017-05-30

申请号：US14153254

申请日：2014-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Adam J. Heisel

IPC: B60W10/08 ,  B60W30/18 ,  B60W20/10

CPC classification number: B60W30/18063 ,  B60W20/10 ,  B60W30/18036 ,  B60W2520/06 ,  B60W2520/10 ,  B60W2540/10 ,  B60W2540/12 ,  B60W2720/30 ,  Y10T477/817

Abstract: A method for operating a powertrain system of a vehicle includes determining an initial creep torque command in an operator-selected direction of travel, adjusting the initial creep torque command responsive to an operator braking request and responsive to a change in direction of vehicle speed relative to the operator-selected direction of travel, and operating the hybrid powertrain to generate axle torque in response to the adjusted creep torque command.

公开(公告)号：US20220227237A1

公开(公告)日：2022-07-21

申请号：US17153244

申请日：2021-01-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Paul G. Otanez ,  Yiran Hu ,  Nathaniel S. Michaluk ,  Krunal P. Patel ,  Adam J. Heisel ,  Kevin J. Storch ,  Jacob M. Knueven ,  Matthew Yard

IPC: B60L15/20 ,  B60T8/17

Abstract: A method of operating a vehicle includes a vehicle controller receiving an operator-input vehicle control command with an associated torque request, and identifying any propulsion actuator constraints that limit a brake torque capacity available from the vehicle powertrain. Using the propulsion actuator constraint(s) and torque request, the controller determines a propulsion brake torque distribution for the vehicle's road wheels and a maximum brake torque capacity for the powertrain actuator(s). A first brake torque request is determined using the propulsion brake torque distribution and a vehicle control mode of the powertrain system, and a second brake torque request is determined using the maximum brake torque capacity and the vehicle control mode. A friction brake torque command is determined by arbitrating between the first and second brake torque requests. The vehicle controller transmits the friction brake torque command to the friction brake system and a powertrain brake command to the powertrain actuator(s).

公开(公告)号：US10782145B2

公开(公告)日：2020-09-22

申请号：US15441829

申请日：2017-02-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael G. Diaz ,  Adam J. Heisel

IPC: G01C22/02 ,  B60K1/00 ,  B60K17/12 ,  B60L3/12 ,  G01D5/20

Abstract: Vehicles, systems, and methods for determining a distance travelled are provided. In an exemplary embodiment, a vehicle includes an electric motor with a motor rotor shaft. A motor resolver is positioned adjacent to the motor rotor shaft, where the motor resolver is configured to determine a motor position of the electric motor based on revolutions of the motor rotor shaft. A controller is in communication with the motor resolver, where the controller is configured to determine a distance travelled from a change in the electric motor position.

公开(公告)号：US20200039503A1

公开(公告)日：2020-02-06

申请号：US16052701

申请日：2018-08-02

Applicant: GM Global Technology Operations LLC

Inventor： Shaun C. Bowman ,  Ryan H. Jones ,  Jason R. Ekelmann ,  Adam J. Heisel

IPC: B60W20/19 ,  B60W10/08 ,  B60W10/06

Abstract: A method of controlling a change in net axle torque on a vehicle comprises receiving a request for a desired net axle torque that is different than a current net axle torque, determining whether a lash zone exists between the current net axle torque and the desired net axle torque, determining a progression of constant rates of change of the front axle torque and a progression of constant rates of change of the rear axle torque that will result in a constant rate of change of the net axle torque from the current net axle torque to the desired net axle torque, and commanding the progression of constant rates of change of the front axle torque and the progression of constant rates of change of the rear axle torque if the lash zone exists between the current net axle torque and the desired net axle torque.

公开(公告)号：US10259341B2

公开(公告)日：2019-04-16

申请号：US15459486

申请日：2017-03-15

Applicant: GM Global Technology Operations LLC

Inventor： Love Lor ,  Adam J. Heisel

IPC: B60L15/20 ,  H02P27/06 ,  B60W30/18

Abstract: A road load module is configured to determine a road load torque to maintain zero vehicle acceleration. A closed loop (CL) module is configured to determine a CL torque based on a difference between a target vehicle speed and a vehicle speed. A motor torque module is configured to: produce a limited CL torque by limiting the CL torque to a predetermined torque limit when a magnitude of the CL torque is greater than a magnitude of the predetermined torque limit; when the vehicle speed is within a predetermined low speed range and a magnitude of the road load torque is greater than or less than a magnitude of a predetermined maximum torque, adjust the predetermined torque limit; and determine a motor torque command based on the limited CL torque and a motor torque request determined based on a position of an accelerator pedal.