Invention Grant
- Patent Title: Techniques for detecting and monitoring unintended powertrain propulsive torque in hybrid vehicles
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Application No.: US15885083Application Date: 2018-01-31
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Publication No.: US10759409B2Publication Date: 2020-09-01
- Inventor: Behrouz Ashrafi , Feisel F Weslati , Sathya Manivasagam
- Applicant: Behrouz Ashrafi , Feisel F Weslati , Sathya Manivasagam
- Applicant Address: US MI Auburn Hills
- Assignee: FCA US LLC
- Current Assignee: FCA US LLC
- Current Assignee Address: US MI Auburn Hills
- Agent Ralph E Smith
- Main IPC: B60W20/10
- IPC: B60W20/10 ; B60W10/08 ; B60W50/10 ; B60W10/192 ; B60W30/18 ; B60K6/445 ; B60W20/50 ; B60W10/18 ; B60W50/038 ; B60W10/06 ; B60W30/188

Abstract:
A control system and method for a hybrid vehicle involve controlling a hybrid powertrain comprising an engine and a transmission having one or more electric motors and not comprising a decoupling mechanism therebetween, detecting an operating condition where the transmission is in neutral and the vehicle is moving at a speed less than a low speed threshold, and in response to detecting the operating condition: determining a desired propulsive torque of the powertrain, determining an actual propulsive torque at the driveline, calculating a torque difference between the actual and desired propulsive torques over a period, comparing the calculated torque difference to a first movement threshold, and when the calculated torque difference exceeds the first movement threshold, applying an electric parking brake (EPB) of the vehicle.
Public/Granted literature
- US20190232940A1 TECHNIQUES FOR DETECTING AND MONITORING UNINTENDED POWERTRAIN PROPULSIVE TORQUE IN HYBRID VEHICLES Public/Granted day:2019-08-01
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