Fca US LLC

Chrysler Group LLC

Salim Hamam

Behrouz Ashrafi

Feisel F Weslati

Laszlo Hideg

Chandan Lakshmanaiah

Joseph Ivacko

A technique includes receiving, at a controller of a vehicle, the controller including one or more processors, a first request to calibrate a park lock system of the vehicle. The calibration can include commanding, by the controller, a first actuator to move a second actuator to maximum engagement/disengagement positions indicating maximum engagement/disengagement of a park pawl with/from a park gear of a transmission. The calibration can include determining, at the controller, full engagement/disengagement positions for the second actuator based on the maximum engagement/disengagement positions. The controller can then control the engagement/disengagement of the park lock system using the full engagement/disengagement positions for the second actuator, respectively.

Techniques for robust park lock control

A method and system of providing hydraulic pressure during a transition from gas-powered engine operation to electric motor operation in a hybrid electric vehicle. During the transition, main pressure arising from operation of a gas-powered engine with a main pump is matched with auxiliary pressure arising from operation of a battery-powered electric motor with an auxiliary pump. After matching the main and auxiliary pressures, the auxiliary pressure is boosted to an operational pressure in response to a triggering event.

Main pump to auxiliary pump hand-off strategy for maintaining hydraulic pressure in hybrid transmission

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Dearborn Heights, MI, United States of America

Salim Hamam