Fca US LLC

Chrysler Group LLC

Chandan Lakshmanaiah

Behrouz Ashrafi

Feisel F Weslati

Nadirsh Patel

Zachary Rogalski

James R Hollowell

Salim Hamam

Divya E Gorecki

Richard Roy

Zachary C Rogalski

An electrical regeneration and vehicle deceleration control method includes operating an electrified powertrain in normal or maximum regeneration modes associated with lesser and greater electrical regeneration and vehicle deceleration rates, respectively, receiving an input from a driver of the vehicle indicative of a request to enable the maximum regeneration mode, detecting a status indicative of an availability of the maximum regeneration mode, and in response to receiving the request and based on the status of the maximum regeneration mode and a current vehicle deceleration rate: (i) operating the electrified powertrain in either the maximum regeneration mode or a normal regeneration mode, (ii) selectively outputting a message to the driver indicative of the status of the maximum regeneration mode, and (iii) selectively commanding a hydraulic brake system of the vehicle to generate brake force based on a driver-expected vehicle deceleration rate associated with the operative regeneration mode.

Control of user-selectable vehicle deceleration rate to maximize regeneration for electrified propulsion systems

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

Methods and systems of processing sensor signals to determine motion of a motor shaft are disclosed. This disclosure relates to the processing of sequences of pulses from a sensor for computing the motion of an electric motor output shaft. Furthermore, this disclosure relates to the processing of two sequences of pulses from sensor outputs, which may be separated by only a few electrical degrees, to compute the motion of an electrical motor output shaft while using a limited bandwidth controller. Motor shaft direction, displacement, speed, phase, and phase offset may be determined from processing the sensor signals.

Method of processing sensor signals for determining motion of a motor shaft

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Troy, MI, United States of America

Chandan Lakshmanaiah