METHOD OF INCREASING REGENERATION IN A HYBRID VEHICLE BEYOND WHAT IS CALCULATED FROM REQUESTED VEHICLE DECELERATION

摘要

A method of controlling a vehicle includes calculating a desired deceleration limited regeneration torque request based on a requested deceleration input from a driver. If current dynamic operating conditions of the vehicle are in a performance region that permits an increase to the regeneration torque request, the desired deceleration limited regeneration torque request is increased based on a regeneration torque overhead, to define a modified axle regeneration torque request. Modified torque values are output based on the modified axle regeneration torque request. If the torque control values will cause an estimated yaw rate that is less than a target yaw rate, then the modified torque values are applied. Otherwise, the modified torque values are re-defined until the estimated yaw rate is not greater than the target yaw rate, and the re-defined values of the modified torque values are applied.

主权项

1. A method of controlling a vehicle, the method comprising:
calculating a desired deceleration limited regeneration torque request, with a vehicle controller, based on a requested deceleration input; increasing the desired deceleration limited regeneration torque request, with the vehicle controller, based on available additional regeneration capacity of the vehicle, to a level that will not change a yaw rate of the vehicle more than an allowable yaw rate target, wherein the increased desired deceleration limited regeneration torque request value is defined as a modified axle regeneration torque request; and sending a control signal to a friction braking device at each wheel of the vehicle, with the vehicle controller, to control the friction braking device at each wheel of the vehicle to achieve the modified axle regeneration torque request.