Zheng Liu

US Patent:

20180334038, Nov 22, 2018

Filed:

May 18, 2017

Appl. No.:

15/598569

Inventors:

- Dearborn MI, US
Ming Lang KUANG - Canton MI, US
Zheng Liu - Canton MI, US
Chen ZHANG - Canton MI, US

International Classification:

B60L 7/18
B60K 6/46
B60K 6/26
B60T 7/12

Abstract:

A vehicle includes a motor and a controller. The controller is programmed to, responsive to an autonomous braking request and a predicted average braking torque associated with the request having a magnitude less than a powertrain regenerative torque limit, brake the vehicle only with the motor according to a torque profile adapted from a most efficient torque profile of the motor so as to have an average value falling within a specified range of the average braking torque.

US Patent:

20180297475, Oct 18, 2018

Filed:

Apr 12, 2017

Appl. No.:

15/485845

Inventors:

- Dearborn MI, US
Ming Lang KUANG - Canton MI, US
Zheng LIU - Canton MI, US

International Classification:

B60L 7/26
B60L 7/18
B60T 8/172

Abstract:

An autonomous or semi-autonomous vehicle is provided that is capable of braking itself without a driver depressing the brake pedal. The vehicle has a powertrain that includes an engine, a transmission, and a motor with a connected battery to provide regenerative braking capabilities. Friction brakes are provided to apply when necessary, such as when the battery has a high state of charge and further regenerative braking would overcharge the battery. The braking may be activated in response to a sensor detecting a distance to an object in front of the vehicle. A vehicle controller is programmed to automatically control amounts of regenerative braking and friction braking during a braking event based on a comparison between a regenerative torque limit of the powertrain and a desired brake torque over the brake event to safely brake the vehicle during the brake event.