Vehicle deceleration systems

A vehicle comprising:

• a body;
• a first driven wheel and a second driven wheel;
• and
• a propulsion system comprising:
• a first motor-generator;
• a differential;
• and
• a torque vectoring system comprising a second motor-generator,
• wherein the first motor-generator provides a first torque to the differential for transfer to the first driven wheel and the second driven wheel, and
• wherein the second motor-generator of the torque vectoring system is in-coupled to the differential and provides a second torque to the differential to supplement the first torque during a high deceleration event.

A deceleration system for a vehicle, comprising:

• a motor-generator,
• a gearbox comprising an input shaft rotatably coupled to and driven by the motor-generator and an output shaft configured to be rotatably coupled to a wheel of the vehicle;
• and
• a friction brake mounted to one of the motor-generator and the gearbox and rotatably coupled to the output shaft of the gearbox,
• wherein the motor-generator is configured to apply a first torque to the output shaft for decelerating the vehicle and the friction brake is configured to apply a second torque to the output shaft for decelerating the vehicle.

A vehicle comprising:

• a body;
• at least one driven wheel;
• a propulsion system having a motor-generator, with the at least one driven wheel being driven by the motor-generator, the motor-generator applies a first torque to the at least one driven wheel for decelerating the vehicle;
• a braking system having a friction brake for decelerating the at least one driven wheel, the friction brake applies a second torque to the at least one driven wheel for decelerating the vehicle;
• and
• a control system configured to cooperatively operate the propulsion system and the braking system to decelerate the vehicle,
• wherein the control system is configured to operate the propulsion system and the braking system to decelerate the vehicle during a high deceleration event,
• wherein the control system is configured to operate the propulsion system without operating the braking system to decelerate the vehicle during a low deceleration event,
• wherein in the low deceleration event, the control system operates the motor-generator to apply the first torque and does not operate the friction brake such that the second torque is zero, and in the high deceleration event, the control system operates the friction brake for the second torque to be at a constant level and operates the motor-generator for the first torque to supplement the second torque.

A vehicle comprising:

• a body;
• at least one driven wheel;
• a propulsion system having a motor-generator, with the at least one driven wheel being driven by the motor-generator;
• a braking system having a friction brake for decelerating the at least one driven wheel;
• and
• a control system configured to cooperatively operate the propulsion system and the braking system to decelerate the vehicle,
• wherein the control system is configured to operate the propulsion system and the braking system to decelerate the vehicle during a high deceleration event,
• wherein the control system is configured to operate the propulsion system without operating the braking system to decelerate the vehicle during a low deceleration event, and
• wherein the control system limits operation of the vehicle according to a condition of the friction brake.