CONTROL SYSTEM FOR HYBRID VEHICLE

摘要

A control system for a hybrid vehicle configured to reduce frequency of establishing an engine braking force is provided. The control system is configured to operate a first motor as a motor to increase torque of an output member while halting the output shaft of the engine by a brake, and to increase the deceleration torque of the second motor, if a state of charge of the battery is higher than a predetermined threshold level when deceleration of the hybrid vehicle is demanded.

主权项

1. A control system for a hybrid vehicle that is applied to a hybrid vehicle comprising:
a prime mover including an engine in which an output shaft is halted by a brake, a first motor, and a second motor that applies torque to an output member and that is electrically connected to the first motor through a battery; and a power distribution device that performs a differential action among a first rotary element, a second rotary element, and a third rotary element; in which the engine is connected to a first rotary element, the first motor is connected to a second rotary element, and the output member is connected to a third rotary element; wherein the control system is configured to operate the second motor as a generator to regenerate energy to establish a deceleration torque while charging the battery with an electric power generated by the second motor when deceleration of the hybrid vehicle is demanded; wherein the control system comprises a controller that controls the first motor and the second motor; and wherein the controller is configured to operate the first motor as a motor to increase torque of the output member while halting the output shaft of the engine by the brake, and to increase the deceleration torque of the second motor, if a state of charge of the battery is higher than a predetermined threshold level when deceleration of the hybrid vehicle is demanded.