HYBRID VEHICLE AND METHOD OF BRAKING BY CONTROLLING AN EXHAUST HEAT RECOVERY DEVICE BYPASS VALVE ON A HYBRID VEHICLE

摘要

A method of braking a vehicle includes determining via a controller a desired braking power for braking the vehicle. Under the method, a bypass valve that controls exhaust gas flow through the exhaust heat recovery device is moved via the controller to a relatively restrictive position to provide at least some of the desired braking power.

主权项

1. A method of braking a hybrid vehicle that has a powertrain with an engine and that has an exhaust system including an exhaust heat recovery device, the method comprising:
determining via a controller a desired braking power for braking the vehicle; and moving a bypass valve that controls exhaust gas flow through the exhaust heat recovery device to a relatively restrictive position to provide at least some of the desired braking power, compressed exhaust gas thereby causing increased torque on the engine to provide at least some of the desired braking power.