SYSTEM FOR CONTROLLING OVERALL COASTING TORQUE IN A HYBRID ELECTRIC VEHICLE

摘要

A hybrid vehicle is provided that includes an engine, a reversible electric machine capable of generating and providing electric power, and a clutch for selectively engaging the engine to the electric machine. While the vehicle is traveling, an operator of the vehicle may release (“tip-out”) the accelerator pedal, indicating a desire for a reduction in speed and/or acceleration of the vehicle. If the clutch is engaged during the tip-out, the at least one controller is programmed to disengage the clutch and alter a commanded torque to the electric machine in response to the tip-out of the accelerator pedal to simulate compression braking of the engine. If the vehicle is operating in an electric-only mode of propulsion during the tip-out, and if a state-of-charge of the battery is relatively high, the controller is programmed to activate the engine and provide compression torque to the driveline in response to the tip-out.

主权项

1. A hybrid vehicle comprising:
an engine; an electric machine selectively coupled to the engine via a clutch; an accelerator pedal; and at least one controller programmed to disengage the clutch and alter a commanded torque to the electric machine in response to a tip-out of the accelerator pedal to simulate compression braking of the engine.