Patent ID: 7685815

Claim:
A vehicle comprising: wheels on which the vehicle travels; an engine comprising an exhaust system having an exhaust after-treatment device that requires occasional regeneration; service brakes for braking the wheels when a brake pedal is depressed; a drivetrain for coupling driven wheels to the engine including a drivetrain device for selectively coupling and de-coupling driven wheels to and from the engine; a system for enabling and initiating regeneration of the exhaust after-treatment device comprising a first signal for indicating to an occupant of the vehicle a need for regeneration, a second signal caused by the occupant's depression of the brake pedal to request regeneration, a timer whose starting is conditioned on occurrence of both the first signal and the second signal, and a third signal for initiating regeneration provided that at the end of a length of time after the timer has started the occupant is depressing the brake pedal to cause the second signal to be given.