Engine shut-down for engine having adjustable valve timing

Details Engine shut-down for engine having adjustable valve timing Engine shut-down for engine having adjustable valve timing

2008-01-08

2008-01-08

Kwon, John T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S320000, C123S322000, C123S347000

Reexamination Certificate

active

07317984

ABSTRACT:
A method for operating at least an intake and exhaust valve in a cylinder with a piston of an engine in a vehicle, comprising during conditions of an engine shut-down, maintaining at least one of the intake and exhaust valves in a closed position, and during conditions where said at least one valve is in said closed position operating with the other of the intake and exhaust valve open, then closing the other of the intake and exhaust valve, and then opening the other of the intake and exhaust valve to generate braking torque to slow the engine.

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