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

2006-03-14

2006-03-14

Kwon, John T. (Department: 3747)

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

C123S090150

Reexamination Certificate

active

07011075

ABSTRACT:
A method for discontinuing combustion in a cylinder of an internal combustion engine having an intake manifold and an emission control device coupled downstream of thereof, where the cylinder has at least one valve, the method comprising during a shut-down, holding the at least one valve closed for at least a cycle of the cylinder to reduce a flow of gasses from the engine to the emission control device.

REFERENCES:
patent: 5284116 (1994-02-01), Richeson, Jr.
patent: 2005/0205049 (2005-09-01), Lewis

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