Method of stopping internal combustion engine

Details Method of stopping internal combustion engine Method of stopping internal combustion engine

2007-05-17

2008-10-21

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

C701S112000, C123S179400

Reexamination Certificate

active

07438042

ABSTRACT:
There is provided a method of stopping an internal combustion engine having a combustion chamber and an intake valve which opens during an intake stroke of an engine cycle to allow air to be inducted into the combustion chamber. The method comprises advancing closing timing and reducing a lift of the intake valve to reduce air charged in said combustion chamber and shutting off fuel to the combustion chamber upon a request of engine stop, maintaining a speed of the internal combustion engine within a predetermined range without supplying fuel to the combustion chamber and with the advanced closing timing and the reduced lift of the intake valve at least for one intake stroke of the combustion chamber, and decreasing the speed of the internal combustion engine with the advanced closing timing and the reduced valve lift of the intake valve from the predetermined range. Accordingly, the air in the combustion chamber can be quickly reduced so that the engine can be stopped without a substantial vibration caused by the compression of the air in the combustion chamber. Therefore, the period to keep the engine speed above the predetermined value can be made shorter so that the energy consumed for that, for example, electric power to operate an electric machine to drive the engine, can be reduced.

REFERENCES:
patent: 7047126 (2006-05-01), Lewis
patent: 7059297 (2006-06-01), Kataoka et al.
patent: 7167792 (2007-01-01), Kolmanovsky et al.
patent: 7240663 (2007-07-01), Lewis et al.
patent: 7317984 (2008-01-01), Lewis
patent: 2002-213261 (2002-07-01), None
patent: 2004-308570 (2004-11-01), None

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