Engine start control apparatus

Details Engine start control apparatus Engine start control apparatus

2007-03-20

2007-03-20

Kwon, John T. (Department: 3747)

Internal-combustion engines

Starting device

Condition responsive control of starting device

C123S179180

Reexamination Certificate

active

11249451

ABSTRACT:
An engine start control apparatus includes a crank angle sensor, and a stroke discrimination device that discriminates which of engine cylinders is in intake or compression strokes in an engine stopped state. A crankshaft is temporarily reverse-rotated in a reverse-rotational direction by way of crankshaft reverse-rotation control until an intake valve becomes shifted from a valve closed state to a valve open state, when cranking the engine for startup under a specific condition where a crankangle of an engine cylinder whose piston stroke is in the intake stroke or in the compression stroke, is within a specified crankangle range from 40 degrees of crankangle before a piston B.D.C. position to 40 degrees of crankangle after the piston B.D.C. position. The crankshaft is rotated in a normal-rotational direction by way of crankshaft normal-rotation control after the intake valve has been shifted to the valve open state.

REFERENCES:
patent: 6647935 (2003-11-01), Aoyama et al.
patent: 6769404 (2004-08-01), Aoyama et al.
patent: 6807956 (2004-10-01), Gaessler et al.
patent: 2002/0017256 (2002-02-01), Shiraishi et al.
patent: 2002/0026913 (2002-03-01), Ariga
patent: 2002/0092488 (2002-07-01), Aoyama et al.
patent: 2003/0019448 (2003-01-01), Aoyama et al.
patent: 2003/0154964 (2003-08-01), Gaessler et al.
patent: 2002-39038 (2002-02-01), None
patent: 2002-61522 (2002-02-01), None
patent: 2003-172112 (2003-06-01), None
patent: 2004-11537 (2004-01-01), None

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