Control system for internal combustion engines

Details Control system for internal combustion engines Control system for internal combustion engines

1996-01-25

1998-05-19

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

123 9015, F02B 2900

Patent

active

057524785

ABSTRACT:
A control system for an internal combustion engine having a plurality of cylinders each having at least one intake valve, at least one exhaust valve, and a crankshaft. The control system has an electromagnetic driving section which electromagnetically causes opening and closing of at least one of the at least one intake valve and the at least one exhaust valve. A crank angle sensor generates a crank angle signal whenever the crankshaft rotates through a predetermined angle, and a cylinder position sensor generates a cylinder-discriminating signal indicative of a predetermined crank angle of a particular cylinder of a plurality of the cylinders. A piston position sensor detects an operating state or position of the piston of each of the plurality of the cylinders, based on the generated crank angle signal and the generated cylinder-discriminating signal. A CPU starts opening of the at least one of the at least one intake valve and the at least one exhaust valve, based on the detected operating state of the piston.

REFERENCES:
patent: 3882833 (1975-05-01), Longstaff et al.
patent: 4957074 (1990-09-01), Weissler, II et al.
patent: 5072700 (1991-12-01), Kawamura
patent: 5190013 (1993-03-01), Dozier
patent: 5222714 (1993-06-01), Morinigo et al.
patent: 5327856 (1994-07-01), Schroeder et al.
patent: 5596956 (1997-01-01), Ogawa et al.
& JP-A-61 2342313 (Yanmar Diesel Engine Co. Ltd.), Oct. 18, 1986 *Abstract*.

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