Ignition control device for internal combustion engine

Details Ignition control device for internal combustion engine Ignition control device for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

02

P

F02P 7/06 (2006.01) F02P 7/077 (2006.01) G01D 5/14 (2006.01) G01D 5/16 (2006.01) G01P 13/04 (2006.01) F02B 61/02 (2006.01)

Patent

CA 2427721

A rotor of a crankshaft has protrusions . A timing sensor produces a rotation leading signal and a rotation trailing signal. A control unit measures a previous signal production interval and a present signal production interval based on the rotation signals, and determines that the rotor is in the forward rotation if an inequality of Tn/Tn-1 <= K holds alternately but consecutively by four times on the side of the rotation trailing signal. As a result, at the time of manufacturing the rotor, the degree of freedom of design in the positional relations of the protrusions can be enhanced to control the ignition timing precisely and stably.

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