PROCESS FOR MARKING CYLINDER FOR FUEL INJECTION SYSTEM OF INTERNAL COMBUSTION ENGINE

Japanese Patent JP3261212

B2

PURPOSE: To eliminate special sensors for marking cylinders by stopping fuel injection in a reference cylinder for a predetermined moment, detecting the combustion misfire caused by the stop of fuel injection, determining the stroke of the reference cylinder and producing a cylinder identifying signal from the result of determination and a position detection signal.
CONSTITUTION: After the start-up of an engine 1, injection of fuel of an electromagnetic injection valve for a reference cylinder is stopped for a predetermined moment purposely by a control system 7. An occurrence of a combustion misfire caused by the stop of fuel injection is detected based on the output of a detector 22 which detects the passing of teeth arranged on a disc 12 of a crankcase. Times of passing the top dead point between the moment of stopping of fuel injection and the moment of detecting the consequent combustion misfire is measured. The measured number of times is used to determine whether the stroke of the reference cylinder is an intake stroke or an explosion stroke. A signal for marking cylinders in phase with a position detection signal and initialized at the moment of top dead point of the intake stroke or explosion stroke of the reference cylinder is produced based on the result of determination.

Armel Petit Bonn
Jean-Marc Ornebuelle

JP15231693A

February 25, 2002

June 23, 1993

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Renault

F02B77/08; F02D41/00; F02D41/06; F02D41/34; F02D41/36; F02D45/00; F02B75/02; F02B75/18; (IPC1-7): F02D41/06; F02D41/36; F02D45/00

JP4164144A

Junnosuke Nakamura

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