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1. (WO2017187042) METHOD FOR DIAGNOSING THE OPERATION OF A MOTOR VEHICLE DIESEL ENGINE INJECTOR

Pub. No.:    WO/2017/187042    International Application No.:    PCT/FR2017/050857
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Tue Apr 11 01:59:59 CEST 2017
IPC: F02D 41/22
F02D 41/24
F02B 77/08
Applicants: CONTINENTAL AUTOMOTIVE FRANCE
CONTINENTAL AUTOMOTIVE GMBH
Inventors: LEBLON, Michael
Title: METHOD FOR DIAGNOSING THE OPERATION OF A MOTOR VEHICLE DIESEL ENGINE INJECTOR
Abstract:
The subject of the present invention is a method for diagnosing the operation of an injector of a diesel engine of a vehicle controlled by a plurality of control laws on the basis of at least one injector operating parameter for each control law. The method comprises a step (E2) of measuring a value of an operating parameter during use of the injector, a step (E3) of determining a value for the effectiveness of each control law on the basis of the measured value of the parameter and of a predetermined reference curve representing the effectiveness of the parameter in its range of operating values, and a step (E4) of determining a value for the effectiveness of the injector on the basis of the effectiveness value for each of the control laws.