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1. (WO2017187034) METHOD FOR CONTROLLING THE CUTTING-OFF OF INJECTION WHEN A COMBUSTION ENGINE IS STOPPED

Pub. No.:    WO/2017/187034    International Application No.:    PCT/FR2017/050561
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Tue Mar 14 00:59:59 CET 2017
IPC: F02D 41/04
F02D 41/12
F02D 11/10
Applicants: PSA AUTOMOBILES S.A.
Inventors: PIRAS, Pierre Xavier
Title: METHOD FOR CONTROLLING THE CUTTING-OFF OF INJECTION WHEN A COMBUSTION ENGINE IS STOPPED
Abstract:
The invention relates mainly to a method for controlling the cutting-off of injection (C_Inj) when a combustion engine is stopped, said method comprising, following a request to stop the combustion engine: – a step of determining an injection cut-off time limit by taking into consideration a temperature of the coolant and an atmospheric pressure, this being performed by implementing a mapping providing a threshold duration compared with a time elapsed since the request to stop the engine, and by taking into consideration a dispersion of an air metering device and the time derivative thereof by implementing a mapping providing a threshold position of said air metering device compared with its actual position, and – a step of cutting off injection (C_Inj) when the injection cut-off time limit previously determined has elapsed.