Method for monitoring a pressure sensor in a direct injection system

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United States of America Patent

PATENT NO 11415071
APP PUB NO 20210140384A1
SERIAL NO

17046588

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Abstract

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A method for monitoring a pressure sensor in a direct injection system including at least one common rail, a high-pressure fuel pump, a hydraulic circuit connecting the high-pressure pump to the common rail, a passive pressure-limiting valve connected to the hydraulic circuit, configured to open once the pressure in the hydraulic circuit is greater than a threshold pressure, so as to discharge the fuel, including the steps of detecting the opening of the pressure-limiting valve, measuring the pressure PMES corresponding to the time of opening of the pressure-limiting valve and comparing the measured pressure PMES to the threshold pressure P1 in order to detect a drift in the pressure sensor.

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Patent Owner(s)

Patent OwnerAddress
VITESCO TECHNOLOGIES GMBHSIEMENSSTRASSE 12 REGENSBURG 93055

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Agnus, Yves Toulouse, FR 8 10
Chia, Tet Kong Brian Toulouse, FR 13 21
Girard, Nicolas Toulouse, FR 24 984

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