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1. (WO2017222451) METHOD FOR DETERMINING THE PROPER OPERATION OF A VALVE IN A GAS TANK SYSTEM

Pub. No.:    WO/2017/222451    International Application No.:    PCT/SE2017/050655
Publication Date: Fri Dec 29 00:59:59 CET 2017 International Filing Date: Tue Jun 20 01:59:59 CEST 2017
IPC: F02D 19/02
B60K 15/03
F02M 21/02
F17C 13/02
F02D 41/22
Applicants: SCANIA CV AB
Inventors: ECKERDAL, Mårten
LÖTHGREN, Svante
JOHANSSON, Magnus
SUNNEGÅRDH, Erik
Title: METHOD FOR DETERMINING THE PROPER OPERATION OF A VALVE IN A GAS TANK SYSTEM
Abstract:
The present disclosure relates to a method for determining the proper operation of a valve in a gas tank system. The gas tank system comprises a plurality of gas tank and valve arrangements. Each gas tank and valve arrangement comprises a gas tank and at least one valve arranged at a passage downstream said gas tank. The method comprises the steps of opening the valves at the passages in a first set of gas tank and valve arrangements; determining a first pressure value downstream all of said valves which have been opened; closing the passage at all gas tank and valve arrangements, except for one gas tank and valve arrangement; waiting a predetermined amount of time; determining a second pressure value downstream the gas and tank and valve arrangement whose valve(s) have not been closed; and determining whether said at least one valve which has not been closed operates properly based on said first and said second determined pressure value.