Device for venting a fuel tank and a process for checking the fu

Details Device for venting a fuel tank and a process for checking the fu Device for venting a fuel tank and a process for checking the fu

1994-11-14

1996-10-01

Chilcot, Richard

Measuring and testing

Simulating operating condition

Marine

73 405R, 73 497, F02M 3704

Patent

active

055602436

ABSTRACT:
A venting device comprising connecting lines which are embodied as double-walled that form hollow spaces and whose hollow spaces communicate with one another and with an intake pipe by means of bypass lines. By means of a pressure sensor installed in a bypass line, the vacuum is measured; normally this vacuum must roughly correspond to the vacuum in the intake pipe and if this is the case, it can be concluded that the venting device is functional and tight. If there is a large increase in the vacuum measurement then it is concluded that there is a leak in the venting system. The venting device is particularly intended for use in motor vehicles.

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patent: 5425266 (1995-06-01), Fournier
patent: 5467641 (1995-11-01), Williams et al.

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