Apparatus for checking the tightness of a tank venting system

Details Apparatus for checking the tightness of a tank venting system Apparatus for checking the tightness of a tank venting system

1994-09-30

1996-09-10

Miller, Carl S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123520, F02M 3704

Patent

active

055535771

ABSTRACT:
An apparatus for checking a tank venting system for leaks that serves to vent a fuel tank of a motor vehicle whose engine has a intake tube. The apparatus has an absorption filter connected to a ventilation line, which can be closed by means of a shutoff valve, and pressure producing devices for the production of an overpressure in the fuel tank. The pressure producing devices are embodied as actuatable by means of the vacuum in the intake tube in order to be able to forego the separate electromechanical drive devices for the pressure producing devices which have been necessary in the prior art.

REFERENCES:
patent: 2753804 (1956-07-01), Goss
patent: 4085586 (1978-04-01), Shibata
patent: 4086897 (1978-05-01), Tamura
patent: 4463554 (1984-08-01), Sodeck
patent: 5056493 (1991-10-01), Holzer
patent: 5146902 (1992-09-01), Cook
patent: 5261379 (1993-11-01), Lipinski
patent: 5349935 (1994-09-01), Mezger
patent: 5363828 (1994-11-01), Yamashita
patent: 5383438 (1995-01-01), Blumenstock

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