Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1998-08-17
2000-09-05
Yuen, Henry C.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123198D, F02M 3304, G01M 1500
Patent
active
061127280
ABSTRACT:
A device for diagnosis of a tank ventilation system of a vehicle, including a tank, an adsorption filter that communicates with the tank by way of a tank connection line and has a ventilation line, a tank ventilation valve that communicates with the adsorption filter by way of a valve line, and an on-board pressure source, by means of which the tank ventilation system can be acted upon with a pressure. A shut-off device is provided that only opens when the tank ventilation system is acted on with pressure by means of the on-board pressure source and closes when the tank ventilation system is acted on with pressure by means of a pressure source connected externally for the purpose of functionality testing.
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Blumenstock Andreas
Schwegler Helmut
Castro Arnold
Greigg Edwin E.
Greigg Ronald E.
Robert & Bosch GmbH
Yuen Henry C.
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