Measuring and testing – With fluid pressure – Leakage
Patent
1996-03-18
1997-10-07
Brock, Michael
Measuring and testing
With fluid pressure
Leakage
73 492, 73 497, G01M 332, G01M 326
Patent
active
056750730
ABSTRACT:
A device for detecting leakage of fuel vapor including a pressure sensor which is arranged in a fuel vapor conduit connected to the fuel tank. The pressure sensor detects the pressure inside the fuel tank. It is judged that the fuel vapor has not leaked from the fuel tank or the fuel vapor conduit before the engine is stopped based on the pressure inside the fuel tank detected by the pressure sensor and it is judged that the reattachment of the fuel cap has been forgotten when it is judged that the fuel vapor is leaking from the fuel tank when the operation of the engine is restarted after stopping of the engine.
REFERENCES:
patent: 4583072 (1986-04-01), Matsushita
patent: 5408866 (1995-04-01), Kawamura et al.
patent: 5451927 (1995-09-01), Thompson
patent: 5467641 (1995-11-01), Williams et al.
Brock Michael
Toyota Jidosha & Kabushiki Kaisha
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