Fuel vapor leakage inspection apparatus

Details Fuel vapor leakage inspection apparatus Fuel vapor leakage inspection apparatus

2005-09-20

2005-09-20

Garber, Charles (Department: 2856)

Measuring and testing

With fluid pressure

Motor part or auxiliary

Reexamination Certificate

active

06945093

ABSTRACT:
A fuel vapor leakage inspection apparatus utilizes a fuel tank, an adsorption container which houses an adsorbent for adsorbing fuel vapor generated in the fuel tank, and an exhaust device for communicating between the adsorption container and an intake pipe. Furthermore, the apparatus utilizes a pressure means that pressurizes or depressurizes a fuel vapor path formed from the fuel tank through the adsorption container to the exhaust device. A leakage detection means detects leakage from the fuel vapor path after the fuel vapor path is pressurized or depressurized by the pressure means while a calculation means calculates an amount of fuel vapor adsorbed, and a control means determines if the pressure means should execute leakage inspection of the fuel vapor path in accordance with the amount of the fuel vapor calculated by the calculation means.

REFERENCES:
patent: 5347971 (1994-09-01), Kobayashi et al.
patent: 5890474 (1999-04-01), Schnaibel et al.
patent: 6305361 (2001-10-01), Takaku et al.
patent: 6550315 (2003-04-01), Streib
patent: 6679111 (2004-01-01), Shigihama et al.
patent: 6848298 (2005-02-01), Miyahara et al.
patent: 11-351078 (1999-12-01), None
Hideaki et al., Patent Pub. Nr. 11-351078, with English Language abstract and Machine Translation.

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