Evaporative fuel recovery apparatus

Details Evaporative fuel recovery apparatus Evaporative fuel recovery apparatus

1992-03-30

1993-03-16

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55267, 55387, B01D 5304

Patent

active

051940752

ABSTRACT:
An evaporative fuel recovery apparatus includes a purge line, coupled to a fuel tank and a canister, for feeding fuel vapor, evaporated in the fuel tank, into the canister, the canister containing an adsorbent for storing the fuel vapor from the fuel tank therein, a return fuel line, coupled to an intake passage and the fuel tank, for feeding excess fuel, remaining in the fuel return passage and not injected into the intake passage, back to the fuel tank, a vacuum pump provided in the fuel return passage, the vacuum pump generating vacuum pressure due to a flow of the excess fuel being fed back to the fuel tank through the fuel return passage. The vacuum pressure generated by the vacuum pump forcing returning fuel vapor flowing through the purge passage back to the fuel tank via a vapor return line coupled to the vacuum pump and the purge passage.

REFERENCES:
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patent: 3854911 (1974-12-01), Walker
patent: 3934989 (1976-01-01), Haugen
patent: 4430099 (1984-02-01), Yanagisawa et al.
patent: 4714485 (1987-12-01), Covert et al.
patent: 4869739 (1989-09-01), Kanome et al.
patent: 4872439 (1989-10-01), Sonoda et al.
patent: 4887578 (1989-12-01), Woodcock et al.
patent: 4919103 (1990-04-01), Ishiguro et al.
Transaction No. 90171 ("Zireishu") of Japan Automotive Manufacturers Association, Inc. (JAMA), published Mar. 18, 1991.

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