Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Patent
1995-03-15
1997-01-14
Miller, Carl S.
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
123516, F02M 3302
Patent
active
055929222
ABSTRACT:
In the venting apparatus (1) according to the invention, a first, small-volume adsorption filter (4) is accommodated in the front area of a motor vehicle, in the region of the internal combustion engine and a second, large-volume adsorption filter (5) is accommodated in the region of a fuel tank (2). The fuel vapors evolved in the fuel tank (2) are introduced into the second adsorption filter (5) via a tank conduit (10) and into the first adsorption filter (4) via a connecting conduit (11) and, after flowing through the latter, into an intake pipe (20) of the internal combustion engine. The large-volume embodiment of the second adsorption filter (5) ensures that the fuel vapors evolved are reliably retained, and heating of the first adsorption filter (4) ensures that abrupt changes in the fuel/air mixture fed to the internal combustion engine are avoided.
REFERENCES:
patent: 4279233 (1981-07-01), Tobita
patent: 4300511 (1981-11-01), Lang
patent: 4598686 (1986-07-01), Lupoli
patent: 4887578 (1989-12-01), Woodcock
patent: 5386811 (1995-02-01), Rochette
Greigg Edwin E.
Greigg Ronald E.
Miller Carl S.
Robert & Bosch GmbH
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