Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1979-01-19
1980-07-15
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
123586, 261 64C, F02M 3302, F02M 3700
Patent
active
042122767
ABSTRACT:
In combination with an internal combustion engine having a throttle valve disposed in an intake manifold, an evaporative emission control device for controlling the emission to the atmosphere of fuel vapors from an internal combustion engine fuel system which comprises an air cleaner housing having a primary air intake conduit, a gating valve operatively disposed in the primary air intake conduit for selectively opening and closing the primary air intake conduit, a diaphragm valve assembly for bringing the gating valve means in position to open the primary air intake duct when a negative pressure developed in the intake manifold is induced in a working chamber, a fluid passage extending between the working chamber and the intake manifold, and a delay unit operable, when the negative pressure in the intake manifold decreases, for delaying a corresponding decrease of the once-induced negative pressure in the working chamber for a predetermined time to maintain the gating valve in the opened position.
REFERENCES:
patent: 3368326 (1968-02-01), Herbert
patent: 3540423 (1970-11-01), Tolles
patent: 3561412 (1971-02-01), Yagi
patent: 3678912 (1972-07-01), Heusler
patent: 3683878 (1972-08-01), Rogers
patent: 3888223 (1975-06-01), Mondt
patent: 4013054 (1977-03-01), Balsley
patent: 4059088 (1977-11-01), Tateno
patent: 4060063 (1977-11-01), Hirasawa
patent: 4062910 (1977-12-01), Rogerson
patent: 4144852 (1979-03-01), Kawai
Miller Carl Stuart
Myhre Charles J.
Toyo Kogyo Co. Ltd.
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