Starting system for diaphragm carburetor

Details Starting system for diaphragm carburetor Starting system for diaphragm carburetor

1997-10-02

1999-12-14

Atgenbright, Tony M.

Internal-combustion engines

Starting device

With fuel or intake air control

261 63, F02M 104

Patent

active

060003693

ABSTRACT:
The object of the present invention is to easily provide an appropriate amount of starting fuel for all-purpose engines, without requiring any special skill. The upstream side and downstream side of a throttle valve in an air intake passage are connected by a bypass. This bypass and a constant-fuel chamber are connected by an increased-fuel passage which is equipped with a check valve. The system is arranged so that the bypass and increased-fuel passage are opened and closed more or less simultaneously by an opening-and-closing valve. The necessary amount of starting fuel can be supplied to the engine in a short time by means of the increased-fuel passage, so that starting can be accomplished by cranking the engine a few times. The flow of air into the constant-fuel chamber from the bypass is prevented by the check valve so that rough idling and the need to expel inflowing air are eliminated; and starting operations may be performed in any desired order.

REFERENCES:
patent: 2896599 (1959-07-01), Ensign
patent: 3835831 (1974-09-01), Ross
patent: 4085720 (1978-04-01), Etoh
patent: 4271093 (1981-06-01), Kobayashi
patent: 4276238 (1981-06-01), Yoshikawa et al.
patent: 4646691 (1987-03-01), Kiyota et al.
patent: 4862848 (1989-09-01), Kobayashi et al.
patent: 4936267 (1990-06-01), Gerhardy et al.

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