Carburetor for an internal combustion engine of a hand-held working tool
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United States of America Patent
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-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Feb 9, 1996
filing date -
Feb 10, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A carburetor for an internal combustion engine of a hand-held working tool has a housing and a suction channel with a venturi section arranged in the housing. The suction channel has an inlet and an outlet for allowing air flow therethrough. A throttle is connected in the suction channel so as to be pivotable. A control chamber is provided and a main fuel channel connects the suction channel and the control chamber. An idle fuel channel connects the suction channel and the control chamber. A bypass, having an air supply line and a fuel supply line, is provided for introducing an auxiliary fuel/air mixture during a starting operation of the internal combustion engine to a location of the suction channel downstream of the throttle in a direction of air flow. A closure device for separately closing off in a closed position of the piston the air supply line and the fuel supply line of the bypass is provided so that simultaneously the fuel supply and air supply are shut off before formation of the auxiliary fuel/air mixture.
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