Internal-combustion engines – Engine speed regulator – Charge volume varying
Patent
1995-10-25
1997-09-02
Wolfe, Willis R.
Internal-combustion engines
Engine speed regulator
Charge volume varying
12318456, F02M 3510, F02D 918
Patent
active
056620861
ABSTRACT:
In order to obviate the drawbacks of fluid-dynamic character which affect the traditional carburators equipped with control valves of throttle or of guillotine type, the carburation device provides for the feed duct to be a tubular portion made of an elastic material constrained at its ends and that at least one pair of relatively movable blades act on the elastic feed duct on its outer surface, squeezing it in a perpendicular direction relatively to its axis. The surface area of the cross-section of the inner bore of the duct varies taking (relatively to the fuel stream flowing through it) a gradually convergent-divergent shape, i.e., without sharp changes in the inner bore cross-section surface area, and the fuel stream therefore has a fluid-dynamically optimal motion which is independent from the actual revolution speed of the engine.
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