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US 5,727,506 AGranted
Two-stroke internal combustion engine
AssigneeKioritz Corporation
InventorsKatsuya Tajima, Hiroaki Koga, Hiroji Kawasaki
Life of this patent
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Abstract
To avoid stalling of a two-stroke internal combustion engine as its orientation is changed upon a change of direction in which a working machine such as a chain saw is held, non-atomized fuel is prevented from flowing precipitously into the combustion chamber of the engine. The engine comprises a crank case forming a crank chamber which has an intake port opening into the crank chamber, and a flow control feature at the circumferential inner surface of the crank chamber in the vicinity of the intake port for retarding flow of non-atomized fuel.
Claims3
A two-stroke internal combustion engine comprising:
- a crank case forming a crank chamber and having an intake port opening into the crank chamber;
- a carburetor connected to said intake port via a lead valve;
- a crank shaft rotatably disposed in the crank chamber;
- and
- a flow control feature for retarding flow of non-atomized fuel, disposed at a circumferential inner surface of the crank chamber in the vicinity of the intake port opening and downstream from said lead valve.
2 more elements
Dependencies are inferred from the claim text.