Two-cycle engine with forward scavenging air positioning and...

Details Two-cycle engine with forward scavenging air positioning and... Two-cycle engine with forward scavenging air positioning and...

2006-09-05

2006-09-05

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Two-cycle

Rear compression

Reexamination Certificate

active

07100551

ABSTRACT:
A two-cycle engine1is provided and has a cylinder in which is formed a combustion chamber that is delimited by a piston which, via a connecting rod, drives a crankshaft rotatably mounted in a crankcase. The engine has an air duct that communicates with a transfer channel, and a mixture channel via which fuel/air mixture is drawn into the crankcase. At least a portion of the length of the mixture channel is separated from the air duct by a dividing wall that extends in a direction of flow of the air. The dividing wall separates the channels from one another in such a way that the ratio of the cross-sectional area of the mixture channel to the cross-sectional area of the air duct is approximately in the range of 0.5 to 1.9.

REFERENCES:
patent: 6101991 (2000-08-01), Glover
patent: 6889637 (2005-05-01), Rosskamp

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