Two-cycle combustion engine

Details Two-cycle combustion engine Two-cycle combustion engine

2006-08-29

2006-08-29

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Two-cycle

Rear compression

Reexamination Certificate

active

07096834

ABSTRACT:
To provide a two-cycle combustion engine of a simplified structure with the number of component parts reduced, which is effective to suppress a blow-off of the air/fuel mixture and is excellent in acceleration, the two-cycle combustion engine includes scavenging passages communication between a combustion chamber and a crank chamber, an air/furl mixture passage for introducing an air/fuel mixture from a fuel supply device to the crank chamber, and a branch passage ramified off from the air/fuel mixture passage for supplying a lean air/fuel mixture into the scavenging passages. During an intake stroke, the lean air/fuel mixture from the branch passage is introduced into the scavenging passages and the air/fuel mixture is introduced from the air/fuel mixture passage into the crank chamber. During a scavenging stroke, the lean air/fuel mixture is supplied from the scavenging passages into the combustion chamber prior to introduction of the air/fuel mixture.

REFERENCES:
patent: 6591793 (2003-07-01), Nemoto et al.
patent: 6634326 (2003-10-01), Radel et al.
patent: 2000-136755 (2000-05-01), None

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