Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports
Patent
1997-07-02
1999-01-05
Okonsky, David A.
Internal-combustion engines
Two-cycle
Whirl through piston-controlled ports
123323, F02B 7502
Patent
active
058551891
ABSTRACT:
An exhaust controller includes an exhaust control valve. The exhaust controller is capable of adjusting an exhaust timing of a spark ignition type, two stroke internal combustion engine depending upon the rotational speed of the engine. The exhaust control valve has a structure and operation which greatly reduces exhaust leakage past the exhaust control valve. As a result, the scavenging efficiency and the charging efficiency are improved and the compression ratio of the engine is better maintained. In operation, the exhaust control valve maintains a relatively consistent cross-section throughout the exhaust gas flow passage. As a result, exhaust pressure is decreased, resulting in an increase in the output and efficiency of the engine.
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Honda Giken Kogyo Kabushiki Kaisha
Okonsky David A.
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