Two-cycle engine

Details Two-cycle engine Two-cycle engine

1996-09-18

1997-09-30

Okonsky, David A.

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 65W, F02B 7540

Patent

active

056717032

ABSTRACT:
A number of embodiments of two-cycle engines employing Schnurle-type scavenging. In addition, a tumble port is also incorporated so as to introduce a tumble charge into the combustion chamber and reduce the likelihood of fresh charge from exiting from the exhaust port. This tumble charge may be utilized to achieve stratification, and the fuel charge may be delivered to the combustion chamber through the tumble port or in proximity to it. Also, arrangements are shown for controlling the amount of tumble flow.

REFERENCES:
patent: 4638770 (1987-01-01), Fox
patent: 4821687 (1989-04-01), Iwai
patent: 5007384 (1991-04-01), Blair
patent: 5040496 (1991-08-01), Plohberger et al.
patent: 5065711 (1991-11-01), Lesley
patent: 5065712 (1991-11-01), Hundleby
patent: 5205245 (1993-04-01), Flack et al.
patent: 5213069 (1993-05-01), Curtil
patent: 5251580 (1993-10-01), Torigai
patent: 5311848 (1994-05-01), Isaka et al.
patent: 5490483 (1996-02-01), Tanikake et al.

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