Two-stroke engine operation method and internal combustion two-s

Details Two-stroke engine operation method and internal combustion two-s Two-stroke engine operation method and internal combustion two-s

1999-01-08

2000-05-23

Kwon, John

Internal-combustion engines

Two-cycle

Whirl through piston-controlled ports

123 65P, F02D 3904

Patent

active

060654325

ABSTRACT:
The present invention relates to operation processes of two-stroke engines. A two-stroke engine uses a slide valve (10) so that the inlet-outlet passage (9) connected to the exhaust manifold (18) may be connected to the inlet pipe after the outlet of exhaust gases from the cylinder (4). A fresh load is then introduced into the cylinder (4) simultaneously through a scavenging port (6) connected to the crankshaft chamber (2) by a scavenging passage, and through an inlet-outlet port (8) connected to the inlet pipe. The crankshaft chamber (2) is filled when the piston (5) moves from the bottom dead center after the port (8) is opened at its lower edge. Practically continuous feeding of fresh loads into a single-cylinder engine can thus be achieved. The increase in the time-section ration of the gas distribution organs ensures maximum filling of the cylinder (4) while reducing the time therefor and the losses to a minimum. The heat, which is emitted at the surface of the hottest parts after the outlet, is instantaneously eliminated by the cold fresh loads passing therethrough.

REFERENCES:
patent: 4516540 (1985-05-01), Nerstom
patent: 4660514 (1987-04-01), Nerstrom
patent: 5072699 (1991-12-01), Pien
patent: 5081961 (1992-01-01), Paul et al.
patent: 5261359 (1993-11-01), Hull
patent: 5379732 (1995-01-01), Mavinahally et al.

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