Internal-combustion engines – Two-cycle – Whirl through piston-controlled ports
Patent
1982-02-08
1984-02-14
Koczo, Michael
Internal-combustion engines
Two-cycle
Whirl through piston-controlled ports
123 73AF, 123 73S, 123197R, F02B 3324
Patent
active
044309678
ABSTRACT:
The invention engine comprises a compressor with a rotary piston in a cylinder bore in a stator and a U-shaped box-like combustion-expansion compartment, conveniently called a U-box, immediately above and riding on the rotary piston, the U-box and the compressor unit contained between the same parallel end walls. The rotary piston is eccentrically mounted on a shaft which is concentric with the cylinder bore and is supported in bearings in the end walls. A wiper blade is fitted in a groove across the piston head to yieldably sweep the cylinder bore to generate a suction stroke behind it, drawing in air via a one-way inlet port in the perimeter of the cylinder, and a compression stroke ahead of it to compress the air drawn in during the preceding suction stroke. The U-box is in the shape of a rectangular plate bent upward at two places to form two parallel vertical sides of equal height and a base plate between them. It is closed on its ends by the end walls, between which it reciprocates; it is closed above by a fixed casting to form a compression head; and its vertical sides recede into channels in the stator as the piston forces it upward on the upward compression stroke, the piston at the same time compressing air into the U-box via one-way inlet ports in the box's counter-clockwise face. A combustion-expansion chamber is formed between the inside of the U-box and the compression head. A fuel injector and a glow plug ignite a fuel charge when the piston head is near top center, and expanding gases force the U-box downward from the compression head, causing the eccentric piston to rotate. Parts through the stator on a level with the combustion chamber vent the engine as the vertical sides of the U-box drop downward past them and uncover them, at the end of the power stroke, the U-box sides re-covering them on their next upward compression stroke.
REFERENCES:
patent: 867782 (1907-10-01), Bayer
patent: 1763959 (1930-06-01), Finch
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