Internal-combustion engines – Two-cycle – Rear compression
Patent
1982-07-13
1984-05-01
Burns, Wendell E.
Internal-combustion engines
Two-cycle
Rear compression
123 65R, 123 73R, 123 73B, 123 73D, 123 73PP, 123 73S, 123324, F02B 3304
Patent
active
044454686
ABSTRACT:
A 2-stroke engine having a combustion chamber and a scavenge port which is open to the combustion chamber. When the engine is operating under a light load in which a large amount of unburned components, incompletely burned components and oxygen remains in the combustion chamber, fresh air is fed into the combustion chamber from the scavenge port at a low speed so that the fresh air does not disturb the residual gas in the combustion chamber. As a result of this, oxidation of the unburned components and the incompletely burned components continues without interruption during the expansion stroke and the compression stroke and causes self-ignition of the residual gas at the end of the compression stroke. The self-ignited residual gas causes ignition of the fuel injected into the combustion chamber from a fuel injector.
REFERENCES:
patent: 1600795 (1926-09-01), Cage
patent: 1780635 (1930-11-01), Spencer
patent: 3817227 (1974-06-01), Onishi
patent: 4185598 (1980-01-01), Onishi
patent: 4204488 (1980-05-01), Onishi
patent: 4213431 (1980-07-01), Onishi
patent: 4237831 (1980-12-01), Noguchi et al.
patent: 4341188 (1982-07-01), Nerstrom
Jo Souk H.
Onishi Sigeru
Burns Wendell E.
Nippon Clean Engine Research Institute Co., Ltd.
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