Internal-combustion engines – Miscellaneous – Fuels – lubricants and additives
Patent
1980-09-12
1982-03-02
Burns, Wendell E.
Internal-combustion engines
Miscellaneous
Fuels, lubricants and additives
123257, 123430, 123432, 123433, 123 65R, 123 65A, 123 69R, 123 73A, 123143R, 123143B, 123DIG4, F02B 1500, F02B 1700
Patent
active
043174329
ABSTRACT:
A method for operating a two-cycle internal combustion engine wherein in the scavenging stroke the air-fuel mixture charged into the cylinder forms a stratum adjacent to a piston and the stratum of the air-fuel mixture is made into contact with the stratum of the residual gases remote from the piston. Alternately, in the scavenging stroke the rich mixture is first charged into the cylinder immediately above the piston and then the lean mixture is charged into the cylinder immediately above the piston so that the strata of the lean and rich mixtures and the residual gases may be formed in the order named from a portion close to the piston within the cylinder. The decomposition of part of the air-fuel mixture or the rich air-fuel mixture is caused by the heat contained in the residual gases so that the chemically activated radicals are produced. In the compression stroke the air-fuel mixture or the rich air-fuel mixture containing these radicals is compressed to the compression ratio of between 4 and 10 and ignited and burned by the radicals mentioned above. The engine may operate with a low compression ratio. The engine may be made light in weight as compared with the diesel engines. The compression combustion is effected. The positive ignition may be ensured and the irregular and uncomfortable noise and vibration may be minimized. In addition, a considerable fuel economy may be attained and the emission of HC may be minimized. The two-cycle internal combustion engines adapted for carrying out the above method are also disclosed.
REFERENCES:
patent: 3363611 (1968-01-01), Von Seggern et al.
patent: 3923019 (1975-12-01), Yamada
patent: 3934562 (1976-01-01), Isaka
patent: 4126106 (1978-11-01), Witzky
S.A.E. Tech. Paper Series 790840, Sep. 10-13, 1979, Society of Automotive Engineers, Warrendale, Penna., 16 pages.
Noguchi Masaaki
Tanaka Taro
Tanaka Yukiyasu
Burns Wendell E.
Nippon Soken Inc.
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