Internal-combustion engines – Combined devices – Generating plants
Patent
1974-05-15
1976-08-31
Croyle, Carlton R.
Internal-combustion engines
Combined devices
Generating plants
60901, 123 805, F02B 5310
Patent
active
039773680
ABSTRACT:
A rotary piston engine comprises a housing having a trochoidal peripheral wall and side walls on both sides thereof, a rotor adapted to perform a planetary rotary motion along the inner surface of the peripheral wall and intake and exhaust ports formed in the housing. The engine performs intake, compression, combustion and exhaust of a working fluid by means of the planetary rotary motion of the rotor. An air injection port is formed in the peripheral wall of the housing between the exhaust port and a portion of the peripheral wall through which the minor axis of the trochoidal curve extends. A means is provided to supply air through the air injection port into the housing to prevent recirculation of exhaust gas into the intake chamber of the engine, stratify an air-fuel mixture of a richness appropriate for spark ignition and a lean air-fuel mixture with a resultant combustion of the stratified mixtures and reduce harmful exhaust gases, particularly, hydrocarbon (HC) and carbon monoxide (CO) by means of the engine operation with a relatively lean air-fuel mixture.
REFERENCES:
patent: 3136302 (1964-06-01), Nallinger et al.
patent: 3483849 (1969-12-01), Yamamoto
patent: 3722493 (1973-03-01), Hartmann et al.
patent: 3732696 (1973-05-01), Masaki
patent: 3780707 (1973-12-01), Cole
patent: 3791145 (1974-02-01), Yamamoto
patent: 3817220 (1974-06-01), Brumm et al.
Hujita Masami
Igashira Toshihiko
Yamaguchi Shunzo
Croyle Carlton R.
Koczo, Jr. Michael
Nippon Soken Inc.
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