Internal-combustion engines – Additional air supply
Patent
1988-02-03
1989-07-18
Okonsky, David A.
Internal-combustion engines
Additional air supply
123 73V, 60314, F02B 3900
Patent
active
048482790
ABSTRACT:
A round pipe being rotatably mounted in a round hole seat adjacent to the exhausting port on the cylinder block of a two-stroke engine; the round hole seat has two passages being in communication with the exhausting port and the crankcase. The round pipe has a slot, which can align with the aforesaid two passages respectively upon the round pipe rotating so as to have the round pipe become communicating with the exhausting port or the crankcase; the time of that communicating state is synchronous with the later period of exhausting and the ending of intake into the crankcase. The inside of the round pipe is fed with compressed air, therefore, the compressed air blowing towards the exhausting port during the later period of exhausting forms a screen to prevent the fresh gas from flowing out together with the waste gas exhausted or even reversely inject air into the cylinder for increasing the gas pressure in the cylinder. Upon the ending of gas feeding into the crankcase, additional air is injected therein to increase the pressure in the crankcase. By means of the aforesaid air screen and pressure increasing method, advantages, such as reducing fuel lost, to elevate the combustion efficiency and to lower the pollution caused by exhausted gas, can be obtained.
REFERENCES:
patent: 1130419 (1915-03-01), Miller
patent: 1804321 (1931-05-01), Crowe
patent: 2131957 (1938-10-01), Kadenacy
patent: 4191141 (1980-03-01), Franke
patent: 4318373 (1982-03-01), Soubis
Industrial Technology Research Institute
Okonsky David A.
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