Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1980-04-17
1982-08-24
Lazarus, Ronald H.
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
123573, F02M 2314
Patent
active
043455735
ABSTRACT:
A blow-by gas treating and controlling system in which blow-by gas accumulated in the crank chamber of an internal combustion engine is induced by means of the vacuum generated at a portion of the throttle barrel of the carburetor above the throttle valve, the level of vacuum established in that region being proportional to the flow rate of the intake mixture. The blow-by gas is then mixed with the fresh air-fuel mixture and burnt together with the latter. Generation of an excessively high vacuum in the crankcase, which may take place when the rate of generation of the blow-by gas is small, is avoided because of the presence of a bleed pipe which is connected between the blow-by gas treating pipe and the air cleaner of the engine and adapted to supply suplementary air to the blow-by gas through orifice. Also, an excessively high pressure generated in the crank chamber is relieved through this bleed pipe which acts in this case as a safety by-pass passage.
REFERENCES:
patent: 1635007 (1927-07-01), Orem
patent: 3272192 (1966-09-01), Jensen et al.
patent: 3500806 (1970-03-01), Sarto
patent: 4089311 (1978-05-01), Brettschneider
patent: 4262639 (1981-04-01), Motosugi
Lazarus Ronald H.
Toyota Jidosha Kogyo Kabushiki Kaisha
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