Four-stroke internal combustion engine with contaminated oil eli

Details Four-stroke internal combustion engine with contaminated oil eli Four-stroke internal combustion engine with contaminated oil eli

1994-05-19

1995-10-10

Okonsky, David A.

Internal-combustion engines

Four-cycle

Crankcase compression of air or combustible mixture to be...

123196W, F02B 3306, F01M 300

Patent

active

054562309

ABSTRACT:
Disclosed herein is a four-stroke internal combustion engine including a cylinder, a device for feeding fuel to the cylinder, a sealed crankcase chamber associated with the cylinder, a piston reciprocally movable in the cylinder and relative to the crankcase chamber to effect alternation of the pressure therein in response to piston reciprocation, an oil sump adapted to contain lubricating oil, a conduit system for recirculating oil from the sump to the crankcase chamber and from the crankcase chamber to the sump in response to alternation of the pressure in said crankcase chamber, an oil pump communicable with the oil sump and with the fuel feeding means, and a conduit operably connected to the oil pump and to the crankcase chamber so as to effect delivery of oil from the sump to the fuel feeding device in response to alternation of the pressure in the crankcase chamber.

REFERENCES:
patent: 4381741 (1983-05-01), Walsworth
patent: 4417561 (1983-11-01), Yasuhara
patent: 4421078 (1983-12-01), Hurner
patent: 4473340 (1984-09-01), Walsworth
patent: 4599979 (1986-07-01), Breckenfeld et al.
patent: 4611559 (1986-09-01), Sumigawa
patent: 4674456 (1987-06-01), Merritt
patent: 4825825 (1989-05-01), Chino et al.
patent: 4869346 (1989-09-01), Nelson
patent: 5163394 (1992-11-01), Koishikawa et al.

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