Positive crankcase ventilation system

Details Positive crankcase ventilation system Positive crankcase ventilation system

1989-09-13

1990-08-14

Dolinar, Andrew M.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

123572, 123196M, 123195H, F02M 2500

Patent

active

049478125

ABSTRACT:
A positive crankcase ventilation system for a V-type internal combustion engine has elongated first and second cylinder banks provided with first and second rows of cylinders offset, respectively, in a lengthwise direction to each other, thereby forming a dead corner on one end of each cylinder bank. A series of reinforcing bulk heads for reinforcing a series of main bearings holding a crankshaft divide a crankcase into a series of crankcase chambers. Each crankcase chamber is provided with a bottom opening and vent holes formed in the bulk head. An air introduction passage is provided by the side of and at the middle of each row of cylinders in the cylinder block for introducing filtered air into and through the crankcase and oil return passages are formed in each dead corner.

REFERENCES:
patent: 4493295 (1985-01-01), Ampferer
patent: 4603673 (1986-08-01), Hiraoka et al.
patent: 4656991 (1987-04-01), Fukuo et al.
patent: 4712532 (1987-12-01), Ura et al.
patent: 4838221 (1989-06-01), Suemori

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