Title:
STRUCTURE OF REDUCING MATTER OF DISCHARGING HYDROCARBON
Document Type and Number:
Japanese Patent JPS5417406
Kind Code:
A
Abstract:
An internal combustion engine is provided with pistons having openings connecting the space behind one of the piston rings with the crankcase during certain portions of the operating cycle of the engine. This is accomplished by the use of a differential pressure control valve that vents the unburned hydrocarbons trapped behind the compression ring to the crankcase during periods when the pressure in the combustion chamber is at the lower values during the internal combustion engine operating cycle. These unburned hydrocarbons are, therefore, directed into the crankcase of the engine rather than being permitted to leak back into the combustion chamber and to be discharged into the atmosphere during the exhaust stroke of the engine.
Inventors:
UEIN MIRAA BUREOBU
Application Number:
JP7710178A
Publication Date:
February 08, 1979
Filing Date:
June 27, 1978
Export Citation:
Assignee:
FORD MOTOR CO
International Classes:
F02F3/00; F02B23/00; F02F3/28; F16J9/08; (IPC1-7): F02B23/00; F02F5/00