Internal-combustion engines – Particular piston and enclosing cylinder construction – Cylinder detail
Patent
1977-07-07
1979-05-15
Myhre, Charles J.
Internal-combustion engines
Particular piston and enclosing cylinder construction
Cylinder detail
123 47R, 92183, 92185, 277 29, 277 73, F02F 328, F02F 500
Patent
active
041542070
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.
REFERENCES:
patent: 1778200 (1930-10-01), Nibbs
patent: 2064969 (1936-12-01), Carr et al.
patent: 2459447 (1949-01-01), Milliken
patent: 2557039 (1951-06-01), Stewart
patent: 2653065 (1953-09-01), Appleton
patent: 2774619 (1956-12-01), Mercier
Quillian et al., "Crankcase-Diversion Tactics," SAE Journal, May, 1964, pp. 50-56.
Feinberg Craig R.
Ford Motor Company
McCollum Robert E.
Myhre Charles J.
Zerschling Keith L.
LandOfFree
Piston and ring for reducing HC emissions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piston and ring for reducing HC emissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piston and ring for reducing HC emissions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1092868