Internal-combustion engines – Lubricators – Crankcase – pressure control
Patent
1994-04-28
1995-11-14
Yuen, Henry C.
Internal-combustion engines
Lubricators
Crankcase, pressure control
123196S, F01M 1102
Patent
active
054656931
ABSTRACT:
Air-cooled reciprocating engines usually have a lubrication and cooling oil system providing positive oil delivery to a valve operating mechanism above the cylinder heads and a gravity flow return to the crankcase. In many such engines, the flow return channels are bored or cast conduits within the cylinder jacket structure which surrounds the piston guiding cylinder sleeve. These cylinder jackets are assembled to the engine crankcase by several long drawbolts which clamp each jacket between the respective head and the crankcase. Cylinder jacket bases have turned cylindrical surfaces which socket into a corresponding bore in the crankcase against an annular face. The socket relationship between the jacket base and crankcase positionally confines the jacket base literally relative to the crankcase. Locator pins bridging the interface between the jacket and crankcase secure the jacket from rotation within the crankcase socket. A gasket compressed between the annular face at cylinder jacket base and a corresponding crankcase face is provided with an aperture to pass the crankcase return oil flow from the jacket drain conduit into a crankcase receiver conduit. To prevent oil from accumulating on mismatched edges and seeping past the gasket, a flexible conduit shunt tube axially extends from a threaded socket head screwed into the lower end of the jacket drain conduit with the tube extending past the interface and into the crankcase conduit.
REFERENCES:
patent: 1407442 (1922-02-01), Saives
patent: 2241211 (1941-05-01), Mack
patent: 3824973 (1974-07-01), Harhaus
patent: 4392464 (1983-07-01), Woodward et al.
patent: 4630580 (1986-12-01), Sawaki et al.
patent: 4649873 (1987-03-01), Amano
patent: 4688529 (1987-08-01), Mitadera et al.
patent: 4944265 (1990-07-01), Davey
patent: 4947812 (1990-08-01), Inoue et al.
patent: 5074379 (1991-12-01), Batrice
patent: 5113818 (1992-05-01), Bonde et al.
patent: 5228536 (1993-07-01), Mohns
Solis Erick
Yuen Henry C.
LandOfFree
Motorcycle engine improvement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motorcycle engine improvement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motorcycle engine improvement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1214510