Internal-combustion engines – Frame construction – Horizontal cylinder
Patent
1985-11-27
1988-06-28
Feinberg, Craig R.
Internal-combustion engines
Frame construction
Horizontal cylinder
123195C, 123196R, F02F 700, F01M 100
Patent
active
047532017
ABSTRACT:
A crankshaft supporting structure in a multicylinder internal combustion engine has a cylinder block made of a light alloy and including a cylinder housing and a crankcase having a plurality of spaced journal walls. A plurality of spaced bearing caps made of an iron alloy are coupled respectively to the journal walls. A crankshaft is rotatably supported in bearing holes defined by the journal walls and the bearing caps. A bridge made of a light alloy extends across the bearing caps and is coupled to the bearing caps. The bearing caps and the bridge are fastened together to the journal walls by connecting bolts disposed one on each side of the crankshaft. The bridge has a main portion defining a main gallery extending longitudinally therethrough and a plurality of legs coupled to the bearing caps, respectively. The bearing caps and the legs jointly define branch oil passages communicating with the main gallery and the bearing holes. In one embodiment, each of the oil passages has a longitudinal central axis displaced transversely from the central axis of the cylinder housing passing through the center of the crankshaft.
REFERENCES:
patent: 3304134 (1967-02-01), Allen
patent: 4467755 (1984-08-01), Hayashi
patent: 4622933 (1986-11-01), Fukuo et al.
Anno Nobuo
Chosa Masatoshi
Fukuo Koichi
Kazama Akio
Kusakabe Yukio
Feinberg Craig R.
Honda Giken Kogyo Kabushiki Kaisha
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