Patent ID: 6491438
Filing Date: 2002-12-10
Classification: F16C

Abstract:
A main bearing for an engine, said bearing supporting a crankshaft of the engine on which a radial load always operates in a single direction from tension of a belt transmitting rotation from said crankshaft,said main bearing comprising a first half bearing and a second half bearing, wherein said belt applies a radial load to said crankshaft to bias said crankshaft toward said first half bearing when said crankshaft is not rotating, said load applied by said belt being in a direction opposite to a force applied to said crankshaft from combustion pressure of the engine when said crankshaft is rotating, said first half bearing having an oil pocket provided in the surface of said plain bearing to provide means for storing lubricant therein when said crankshaft is not rotating, and wherein said second half bearing has no oil pocket in a zone thereof against which said crankshaft is forced when said crankshaft is rotating.