LOW NOISE ENGINE

摘要: PURPOSE:To reduce the engine noise generated in a bearing part of crankshaft, by interposing circular ring unit between metal and journal crankshaft constructing oil layer clearances respectively on inner outer circumferential surfaces unit. CONSTITUTION:The inside diameter 3 is constructed dimension slightly larger than outside 4a 4. Between both 3, above, 5 interposed. The forms fine dimensional clearance its peripheral surface an while 6 installed to said 5. A b formed shaft Further ring-shaped grooves 7, 8 are 5, hole 9 linking those diametrically provided at oppositely angular position.