Bearing arrangement for crankshaft of four-cylinder-in line engine for use in crank case, has five main crankshaft main bearings, where central bearing is formed as friction bearing

摘要

The bearing arrangement has five main crankshaft main bearings (10 to 14), where one of the five main crankshaft main bearings, particularly central bearing, is formed as friction bearing and rest are formed as antifriction bearing. Connecting rod bearings (15) of a crankshaft (1) are formed as friction bearings.