Patent ID: 6422193
Filing Date: 2002-07-23
Classification: F02B,F02F

Abstract:
A crank shaft support structure of an engine comprising:a crank case; a crank shaft penetrating through the crank case and provided with a belt converter connected to one end portion thereof; a double row ball provided on a side wall of the crank case which is close to the belt converter; and a plain bearing provided on a side wall of the crank case which is away from the belt converter, wherein the crank shaft includes crank webs, a crank pin, and crank journals, the crank pin and the crank webs are accommodated in the crank case, the crank pin is situated between the crank webs and a large end portion of a connecting rod is connected to the crank pin, the crank journals are formed such that they extend from side portions of the crank webs in the axial direction of the crank shaft, the double row ball bearing rotatably supports one of the crank journals, and the plain bearing rotatably supports the other of the crank journals.