Patent ID: 8485155
Filing Date: 2013-07-16
Classification: F01M,F02B,F16F

Abstract:
1. An internal combustion engine, comprising: a crankcase; a crankshaft rotatably supported in the crankcase, said crankshaft including a drive sprocket attached thereto; a cam chain engaging the drive sprocket; a cam chain chamber housing at least a part of the drive sprocket and cam chain therein, said cam chain chamber configured to pool oil in a lower portion thereof; a balancer coupled to the crankshaft and configured to be rotated by rotational power transmitted from the crankshaft, said balancer also being disposed within the cam chain chamber, said balancer being configured to splash oil pooled in the cam chain chamber during rotation thereof, wherein the engine also comprises a wall portion disposed in the cam chain chamber, said wall portion configured to cover an upper portion of the balancer, and is disposed adjacent to a periphery of the balancer, wherein the wall portion includes a cutout therein, said cutout configured to discharge oil between the balancer and the wall portion therethrough.