Patent ID: 7882819
Filing Date: 2011-02-08
Classification: F01M,F16H

Abstract:
1. An engine comprising: a cylinder block; a crankshaft; a balancer housing mounted below the cylinder block; a balancer drive chain for transmitting a drive force between the crankshaft and a balancer shaft supported on the balancer housing; a hydraulic tensioner for providing tension to the balancer drive chain; an oil pump mounted at one end of the balancer shaft for supplying oil to the hydraulic tensioner; an end housing member mounted to one end of the balancer housing and providing an oil passage extending from a discharge port of the oil pump to the hydraulic tensioner; a reservoir chamber formed in the end housing member so as to be provided in the oil passage for storing the oil supplied to the hydraulic tensioner; a rear chamber provided on a downstream side of the reservoir chamber and communicated with the reservoir chamber through a constriction; an oil jet member which injects the oil to a lubricated portion of the balancer drive chain and which is mounted on the end housing member and communicates with the rear chamber.