Patent ID: 8584646
Filing Date: 2013-11-19
Classification: F01L,F01M,F02F,Y10T

Abstract:
1. A chain case structure for an engine, in which a chain case is disposed at an end of an engine body of an engine such that a left edge and a right edge of the chain case are joined to an end of the engine body below a head cover of an engine and an upper edge of the chain case is joined to a lower portion of the head cover, and in which a mount bracket unit adopted to support the engine body and a cylinder unit, into which a hydraulic control valve of a variable valve actuation mechanism is inserted into a cylinder unit, are disposed so as to bulge out from an outer wall of the chain case, wherein both side portions of the mounting bracket unit in a width direction thereof are disposed so as to extend to one of the left edge and the right edge of the chain case and to the upper edge thereof, respectively, when the chain case is viewed in a direction of a crank shaft of the engine, a fastener adapted to fasten to the engine body is mounted to a lower portion of the mounting bracket unit, the cylinder unit is arranged under the fastener with an outer circumferential surface of the cylinder unit being coupled to the mounting bracket unit, and a reinforcement rib is disposed under the mounting bracket unit so as to extend downward from the mounting bracket unit by traversing the cylinder unit.