CHAIN COVER DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PURPOSE:To miniaturize a device and reduce the number of components by forming an expanded section at the lower section of a chain cover and arranging the insertion hole of a crank shaft end section and an oil pump driven by a crank shaft. CONSTITUTION:The first chain 7 is wound between the first sprocket 5 fitted at the end section of a crank shaft 4 and the large-diameter gear 6A of an idle gear 6 fitted on a bank at the upper section of a cylinder block 1. A chain cover 15 covering the first chain 7 or the like is fitted on the side wall of the cylinder block 1. An expanded section 19 is formed on the outside of the first sprocket 5 at the lower section of the chain cover 15. A hole 19A for inserting a crank shaft and an oil pump 21 driven by the crank shaft 4 are arranged on the expanded section 19. A flange section 22 connected to the flange section 24A of an oil pan 24 is formed on the lower wall section of the expanded section 19.