Patent ID: 8511263

Claim:
A cooling-water pump arrangement structure of an engine, comprising: a cooling-water pump provided at a side portion of a front portion of an engine body having plural cylinder bores arranged in line, the cooling-water pump including a pump pulley which is driven by a crank pulley of the engine via a belt; a pair of flange walls for attaching a front cover, the flange walls projecting toward an engine front side from both sides of a front wall of the engine body; a pump attaching portion for attaching the cooling-water pump, the pump attaching portion being integrally formed at a specified outside portion of the engine body which is located at a corner portion of the engine body beside a boss portion of a cylinder-head fastening bolt so as to project outwardly from the engine body and be continuous from the boss portion, the pump attaching portion having an attachment face which is located on the outside of said flange wall and of a vertically-elongated shape, when viewed from the engine front side, and faces toward the engine front side, a position of the attachment face being retreated toward an engine rear side from said flange wall; and a cooling-water introducing port formed on the attachment face of said pump attaching portion and connecting to a cooling-water jacket enclosing the plural cylinder bores, wherein the cooling-water pump is fastened to the attaching face of said pump attaching portion with a plurality of bolts which are inserted from the engine front side such that bolt holes of the plural bolts are located above and below said cooling-water introducing port in the attaching face of the pump attaching portion.