Patent ID: 7021267

Claim:
A multi-cylinder internal combustion engine, comprising an engine block having a plurality of oil galleries formed therein, an oil filter and an oil cooler operatively attached to the engine block, and a balancer rotatably disposed within said engine block; wherein said oil filter is attached to a side surface of said engine block; wherein said oil cooler and said balancer are each respectively attached to a front central portion of said multi-cylinder internal combustion engine; said engine further comprising an oil pan having an oil reservoir portion formed therein for temporarily storing engine oil, and an oil pump for drawing oil from the oil reservoir portion of the oil pan and for supplying the oil to individual portions of the internal combustion engine after passing the oil through the oil filter and the oil cooler; wherein said engine block is configured with a main oil gallery and an oil supply passage formed therein, said oil supply passage extending from an area proximate the oil cooler to a medial portion of the main oil gallery, so that oil from said oil cooler is introduced via the oil supply passage to a substantially central part of the main oil gallery formed in said engine block.