Patent ID: 7124732
Filing Date: 2006-10-24
Classification: F01M

Abstract:
1. A lubricating apparatus for an internal combustion engine comprising a feed pump configured to feed lubricating oil from an oil tank to portions of the engine to be lubricated, and at least first and second scavenging pumps configured to return the lubricating oil accumulated in an oil reservoir of the engine to the oil tank, the oil reservoir being separated into at least first and second partitioned reservoirs, the first and second scavenging pumps configured to draw oil from the first and second partitioned reservoirs, respectively, the feed pump and the first and second scavenging pumps being formed by a plurality of rotors arranged on one pump shaft and being parallel with each other and forming an oil pump unit, wherein the oil tank and the oil pump unit are arranged on an outside of the internal combustion engine, and wherein the pump shaft is arranged in a same direction as that of a crank shaft of the engine.