Patent ID: 6029638
Filing Date: 2000-02-29
Classification: F01M,F02B

Abstract:
An internal combustion engine having an intake system, comprising:(a) an engine body including a crankshaft rotatably mounted therein with one end projecting from an end face of said engine body, a head cover at the top of said engine body and defining a valve chamber, and a crankcase at the bottom of said engine body and defining a crank chamber;(b) a dry sump lubricating system for lubricating moving parts in said engine with a lubricating oil, said lubricating system including(i) an oil sump at the bottom of said crank chamber for temporarily holding therein the lubricating oil that has dripped from the moving parts down into said crank chamber,(ii) an oil tank attached to said end face of said engine body for holding therein the lubricating oil,(iii) a feed pump driven by said crankshaft for supplying the lubricating oil from said oil tank to the moving parts of said engine body, and(iv) a recovery pump driven by said crankshaft for sending the lubricating oil from said oil sump back into said oil tank; and(c) a breather system connecting said crank chamber and said oil tank to the intake system of the engine to circulate blowby gas and oil vapors from said crank chamber and said oil tank to the intake system.