Crankcase pressure regulation system for an internal combustion engine

摘要

An improved crankcase pressure regulation system for an internal combustion engine has a floating-disk type vacuum pressure regulator operatively connected to a breather tube for blowby gases upstream of a flow restriction such as an oil separator. The breather tube has an inlet that receives crankcase blowby gases from a breather port in the crankcase and an outlet that feeds blowby gases into an air intake housing where the blowby gases are mixed with filtered engine intake air. The blowby gases are recirculated into the engine for combustion. The floating-disk type vacuum regulator has an air filter to filter ambient air that is added to the blowby gases and later recirculated into the engine air intake for combustion.