Patent ID: 6202613
Filing Date: 2001-03-20
Classification: F01M

Abstract:
A four-stroke cycle internal combustion engine comprising:an oil reservoir;a cam chamber;an oil dipper formed on a connecting rod and for agitating oil in said oil reservoir to generate oil mist;a carburetor; andan oil separator being provided between said cam chamber and said carburetor and for separating oil contained in oil mist from blow-by gas;said oil separator having a first passage with an upper end and a lower end and a second passage with a first end and a second end, said first passage communicating with said cam chamber at said upper end and communicating with said oil reservoir at said lower end and said second passage communicating with said lower end of said first passage at said first end and communicating with a venturi of said carburetor at said second end;whereby said engine is adapted to deliver oil mist from said oil reservoir to said cam chamber together with blow-by gas.