Patent ID: 7047955
Filing Date: 2006-05-23
Classification: F01M

Abstract:
1. A crankcase emission control device of an internal combustion engine which has a cylinder head secured to an upper surface of a cylinder block that is formed with cylinders and part of a crankcase, the cylinder head having a valve rocker cover chamber defined therein and intake and exhaust ports defined therein, the crankcase emission control device comprising: a gas/liquid separator integrally formed by the cylinder head at a position below the intake ports, the gas/liquid separator separating an oil mist from blow-by gases flowing therethrough; a first passage defined in both the cylinder block and the cylinder head to connect an interior of the crankcase to the valve rocker cover chamber; a second passage that extends from the valve rocker cover chamber to the gas/liquid separator; and a third passage that extends from the gas/liquid separator to an intake system of the engine.