Patent ID: 8171923
Filing Date: 2012-05-08
Classification: F01M,F16N

Abstract:
1. A cylinder head lubricating structure for an engine, comprising: a crankcase forming a crank chamber storing therein oil and rotatably supporting a crankshaft; a cylinder block; a cylinder head connected to the crankcase with the cylinder block interposed therebetween, the cylinder head having an intake valve and an exhaust valve disposed therein which are capable of opening and closing; an oil dipper housed in the crank chamber which splashes the oil in accordance with rotation of the crankshaft; and a breather passage formed in the crankcase, the cylinder block and the cylinder head, said breather passage guiding gas including oil mist generated in the crank chamber by the oil dipper to the cylinder head, wherein lubricating oil is supplied toward the cylinder head through the breather passage, wherein the crankcase includes a breather chamber which communicates with an end portion, on the crank chamber side, of the breather passage, wherein a one-way valve is attached to the crankcase and is located between the crank chamber and the breather chamber, the one-way valve preventing backflow of the oil toward the crank chamber.