Patent ID: 8393306
Filing Date: 2013-03-12
Classification: F01M

Abstract:
1. An internal combustion engine comprising: a crankcase; a crankshaft disposed in the crankcase, the crankshaft defining a crankshaft axis; a cylinder block disposed on the crankcase, the cylinder block having at least one cylinder, the at least one cylinder defining a cylinder axis; at least one piston disposed in the at least one cylinder, the at least one piston being operatively connected to the crankshaft; a cylinder head assembly connected to the cylinder block; a plurality of oil passages disposed in at least one of the crankcase, the cylinder block, and the cylinder head assembly; an oil tank fluidly connected to at least one of the oil passages, the oil tank having a first side and a second side opposite the first side; an oil outlet disposed in the oil tank, the oil outlet fluidly communicating the oil tank with at least one of the oil passages for supplying oil from the oil tank to the oil passages; and an oil inlet disposed in the first side of the oil tank, the oil inlet fluidly communicating with at least one of the plurality of oil passages for returning a mixture of oil and blow-by gases from the at least one of the plurality of oil passages to the oil tank, an angled portion of the second side of the oil tank generally facing the oil inlet being angled relative to a plane defined by the crankshaft axis and the cylinder axis such that the mixture of oil and blow-by gases exiting the oil inlet flow over the angled portion, the angled portion being angled relative to the oil inlet, the angled portion being spaced from a bottom of the oil tank, and the angled portion extending away from the plane as the angled portion extends upwardly, an angle between the angled portion of the second side of the oil tank and the plane is between 45 degrees and 80 degrees.