Patent ID: 8079350
Filing Date: 2011-12-20
Classification: F01M,F02F,F02M,Y02T

Abstract:
1. A blow-by gas recirculation structure comprising: a cylinder head including an intake manifold mounting surface and a cylinder block mounting surface with a first intake passage extending between a first intake opening formed in the intake manifold mounting surface and a first intake port formed in the cylinder block mounting surface, and a second intake passage extending between a second intake opening formed in the intake manifold mounting surface and a second intake port formed in the cylinder block mounting surface, the cylinder head further including at least one blow-by gas passage for recirculating blow-by gas to the first intake passage, the intake manifold mounting surface further having at least one enlarged recess fluidly connected between the blow-by gas passage and the first intake passage, the enlarged recess being disposed between the first and second intake openings and at least partially aligned with centers of the first and second intake openings, and the enlarged recess having a depth of at least forty percent of a length of the first and second intake passages as measured from the intake manifold mounting surface to the cylinder block mounting surface.