Patent ID: 9512754
Filing Date: 2016-12-06
CPC Classification: F01M

Claim Text:
1. A blowby gas processing device of an internal combustion engine, the blowby gas processing device comprising: a cylinder block including an inter-block passage constituting a part of a blowby gas passage, the blowby gas passage allowing blowby gas in a crank case of the internal combustion engine to pass through via the inter-block passage, and the blowby gas passage being configured to introduce the blowby gas into an intake passage of the internal combustion engine; a cylinder head; a cylinder head cover including an in-head passage constituting a part of the blowby gas passage, the in-head passage being provided in at least one of the cylinder head or the cylinder head cover; an oil separator provided in the inter-block passage, the oil separator being configured to separate and remove oil from the blowby gas; and a flow velocity amplification device configured to increase flow velocity of the blowby gas flowing in a bottommost portion, the bottommost portion being provided in the vicinity of the lowest position in a posture in which the internal combustion engine is mounted of the in-head passage, wherein: the internal combustion engine includes a supercharger, a circulation passage and an ejector, the circulation passage is configured to circulate intake air from the intake passage on the downstream side with respect to the supercharger to the intake passage on the upstream side with respect to the supercharger, and the ejector is provided in the circulation passage, and the in-head passage includes a connecting passage configured to connect the bottommost portion with the ejector.