Air cleaner structure

摘要

An air cleaner structure for a vehicle includes an air cleaner is mounted on a power unit. The air cleaner case is formed in a shape elongated from a side of the internal combustion engine toward a side of the rear wheel. An intake-air outlet passage connected to an upstream end of a connecting tube is formed forward in the front of the air cleaner case. A filter member is placed rearward of the intake-air outlet passage in the case. A blowby gas return passage connected to a blowby gas return pipe of the engine, and an additional air passage are juxtaposed with each other in a vertical direction and formed forward around the intake-air outlet passage in front of the air cleaner case such that the blowby gas return passage is located below the additional air passage. The resulting structure reduces a length of piping to the engine.

主权项

1. An air cleaner structure of an air cleaner for a scooter type vehicle is mounted above a power unit which has an integrated internal combustion engine and a power transmission device connected to a rear wheel, comprising:
an air cleaner case of the air cleaner formed in a shape elongated from a side of the internal combustion engine toward a side of the rear wheel in a fore-and-aft direction when viewed from a side; an intake-air outlet passage, to which an upstream end of a connecting tube leading to the internal combustion engine is connected, formed forward in a front of the air cleaner case; a filter member of a cleaner element placed at a rear of the intake-air outlet passage in the air cleaner case; and a blowby gas return passage connected to a blowby gas return pipe of the internal combustion engine, wherein the blowby gas return passage and an additional air passage, which communicate with an interior of the air cleaner case, are juxtaposed with each other in a vertical direction and are formed forward around the intake-air outlet passage in the front of the air cleaner case such that the blowby gas return passage is located below the additional air passage.