Evaporation system for motorcycle, and motorcycle incorporating the same

摘要

In a motorcycle including an engine equipped with an inlet system, a crankcase and a cylinder block; and a fuel tank which supplies fuel to the engine, an evaporation system is formed in a compact manner using the layout space above the crankcase. The evaporation system includes a canister which temporarily traps evaporated fuel evaporated inside the fuel tank; a purge device which introduces the evaporated fuel trapped in the canister into the inlet system; and a fresh air filter which filters air introduced to the canister during a purging operation for making the inlet system suction the evaporated fuel. In such evaporation system, the canister is disposed in the rear of the cylinder block and above the crankcase, and the air filter is disposed between the cylinder block and the canister.

主权项

1. In an evaporation system for a motorcycle,
said motorcycle comprising: an engine equipped with a crankcase, a cylinder block, a cylinder head, a cylinder head cover, and inlet system; a fuel tank supplying fuel to said engine; and a cam chain tensioner, said evaporation system comprising: a canister which temporarily traps evaporated fuel evaporated inside said fuel tank; a purge device comprising a purge pipe and a purge control valve, both of which communicate with said canister connected with the inlet system, and making the inlet system suction the evaporated fuel trapped in the canister; a fresh air filter which purifies fresh air introduced into the canister during a purging operation for making the inlet system suction the evaporated fuel; and a fresh air supply pipe which extends from said fresh air filter to said purge device; wherein the evaporation system is characterized in that said canister is disposed at a rear of said cylinder block and above said crankcase, and said fresh air filter is disposed between said cylinder block and said canister, and said fresh air filter is overlapped with the cam chain tensioner when viewed in a side view.