Patent ID: 8413639

Claim:
A fuel supplying apparatus comprising: a fuel tank for storing a fuel to be supplied to an internal combustion engine; an automatic cock connected to the fuel tank and having a negative pressure introducing inlet; a negative pressure communication path connecting the negative pressure introducing inlet with a crankcase of the internal combustion engine; and a fuel supply path that is opened by a negative pressure, generated in the crankcase, to supply the fuel from the fuel tank to the internal combustion engine, wherein the negative pressure communication path communicates with a communication opening of an air cleaner through a purge path branched from the negative pressure communication path, the communication opening is disposed in a cleaning chamber formed in the air cleaner so that air filtered by an air filter of the air cleaner flows into the communication opening, and an airflow resistance increasing unit for setting an airflow resistance of the purge path to be larger than an airflow resistance of the negative pressure communication path is disposed only in an inner side of the communication opening.