The invention relates to a
fuel oil evaporation system and a motorcycle thereof, comprising a carbon
jar and a pipeline
system, wherein the carbon
jar is fixedly arranged on the lower surface of the bottom plate of a
fuel oil tank; the pipeline
system comprises a
breather pipe I and a
breather pipe II; one end of the
breather pipe I is communicated to the
gas phase of the gas and oil separator ofthe
fuel oil tank, and the other end is communicated to the fuel oil steam adsorption mouth of the carbon
jar; the pipeline of the breather pipe I is provided with a dumping valve; the dumping valve is fixed on the lower surface of the bottom plate of the fuel
oil tank; one end of the breather pipe II is communicated to the
desorption mouth of the carbon jar; and the other end is communicated to the
mixed gas inlet of a carburettor. The fuel oil
evaporation system is integrally connected with the fuel
oil tank. When the fuel oil
evaporation system is assembled, the fuel
oil tank can be firstly installed, and then, a pipeline between the carbon jar and the carburettor is connected, thereby saving labor force. Meanwhile, abnormal bending when a
breathing line is installed can be avoided to guarantee that the
breathing line is smooth so as to ensure that the fuel oil evaporation system can normally operate for a long period. The structural pipeline system has simple structure,
workload for installation is reduced, the surface of the fuel oil tank and the periphery can be guaranteed to be beautiful and compact, and use and maintenance cost is lowered.