Fuel oil supply device

The invention provides a fuel oil supply device. The fuel oil supply device is used for selectively supplying oil in a main oil tank and an auxiliary oil tank to an engine. The oil of different typesis stored in the main oil tank and the auxiliary oil tank. Two three-way valves are arranged on the device and are used for controlling oil inlet switching and oil return switching between the main oil tank and the auxiliary oil tank, and no oil mixing phenomenon happens to oil ways; and meanwhile due to the fact that a heating pipe is arranged, engine cooling liquid is utilized for heating the fuel oil in the main oil tank, and the fuel oil use cost can be reduced. 本发明提供了种燃油供给装置，用于将主油箱和副油箱中的油选择性地提供给发动机，其中，主油箱和副油箱中存储有不同型号的油，该装置设置有两个三通阀，分别用于控制主副油箱之间的进油切换和回油切换，使得油路之间不会出现混油现象，同时由于设置有加热管，利用发动机冷却液对主油箱内的燃油进行加热，能够降低燃油使用成本。