Filter and vehicle

Abstract

The invention discloses a filter and a vehicle, and belongs to the technical field of filters. The filter comprises an upper tank body, a lower tank body, a base and a control valve assembly, wherein the base is fixedly arranged between the upper tank body and the lower tank body, an oil inlet pipeline, an oil return pipeline and an oil outlet pipeline are arranged on the base, the oil inlet pipeline is communicated with the oil outlet pipeline, the oil outlet pipeline is communicated with the low-pressure oil pump, and the low-pressure oil pump is communicated with a common rail system; the control valve assembly is arranged on the base and can control the oil inlet pipeline to alternatively communicate with the lower tank body and a main oil tank or communicate with the upper tank body and an auxiliary oil tank; and the control valve assembly can control the oil return pipeline to alternatively communicate with the main oil tank and the common rail system or communicate with the auxiliary oil tank and the common rail system. The vehicle comprises the filter. According to the filter and the vehicle, the structure is compact, the occupied space is small, the maintenance cost is low, the application range is wide, the precision of fuel returning into the oil tank of a corresponding number can be improved, fuel mixing in the oil tank is prevented, and the use reliability is improved.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a filter and a vehicle. Background technique [0002] Due to the viscosity-temperature characteristics of diesel itself, diesel engines cannot be started with high-grade (0#) diesel when the ambient temperature is low, but low-grade (-35#) diesel can be used for low-temperature start. However, low-grade diesel The price is relatively high, so commercial vehicles with diesel engines are generally equipped with main and auxiliary fuel tanks. The main fuel tank is filled with high-grade diesel, and the auxiliary fuel tank is filled with low-grade diesel. When the vehicle starts in winter, use low-grade fuel to supply fuel, and then switch to high-grade fuel tank to supply fuel after the high-grade fuel is heated to a certain temperature, thereby reducing the cost of use. In order to realize fuel switching, the main solution adopted by vehicles on the market is to install a fuel swi...

AI Technical Summary

Problems solved by technology

[0003] At present, since the fuel switching valve is located at the front end of the fuel filter, the fuel passing through the valve body is unfiltered fuel, which often causes failures such as sticking and wear of the fuel switching valve, resulting in the failure of the vehicle to start; in addition, when When fuels of different grades are filtered through the body of a filter tank, it may cause mixed oil in the low-grade fuel tank, which will cause the vehicle to fail to start with low-grade fuel; when multiple filter tanks arranged side by side are used When filtering, the structure is complex, it takes up a lot of space, and the application range is small

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