Air intake system and manufacturing method of engineering vehicle

1. The utility model relates to the technical field of engineering vehicles, in particular to an air intake system and engineering vehicles.

Background technique:

2. The working environment of construction vehicles is usually harsh. For example, mining excavators often work in environments where the visibility of dust is only a few meters. The engine of a construction vehicle has strict requirements for air intake. If dust enters the engine, the engine cylinder will be damaged, and the engine may even need to be replaced in severe cases.

3. At present, most of the air intake systems of engineering vehicles adopt the following structural layout: the dust-rotating filter is directly installed on the top of the oil pre-filter, and the air intake pipes of the two oil pre-filters are merged into one set. The air box is then connected to the air filter. This structural layout has the following problems: the spatial layout is poor, and because all parts are exposed, dust is easy to scatter on these parts, so there are higher requirements for the tightness of the pipeline. In addition, the rotary dust filter will Some unfiltered dust particles enter the bottom oil sump of the oil pre-filter, resulting in frequent oil changes.

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