Air intake system and manufacturing method of engineering vehicle

The utility model discloses an air intake system and an engineering vehicle. The air intake system includes an oil pre-type filter (10), a rotary ash filter (20), an air filter (30) and a box body (40); the rotary ash filter (20) is configured to filter large particles of dust, and the oil pre-filter (10) is configured to filter small particles of dust; the box body (40) ) Is a sealed structure, the oil pre-filter (10) is arranged inside the box body (40); the box body (40) includes an ash collection chamber (41), and the ash collection chamber ( 41) are respectively connected with the ash rotary filter (20) and the oil pre-filter (10), the air filter (30) and the oil pre-filter (10) Connected. The air intake system of the utility model has lower requirements on the sealing performance of the pipeline, and can prolong the oil replacement period.

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