Composite air inlet anti-reflux air filter element for filtering high-temperature and high-pressure gas of engine

The invention belongs to the technical field of engine air inlet filtering, and particularly relates to a composite air inlet anti-reflux air filter element for filtering high-temperature and high-pressure air of an engine, which is applied to filtering the high-temperature and high-pressure air and has the characteristics of composite air inlet and reflux prevention. The filter element comprises at least one layer of reinforced support type stainless steel wire mesh concentric with the axis of the filter element, an air inlet pleated filter material is arranged on the reinforced support type stainless steel wire mesh, and the air inlet pleated filter material is a glass fiber or metal felt filter material which is folded in the circumferential direction and then connected end to end; the air filter element solves the problem that a two-stage dispersedly-arranged air fine filter working in a high-temperature and high-pressure environment cannot meet the air inlet purification requirement of a vehicle engine u