Air filter of diesel locomotive

Abstract

The invention discloses an air filter of a diesel locomotive. A filter element is of a bag structure, filter bags are made of breathable flexible fiberglass materials, a screen covers each filter bag externally, the inner surface of each filter bag is subjected to oil-impregnated treatment, and multiple layers of mutually gapped filter bags are sleeved on a rigid support frame. Filtering area of the air filter is increased greatly, filtering efficiency is extremely high, clogging capacity is high, replacement cycle is long, dust is more effectively prevented from entering a diesel engine to cause frequent cylinder scoring, and the air filter is applicable to regions in severe dust conditions.

Description

technical field [0001] The invention relates to an air filter for an internal combustion locomotive, belonging to the technical field of railway locomotives. Background technique [0002] The air filter is one of the important protection devices for diesel locomotive engines. The wear of the cylinder liner, piston ring and valve of the diesel engine, in addition to the factors affecting the material of the parts themselves and the quality of the manufacturing process, one of the most important external factors is the quality of air purification entering the combustion chamber of the diesel engine. Due to the vast territory of our country, the quality of air purification and its dust content vary greatly. The dust content of air in northwest and sandy areas is generally 290-500 times higher than that in coastal and plain areas. The high dust content in the air brings great harm to the work of related parts and electrical components of the locomotive diesel engine combustion ...

AI Technical Summary

Problems solved by technology

[0003] 1. The filter area is small: if the intake flow rate of the diesel engine supercharger is large, multiple sets of cylindrical filter elements need to be installed, which takes up a lot of space

[0004] 2. Short replacement cycle: For example, in areas with large wind and sand, the replacement cycle needs to be greatly shortened, that is, the aperture of the paper filter element will soon be blocked by sand and dust, resulting in insufficient air intake flow of the diesel engine and normal combustion.

[0005] 3. Low filtration efficiency: The filtration efficiency of the new cylindrical filter is not very high, because the pore size of the filter paper surface is not blocked by dust, so dust smaller than the filter paper pore size can pass through, but as the use time increases, the paper surface After being covered with dust, the pore size of the filter paper surface will decrease, so the filtration efficiency will gradually increase with time, but the air flow rate of the intake air will gradually decrease with the decrease of the pore size. The service life of the filter element, that is, the intake flow of the diesel engine is not enough, and the filter element needs to be replaced

[0006] 4. No diesel engine protection measures: If the operating department fails to replace the filter element in time, it will cause insufficient air intake flow of the diesel engine, incomplete combustion, or even damage the diesel engine

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