Air filter for diesel engine turbocharger

Abstract

The invention discloses an air filter of a diesel engine turbocharger. The air filter comprises an air filter body and an air filter cover plate, wherein the inner path of the air filter body is an air flow channel; a volute connecting part connected with an air inlet of a volute is arranged at one end of an air outlet of the air filter body, and the inner path of the volute connecting part is larger than that of the air filter body to form an air filter cover plate containing chamber; the air filter cover plate is fixed in the air filter cover plate containing chamber, and an air inlet ring chamber is formed between the end face of the end, away from the volute, of the air filter cover plate containing chamber; an air compressor air inlet recirculation channel is formed between the air filter cover plate and an air compressor casing of the volute; and an air inlet connecting port communicating with adiesel engine crankcase and a pressure air inlet channel communicating with the air inlet connecting port and the air inlet ring chamber are formed in the volute connecting part. According to the air filter, pressure air in the diesel engine crankcase can be guided into a turbochargerair compressor to participate in compression work again, the pressure in the diesel engine crankcase is prevented from being too high, normal work of a diesel engine is guaranteed, and the efficiencyof the turbocharger is improved.

Description

technical field [0001] The invention relates to the technical field of turbochargers for diesel engines, in particular to an air filter for turbochargers for diesel engines. Background technique [0002] With the continuous expansion of the application of high-power diesel engine products in railway locomotives, marine ships and other fields, the performance requirements of diesel engines have gradually increased: higher power, lower fuel consumption, lighter weight, and more compact structure. At the same time, the reliability of diesel engines Sexual demands also become more important. As one of the most important core components of a diesel engine, the turbocharger not only undertakes the basic function of compressing air and reusing exhaust gas to do work, but also plays an active role in assisting the diesel engine to improve specific reliability functions. [0003] The closed cycle function of the diesel engine means that a centrifugal pump is installed in the crankca...

AI Technical Summary

Problems solved by technology

[0004] The invention proposes an air filter for a turbocharger of a diesel engine, which solves the problem that a small amount of high-temperature exhaust gas at the turbine end of a part of the turbocharger will be sucked into the diesel engine during the process of the centrifugal pump circulating lubricating oil in the turbocharger and the crankcase of the diesel engine Inside the crankcase, increasing the internal pressure of the diesel engine crankcase makes the diesel engine unable to work normally

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