A diesel engine turbocharger air filter

Abstract

The invention discloses an air filter for a turbocharger of a diesel engine, which comprises an air filter body and an air filter cover plate; the inner diameter of the air filter body is an air flow channel; The connecting part of the volute connected to the air port, the inner diameter of the connecting part of the volute is larger than the inner diameter of the air filter body to form an air filter cover housing chamber, the air filter cover housing is fixed in the air filter cover housing, and the air filter cover housing chamber is far away from An air inlet ring cavity is formed between the end face of one end of the volute and the air filter cover, and a compressor air intake recirculation channel is formed between the air filter cover and the compressor casing of the volute, and there is also a The air intake connecting port communicated with the crankcase of the diesel engine and the pressurized gas intake channel communicating with the air intake connecting port and the intake ring cavity. The air filter can realize the pressure gas in the crankcase of the diesel engine into the compressor of the supercharger to participate in the compression work again, prevent the pressure in the crankcase of the diesel engine from being too high, ensure the normal operation of the diesel engine, and improve the efficiency of the supercharger.

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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