Devising a model of the airflow with dust particles in the intake system of a vehicle’s internal combustion engine

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.230113

Keywords:

internal combustion engine, intake manifold, two-phase flow, dust particles, centrifugation

Abstract

This paper considers the mechanism of malfunction of internal combustion engines that implies the accelerated local wear of parts in individual cylinders as a result of uneven distribution of dust particles that pass through the air filter in the intake system.

In order to acquire quantitative data on the effect of the structure of the intake system on the redistribution of dust in engine cylinders, the two-phase flow of air with dust particles in the standard elements of the intake system was mathematically modeled.

ANSYS software package was used to solve the problem. A simulation technique was devised in which the airflow was first calculated to determine the boundary conditions for dust, after which the flow of air with particles was calculated. The calculations were carried out in a range of air velocities of 5‒20 m/s in branching channels with diversion angles of 45°, 90°, and 135° for the most characteristic particle sizes of 5‒30 µm. It has been estimated that dust particles deviate from the air streamlines by inertia and can slip through the lateral drain the stronger the larger particle size, diversion angle, and velocity of air.

The comparison of the simulation results with experimental data confirmed that in the intake system of some engines, due to uneven particle distribution, there is local abrasive wear in one or more cylinders, which can significantly reduce the resource. This paper shows the need to take into consideration the centrifugation and redistribution of dust in the intake systems during the design, modernization, expert studies to determine the causes of faults associated with faulty operating conditions, as well as to clarify the regulations for the maintenance of existing engines.

Author Biographies

Olexii Saraiev, Kharkiv National Automobile and Highway University

Doctor of Technical Sciences, Professor

Department of Automobiles

Alexander Khrulev, Kharkiv National Automobile and Highway University

PhD, Senior Researcher

Department of Automobiles

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Published

2021-04-20

How to Cite

Saraiev, O., & Khrulev, A. (2021). Devising a model of the airflow with dust particles in the intake system of a vehicle’s internal combustion engine. Eastern-European Journal of Enterprise Technologies, 2(1 (110), 61–69. https://doi.org/10.15587/1729-4061.2021.230113

Issue

Vol. 2 No. 1 (110) (2021): Engineering technological systems

Section

Engineering technological systems

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