Operational properties of performance engine intake air cleaners

Tadeusz Dziubak

doi:10.19206/ce-2018-103

Abstract

The paper presents an analysis of the design of air cleaners in performance vehicles. The paper confirms that their fundamental property is a much lower flow resistance compared to standard air cleaners. The consequences of replacing a standard air filter element with a performance one have been described. The impact of this modification i.e. an increase (decrease) in the engine torque and power output has been shown. A need to perform tests related to the filtration properties of performance air cleaners has been indicated. A methodology of laboratory research has been developed for performance vehicle air cleaners. The results of the research on the filtration efficiency and accuracy characteristics have been presented along with the flow resistance of air filter elements/air cleaners depending on the dust absorbance coefficient km. The accuracy of the filter element has been evaluated following a Pamas particle counter measurement.

Highlights

One of the factors influencing the engine repair intervals of modern combustion engines is the purity of the intake air
This job is performed by air filter elements with a paper filtering partition characterized by high density of packing and the dust absorbance limited by the admissible resistance Δpfdop
The test dust was dispensed to the dust chamber where it mixed with the intake air subsequently sucked in by the investigated air cleaner

Summary

Introduction

One of the factors influencing the engine repair intervals of modern combustion engines is the purity of the intake air. The most extensive engine wear is caused by grains of the size of 5–35 μm [1, 5, 6, 8, 26], which is why grains of the size exceeding 5 μm should be trapped by the air cleaners with a maximum (over 99.9%) efficiency [1, 3,4,5, 7, 17] This job is performed by air filter elements with a paper filtering partition characterized by high density of packing and the dust absorbance limited by the admissible resistance Δpfdop. Such nanofibers are obtained through electrospinning or meltblown [2, 13, 16, 19, 27]

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Conclusion