PRESSURE WAVE TECHNOLOGY – AN INTERESTING APPROACH IN SUPERCHARGING
Journal Title: ROMANIAN JOURNAL OF TECHNICAL SCIENCES - APPLIED MECHANICS - Year 2018, Vol 63, Issue 1
Abstract
The current concerns of mankind on reducing the disastrous effects of global climate warming have led to measures that involve improving the performance of internal combustion engines (ICE). Supercharging is one of the methods of increasing efficiency and thus optimizing ICE’s energy management. The pressure wave superchargers (PWS) proved to be an economic solution with a simple geometry and fast operating response. The researchers’ efforts to develop the pressure wave devices, encountered a rather slow progress during more than a century since the first pressure exchanger was proposed, mainly caused by the meticulous calculation and simulation of the complex phenomena occurring inside the rotor channels. Currently, progress in computerized programs has facilitated modeling and understanding of these processes. Continuous incentives for achieving energy efficiency together with replacing the older technology with new and innovative one have stimulated lately new interest in wave rotor technology. This paper is reviewing the main features of the PWS, acknowledging the past laborious work of several researchers, which led to the actual performances of the pressure wave technology applications, especially on the vehicle and aircraft propulsion systems. Also, it is presented a system of equations for nonsteady, compressible and viscous flow of fluids working within a PWS.
Authors and Affiliations
IULIANA COSTIUC, ANGHEL CHIRU, LIVIU COSTIUC
Keywords
Related Articles
- EP ID EP508317
- DOI -
- Views 62
- Downloads 0
DYNAMIC STUDY OF AN ELASTIC SYSTEM WITH TWO DEGREES OF FREEDOM
In the paper is presented the dynamic survey of an elastic mechanical system which consists of two rigid solids linked to each other by a cylindrical joint. One of the two rigid solids is linked through an elastic linear...
MULTI-SCALE CRYSTALLINE PLASTICITY FINITE ELEMENT ANALYSIS OF TEXTURE EVOLUTION IN DRAWING PROCESS
The crystallographic control technology in the aluminum wire drawing process is a key technology in the aluminum industries, which produces high-strength bars and wires for the electric, automotive and aircraft parts. A...
EFFECT OF DISTORTION ON THE STRUCTURAL BEHAVIOUR OF THIN-WALLED STEEL REGULAR POLYGONAL TUBES
This paper addresses the effect of cross-section distortion on the structural behaviour of thin-walled tubes with single-cell regular convex polygonal crosssections (RCPS) and provides an in-depth view on the underlying...
THE DISPLACEMENT OF THE EXCAVATOR BUCKET ON THE OPTIMUM TRAJECTORY THROUGH THE CONTROL OF THE HYDRAULIC CYLINDERS LENGTHS
The article refers to the hydraulic excavators with backhoe attachment equipped with length sensors at the hydraulic cylinders. The relations for the calculus of the lengths of the hydraulic cylinders of the excavator co...
EVALUATION OF VIBRATING COMPACTION PROCESS FOR FRESH CONCRETE
This paper is focused on the research performed upon the dynamic model for vibrating compaction of the placed fresh concrete. The influence of the internal viscosity factor changing upon the internal energy dissipated du...