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Turbochargers performance testing with special emphasis on the compressor map

Author(s):
1. Almir Blazevic, University of East Sarajevo, Faculty for Mechanical Engineering East Sarajevo, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
2. Dzevad Bibic, Faculty of Mechanical Engeneering, Sarajevo, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina
3. Ivan Filipović, Faculty of Mechanical Engeneering, Sarajevo, Federation of Bosnia and Herzegovina , Bosnia and Herzegovina


Abstract:
In order to increase energy efficiency of the vehicle powertrain, the innovative solutions in the construction of internal combustion engines, its aggregates, systems and equipment must be obtained. A trend that is prevalent today is widely known as downsizing. Namely, downsizing involves reducing of engine volume (consequently, its mass) and keeping or even increasing the power output compared to a reference IC engines in the same time. This trend of increasing energy efficiency is unthinkable without to use the supercharging systems. The most acceptable aspect supercharges the IC engines, in terms of energy efficiency is the use turbochargers that used exhaust gases which are producing in the combustion process in IC engines. Connecting turbochargers and IC engine is not feasible without knowing the turbochargers performance expressed in form of the compressor and turbine maps. Turbochargers performance testing is done on specialized development laboratories which are equipped with measuring elements necessary to simulate the working conditions prevailing in the real IC engines. Turbochargers testing methodology must be conducted in accordance with the recommendations of standards are defining testing regimes, measurement methodology and data analysis. Problem of creating a compressor map in accordance with standard requirements and guidelines of good engineering practice in this branch will be show in this paper. Special attention will be paid to the comprehension deviation of test results in the case of the use of test regimes that are not adapted to the requirements of standards.

Key words:
downsizing,turbocharger,compressor map

Date of abstract submission:
19.02.2013.

Conference:
DEMI 2013

Applied paper from author

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