Publication detail
The Exhaust Gas Temperature Instability Behind The Electrically Assisted Turbocharger
BÖHM, M. UŠIAK, M. ŠTĚTINA, J. SVÍDA, D.
English title
The Exhaust Gas Temperature Instability Behind The Electrically Assisted Turbocharger
Type
article in a collection out of WoS and Scopus
Language
en
Original abstract
Recent gasoline engines have highly efficient aftertreatment systems. However, this efficiency strongly depends on many factors, mainly the composition of burned mixture and the exhaust gas temperature. This temperature is very instable due to transient and dynamic load of the engine under the real drive conditions. This effect of the unstable temperature is more significant with usage of an electrically assisted turbocharger (EAT), when all exhaust gases go through the turbine and the electromotor placed on the shaft of the turbocharger operates also as motor and generator. In this paper, the effect of the temperature instability with usage of an EAT was investigated on a 1-D turbocharged gasoline engine model, with a focus on the exhaust gas temperature. Based on the results, the usage of an EAT in a gasoline engine has shown significant instability of the temperature which can cause decrease the efficiency of the aftertreatment system and higher material requirements for turbocharger.
English abstract
Recent gasoline engines have highly efficient aftertreatment systems. However, this efficiency strongly depends on many factors, mainly the composition of burned mixture and the exhaust gas temperature. This temperature is very instable due to transient and dynamic load of the engine under the real drive conditions. This effect of the unstable temperature is more significant with usage of an electrically assisted turbocharger (EAT), when all exhaust gases go through the turbine and the electromotor placed on the shaft of the turbocharger operates also as motor and generator. In this paper, the effect of the temperature instability with usage of an EAT was investigated on a 1-D turbocharged gasoline engine model, with a focus on the exhaust gas temperature. Based on the results, the usage of an EAT in a gasoline engine has shown significant instability of the temperature which can cause decrease the efficiency of the aftertreatment system and higher material requirements for turbocharger.
Keywords in English
gasoline engine; electrically assisted turbocharger; exhaust gas temperature; emissions; WLTC
Released
07.09.2022
Publisher
Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering
Location
Bratislava
ISBN
978-80-227-5215-2
Book
Scientific Proceeding KOKA 2022
Edition number
1
Pages from–to
119–126
Pages count
8
BIBTEX
@inproceedings{BUT179094,
author="Michael {Böhm} and Michal {Ušiak} and Josef {Štětina} and David {Svída},
title="The Exhaust Gas Temperature Instability Behind The Electrically Assisted Turbocharger",
booktitle="Scientific Proceeding KOKA 2022",
year="2022",
month="September",
pages="119--126",
publisher="Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering",
address="Bratislava",
isbn="978-80-227-5215-2"
}