Skip to main content
Top

2021 | OriginalPaper | Chapter

Charge-Air Cooling of High Performance Engines in an Ejector Refrigeration Cycle

Authors : Tobias Beran, Jan Gärtner, Thomas Koch

Published in: Internationaler Motorenkongress 2021

Publisher: Springer Fachmedien Wiesbaden

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Continuous reductions of the CO2 emission targets in Europe demand further efforts to improve fuel consumption. Downsizing of engines proved to be a powerful concept to help achieving current targets. It has though limitations regarding engine knocking and thermal stress of the components. Low temperature charge air cooling can be a solution to overcome these limitations. This study presents a new concept for a stand-alone charge air cooling system in an ejector refrigeration cycle. A high performance engine was measured for different load cases as benchmark for simulations of the new concept. The measured charge air conditions were used as an input in the simulation model. First simulations varied the ejector nozzle diameter and refrigerant filling mass to determine the optimal design for the maximum thermal load condition. Then, a fixed nozzle diameter and filling mass were chosen to simulate other load cases. In comparison to the benchmark, the charge air temperature for knocking sensitive conditions reduces by 5.6 K. Almost no backpressure builds up by the ejector, allowing energy demands to drive the system of less than 50 W. For high thermal stress regions, the charge air temperature is lower by 11.5 K and the energy demand increases up to 460 W. The higher the heat input, the better is the relative cooling performance of the ejector cooling system. Therefore, the system seems a promising approach to enable further downsizing without adding a high system complexity or cost to the engine.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Metadata
Title
Charge-Air Cooling of High Performance Engines in an Ejector Refrigeration Cycle
Authors
Tobias Beran
Jan Gärtner
Thomas Koch
Copyright Year
2021
DOI
https://doi.org/10.1007/978-3-658-35588-3_19

Premium Partner