This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Exhaust Gas Condensate Corrosion Test on Low Pressure Cooling System of Aluminum Brazed EGR, ACAC and WCAC
Technical Paper
2012-01-1947
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
New emission regulations require innovation in the engine intake air loop. To satisfy these requirements, new architectures of cooling systems are in the process of development. These systems use valves to regulate the exhaust gas pressure and distribution in the intake cooling loop and ultimately combustion chambers. Since lower pressure is involved in the Exhaust Gas Recirculation (EGR), Water Charge Air Cooler (WCAC) or Air Charge Air Cooler (ACAC), the condensation of exhaust gas takes place and very acidic solutions are generated.
In the absence of such new architecture of cooling system in service and in order to evaluate the corrosion risk that the acidic solutions from exhaust gases condensate could create in the EGR system, several tests have been proposed as representative for simulation of service conditions.
A new bench test was developed to provide an evaluation of the corrosion resistance using the pressure, flow rate, temperature and composition of the condensate corresponding to the identified parameters of service. Descriptions and discussion of the tests protocol and results are included in the presentation.
The aim of this paper is to present the functionality of the test bench, the test results and perspectives to improve the corrosion resistance of the heat exchanger components.
Recommended Content
Authors
Topic
Citation
Garcia, J., "Exhaust Gas Condensate Corrosion Test on Low Pressure Cooling System of Aluminum Brazed EGR, ACAC and WCAC," SAE Technical Paper 2012-01-1947, 2012, https://doi.org/10.4271/2012-01-1947.Also In
References
- NEDC (New European Driving Cycle) or Motor Vehicle Emissions Group (MVEG), Council Directive 70/220/EEC of 20 March 1970 on the approximation of the laws of Member States relating to measures to be taken against air pollution by emissions from motor vehicles
- Kramer, W. “Indirekte Ladeluftkühlung bei Diesel- und Ottomotoren” Motortechnische Zeitschrift 67 02 2006 Vieweg Verlag 2006
- Tietze, T. Lautrich, G. Sommer, A. Jeckel, D. Ferrari, S. Cancalon, P. J. “Frischer Wind für den Pkw-Dieselmotor in Nordamerika: Niederdruck-Abgasrückführung als ein Baustein zur Bewältigung der Abgasemissionsvorschriften” 11. Aufladetechnische Konferenz Dresden Germany 2006
- Münz, T. Römuss, C. Schmidt, P. Brune, K.-H. Schiffer, H.-P. “Dieselmotoren mit Niederdruck-Abgasrückführung - Herausforderungen an den Turbolader” Motortechnische Zeitschrift 69 02 2008 Vieweg Verlag 2008
- Tüber, K. Ambros, P. “Thermodynamischer Vergleich zwischen einer Hochdruck- und einer Niederdruck-Abgasrückführung” Wärmemanagement des Kraffahrzeugs Berlin 2006
- Moroz, S. Bourgoin, G. Luján, J. M. Pla, B. “A 2.0 litre Diesel Engine with Low Pressure Exhaust Gas Recirculation and Advanced Cooling Systems” SIA Diesel, Rouen - INSA Rouen 28 29 May 2008
- VDA 230-214 Verband der Automobilindustrie. Association of the Automotive Industry. Resistance of metallic materials to condensate corrosion in exhaust gas-carrying components - Testing method June 2010
- Garcia Z., J. “The Role of Different Parameters on The Corrosion of Aluminum Heat Exchangers by Exhaust Gases Condensates” 6th International Aluminum Brazing Congress Dusseldorf, Germany May 4 th 6 th 2010