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EGR - A Challenge for Modern Plastic Intake Manifolds
Technical Paper
2002-01-0902
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Nowadays, market shares for plastic intake manifolds are still increasing, although the competition with aluminum and magnesium is tough [1], [2].
It is becoming more and more apparent, that for a further spread one of the key issues is the managing of high temperatures generated by EGR inlets. Successful design of such devices will depend heavily on the correct prediction of the temperature loads.
3-D CFD calculations (e.g. with STAR CD or Fluent) turn out to be a valuable tool for this purpose. However, providing realistic boundary conditions remains difficult unless measured engine data for EGR mass flows and temperature is available.
The alternative to experimental data is the calculation of boundary conditions with the help of a 1D charge cycle program, e.g. GT Power, which serve then as time dependent, tabulated input for the CFD codes.
However only the full coupling of the 3D computational domain representing the manifold with the 1-D charge cycle program assures that a real two way dependence of engine and manifold is achieved thus leading to more exact results. The present paper will describe this procedure in more detail. Time dependent exhaust gas distributions will be analyzed and the wall temperatures for cylinder individual EGR determined. Conclusions will be drawn regarding required materials and design modifications for reduced temperature load.
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Wehr, D., Huurdeman, B., and Spennemann, A., "EGR - A Challenge for Modern Plastic Intake Manifolds," SAE Technical Paper 2002-01-0902, 2002, https://doi.org/10.4271/2002-01-0902.Also In
References
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- Weber, O. Paffrath, H. Cedzich, W. Beutnagel, J. Thermodynamic and Acoustic Development of Air Intake Systems for Combustion Engines Considering Manufacturing Aspects 19 th International Vienna Motor Symposium Vienna May 1999
- 3. Kleinehakenkamp, N. Mangold, C. Air Intake Manifold for the Rover KV6-Engine MTZ 60 1999 5 “Sytem Partners 99”
- Weber, O. Wild, S. Power and Torque - Optimized Intake Manifold Continuously Variable Resonance Runners 22 nd International Vienna Motor Symposium Vienna April 2001