MATEC Web Conf.
Volume 234, 2018BulTrans-2018 – 10th International Scientific Conference on Aeronautics, Automotive and Railway Engineering and Technologies
|Number of page(s)
|Internal Combustion Engines
|21 November 2018
Automotive compressor: effect of an electric throttle in the upstream circuit on the surge limit
1 Laboratoire de Chimie Moléculaire, Génie des procédés Chimiques et Energétique, EA7341, Conservatoire National des Arts et Métiers, HESAM Université, 75003 Paris, France
2 Laboratoire DynFluid, EA 92, Arts et Métiers ParisTech, 75013 Paris, France
3 Université technique de Sofia, 8 rue Kliment Ohridski, 1000, Sofia, Bulgarie
4 Department Automobiles and Transport, University of Pitesti, 110040 Pitesti, Romania
5 Valeo, 95892 Cergy Pontoise, France
* Corresponding author: firstname.lastname@example.org
On vehicles equipped with a turbocharged engine, there is a risk of compressor surge. This surge generates instabilities that lead to driving inconvenience, or even mechanical failure of the supercharging system. In general, the surge appears rather in transient operation: sudden closing of the throttle valve on gasoline engine, regulation of the EGR on diesel engine linked also to turbine regulation (VNT device or Waste Gate). On a turbocharger test stand, we set up the surge line in a “conventional way”: stationary experiments. Then we set up this line in transient conditions for different positions of an electric throttle placed upstream the compressor. It appears that: the surge limit is pushing back to lower flow rates when it is determined in transient; the surge limit is pushing back to lower flow rates when closing the throttle valve. The tests were carried on by the transient analysis of the surge during a quick closing-opening of the electric throttle valve.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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