Coordinated EGR-VGT Control for Diesel Engines: an Experimental Comparison

Paper #:
  • 2000-01-0266

Published:
  • 2000-03-06
Citation:
van Nieuwstadt, M., Kolmanovsky, I., and Moraal, P., "Coordinated EGR-VGT Control for Diesel Engines: an Experimental Comparison," SAE Technical Paper 2000-01-0266, 2000, https://doi.org/10.4271/2000-01-0266.
Pages:
14
Abstract:
This paper describes and experimentally compares various strategies to control the gas flows of a high speed automotive diesel engine equipped with external exhaust gas recirculation (EGR) valve and variable geometry turbocharger (VGT). The strategies differ in their choice of controlled variables and design approaches. Some of the strategies rely on standard measurements such as intake manifold pressure and compressor mass air flow. Others measure or estimate less readily available quantities such as exhaust manifold pressure and EGR flow fraction. The focus of this paper is on the experimental details of controller implementation. The control schemes are evaluated on their emissions and fuel economy over the extra urban part of the new European drive cycle. The implementation effort and chronometric load are also compared.
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