Models of the gas exchange process in modern diesel engines typically use manufacturer-provided maps to describe mass flows through, and efficiencies of, the turbine and compressor based on pressure ratios across the turbine and compressor, as well as the turbocharger shaft speed, and in the case of variable-geometry turbochargers, the nozzle position. These look-up maps require multiple interpolations to produce the necessary information for turbocharger performance, and are undesirable when modeling for estimation and control. There have been several previous efforts to reduce dependence on maps with general success, yet many of these approaches remain complex and are not easily integrated into engine control systems. The focus of this paper is the reduction of turbomachinery maps to analytical functions that are amenable to estimator and control design, and have been validated against manufacturer-provided turbomachinery data.
Turbocharger Map Reduction for Control-Oriented Modeling
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received March 30, 2011; final manuscript received May 18, 2012; published online April 4, 2014. Assoc. Editor: Marco P. Schoen.
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Stricker, K., Kocher, L., Koeberlein, E., Van Alstine, D. G., and Shaver, G. M. (April 4, 2014). "Turbocharger Map Reduction for Control-Oriented Modeling." ASME. J. Dyn. Sys., Meas., Control. July 2014; 136(4): 041008. https://doi.org/10.1115/1.4026532
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