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Development and Use of a Computer Simulation of the Turbocompounded Diesel System for Engine Performance and Component Heat Transfer Studies
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Abstract
A computer simulation of the turbocharged turbocompounded direct-injection diesel engine system has been developed in order to study the performance characteristics of the total system as major design parameters and materials are varied. Quasi-steady flow models of the compressor, turbines, manifolds, intercooler, and ducting are coupled with a multi-cylinder reciprocator diesel model where each cylinder undergoes the same thermodynamic cycle. Appropriate thermal loading models relate the heat flow through critical system components to material properties and design details. This paper describes the basic system models and their calibration and validation against available experimental engine test data. The use of the model is illustrated by predicting the performance gains and the component design trade-offs associated with a partially insulated engine achieving a 40 percent reduction in heat loss over a baseline cooled engine.
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Authors
- Dennis N. Assanis - Sloan Automotive Laboratory Massachusetts Institute of Technology Cambridge, MA Dennis K. Assanis is currently at the Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign.
- John B. Heywood - Sloan Automotive Laboratory Massachusetts Institute of Technology Cambridge, MA Dennis K. Assanis is currently at the Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign.
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Citation
Assanis, D. and Heywood, J., "Development and Use of a Computer Simulation of the Turbocompounded Diesel System for Engine Performance and Component Heat Transfer Studies," SAE Technical Paper 860329, 1986, https://doi.org/10.4271/860329.Also In
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