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Modeling of Engine Coolant Temperature in Diesel Engines for the Series Hybrid Powertrain System
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 Title & Authors
Modeling of Engine Coolant Temperature in Diesel Engines for the Series Hybrid Powertrain System
Kim, Yongrae; Lee, Yonggyu; Jeong, Soonkyu;
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Modeling of engine coolant temperature was conducted for a series hybrid powertrain system. The purpose of this modeling was a simplification of complex heat transfer process inside a engine cooling system in order to apply it to the vehicle powertrain simulation software. A basic modeling concept is based on the energy conservation equation within engine coolant circuit and are composed of heat rejection from engine to coolant, convection heat transfer from an engine surface and a radiator to ambient air. At the final stage, the coolant temperature was summarized as a simple differential equation. Unknown heat transfer coefficients and heat rejection term were defined by theoretical and experimental methods. The calculation result from this modeling showed a reasonable prediction by comparison with the experimental data.
Modeling;Engine;Coolant temperature;Series hybrid;
 Cited by
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