A Mathematical Model for the Exhaust Gas Temperature Profile of a Diesel Engine

Brito, Cristiano Henrique Gonçalves de; Maia, Cristiana Brasil; Sodré, José Ricardo

doi:10.1088/1742-6596/633/1/012075

J. Phys.: Conf. Ser.

2015

DOI: 10.1088/1742-6596/633/1/012075

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A Mathematical Model for the Exhaust Gas Temperature Profile of a Diesel Engine

Cristiano Henrique Gonçalves de Brito

Cristiana Brasil Maia

José Ricardo Sodré

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Cited by 3 publications

(2 citation statements)

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“…All those above-illustrated aspects determine different fluid dynamic and thermal conditions for the system as its whole, hence directly affect the heat exchange and this is the reason why so many other studies focus on these aspects [45][46][47][48][49]. Things to consider are, for example, the convective exchange coefficients, the emissivity, the thermal diffusivity, and other component properties.…”

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confidence: 99%

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Torque Prediction Model of a CI Engine for Agricultural Purposes Based on Exhaust Gas Temperatures and CFD-FVM Methodologies Validated with Experimental Tests

et al. 2021

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A truly universal system to optimize consumptions, monitor operation and predict maintenance interventions for internal combustion engines must be independent of onboard systems, if present. One of the least invasive methods of detecting engine performance involves the measurement of the exhaust gas temperature (EGT), which can be related to the instant torque through thermodynamic relations. The practical implementation of such a system requires great care since its torque-predictive capabilities are strongly influenced by the position chosen for the temperature-detection point(s) along the exhaust line, specific for each engine, the type of installation for the thermocouples, and the thermal characteristics of the interposed materials. After performing some preliminary tests at the dynamometric brake on a compression-ignition engine for agricultural purposes equipped with three thermocouples at different points in the exhaust duct, a novel procedure was developed to: (1) tune a CFD-FVM-model of the exhaust pipe and determine many unknown thermodynamic parameters concerning the engine (including the real EGT at the exhaust valve outlet in some engine operative conditions), (2) use the CFD-FVM results to considerably increase the predictive capability of an indirect torque-detection strategy based on the EGT. The joint use of the CFD-FVM software, Response Surface Method, and specific optimization algorithms was fundamental to these aims and granted the experimenters a full mastery of systems’ non-linearity and a maximum relative error on the torque estimations of 2.9%.

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confidence: 99%

“…Radiation and convection (natural or forced) coefficients affect the heat exchange inside and outside the exhaust ducts, whereas material conductivity is responsible for heat conduction through the solid components [42,46]; •…”

mentioning

confidence: 99%

Torque Prediction Model of a CI Engine for Agricultural Purposes Based on Exhaust Gas Temperatures and CFD-FVM Methodologies Validated with Experimental Tests

et al. 2021

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Computational and experimental investigation on effective utilization of waste heat from diesel engine exhaust using a fin protracted heat exchanger

Ravi

Pachamuthu

Kasinathan³

2020

Energy

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Recovering waste heat from diesel generator exhaust; an opportunity for combined heat and power generation in remote Canadian mines

Baidya

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Sasmito

et al. 2019

Journal of Cleaner Production

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A Mathematical Model for the Exhaust Gas Temperature Profile of a Diesel Engine

Cited by 3 publications

References 7 publications

Torque Prediction Model of a CI Engine for Agricultural Purposes Based on Exhaust Gas Temperatures and CFD-FVM Methodologies Validated with Experimental Tests

Torque Prediction Model of a CI Engine for Agricultural Purposes Based on Exhaust Gas Temperatures and CFD-FVM Methodologies Validated with Experimental Tests

Computational and experimental investigation on effective utilization of waste heat from diesel engine exhaust using a fin protracted heat exchanger

Recovering waste heat from diesel generator exhaust; an opportunity for combined heat and power generation in remote Canadian mines

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