Exhaust emissions estimation during transient turbocharged diesel engine operation using a two-zone combustion model

Rakopoulos, C.D.; Dimaratos, Athanasios; Giakoumis, Evangelos G.; Rakopoulos, Dimitrios C.

doi:10.1504/ijvd.2009.024244

Cited by 21 publications

(9 citation statements)

References 29 publications

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“…To predict these emissions from diesel engines, Rakopoulos et al used a comprehensive, 2-zone, transient, diesel combustion model and found that both the NO and the soot emissions were higher in the exhaust values during transient than in steady-state conditions [1]. Pawar and Kulkarni studied a numerical method to predict the NO x emissions by considering the parameter equivalence ratio and the study showed that when the equivalence ratio increases, the NO x increases [2].…”

Section: Introductionmentioning

confidence: 99%

Prediction of emissions and exhaust temperature for direct injection diesel engine with emulsified fuel using ANN

Kökkülünk¹,

Akdoğan²,

Ayhan³

2013

Turk J Elec Eng & Comp Sci

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Exhaust gases have many effects on human beings and the environment. Therefore, they must be kept under control. The International Convention for the Prevention of Pollution from Ships (MARPOL), which is concerned with the prevention of marine pollution, limits the emissions according to the regulations. In Emission Control Area (ECA) regions, which are determined by MARPOL as ECAs, the emission rates should be controlled. Direct injection (DI) diesel engines are commonly used as a propulsion system on ships. The prediction and control of diesel engine emission rates is not an easy task in real time. Therefore, in this study, an artificial neural network (ANN) structure using the back propagation (BP) learning algorithm and radial basis function (RBF) has been developed to predict the emissions and exhaust temperature for DI diesel engines with emulsified fuel. In order to show the ANN performance, the network outputs and experimental results of the BP and RBF have been compared in this paper. The experimental results were obtained from a real diesel engine. The results showed that the emissions and exhaust temperature were estimated with a very high accuracy by means of the designed neural network structures and the RBF is more reliable than the BP.

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Section: Introductionmentioning

confidence: 99%

Prediction of emissions and exhaust temperature for direct injection diesel engine with emulsified fuel using ANN

Kökkülünk¹,

Akdoğan²,

Ayhan³

2013

Turk J Elec Eng & Comp Sci

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“…The principal source of NO is oxidation of atmospheric nitrogen. As the consideration of chemical equilibrium cannot correctly predict NO concentration, a generally accepted kinetics formation scheme described by an extended Zeldovich model [36] is used in this study. The reactions of the extended Zeldovich model are shown in Reactions (15)- 17:…”

Section: No X Formation Kinetic Modelmentioning

confidence: 99%

Investigation of In-Cylinder Steam Injection in a Turbocharged Diesel Engine for Waste Heat Recovery and NOx Emission Control

Zhang

Li-fu

2018

Energies

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In this study, an in-cylinder steam injection method is introduced and applied to a turbocharged diesel engine for waste heat recovery and NO x emission reduction. In the method, cool water was first heated into superheated steam by exhaust. Then the superheated steam was directly injected into the cylinder during the compression stroke. The potential for fuel savings and NO x emission reduction obtained by this method was investigated. First, a two-zone combustion model for the baseline engine was established and calibrated with the experimental data. Based on the model, the effects of steam injection mass, temperature, and timing on engine performance and NO x emission were investigated. The results demonstrate that in-cylinder steam injection can improve engine performance and reduce NO x emissions significantly at all engine speeds. Optimal steam injection mass is obtained under full load at engine speed from 1000 rpm to 1900 rpm when the steam injection timing and temperature are −30 • and 550 K, respectively. Under those conditions, engine torque is increased by 9.5-10.9%, brake-specific fuel consumption (BSFC) is reduced by 8.6-9.9%, and NO x emission is decreased by 83.4-91.8%. Steam injection mass and injection timing are the main parameters that significantly affect engine performance and NO x emission.

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“…However, these engines require very complex after-treatment devices to meet stringent emission targets for NOx and soot, on transient legislative cycles as well as on different transient cycles representing field operations. There are differences in NOx and soot emissions between operation under transient condition with speed or load increase and their corresponding steady state speed-load points [1]. Hence, to meet transient cycle emissions with low cost after-treatment devices as well as to achieve lower emissions in real operations, engines are required to be specifically optimised for transient emissions.…”

Section: Introductionmentioning

confidence: 99%

NOx, Soot, and Fuel Consumption Predictions under Transient Operating Cycle for Common Rail High Power Density Diesel Engines

Walke

Nandgaonkar

Marathe

2016

Journal of Combustion

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Diesel engine is presently facing the challenge of controlling NOx and soot emissions on transient cycles, to meet stricter emission norms and to control emissions during field operations. Development of a simulation tool for NOx and soot emissions prediction on transient operating cycles has become the most important objective, which can significantly reduce the experimentation time and cost required for tuning these emissions. Hence, in this work, a 0D comprehensive predictive model has been formulated with selection and coupling of appropriate combustion and emissions models to engine cycle models. Selected combustion and emissions models are further modified to improve their prediction accuracy in the full operating zone. Responses of the combustion and emissions models have been validated for load and “start of injection” changes. Model predicted transient fuel consumption, air handling system parameters, and NOx and soot emissions are in good agreement with measured data on a turbocharged high power density common rail engine for the “nonroad transient cycle” (NRTC). It can be concluded that 0D models can be used for prediction of transient emissions on modern engines. How the formulated approach can also be extended to transient emissions prediction for other applications and fuels is also discussed.

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Exhaust emissions estimation during transient turbocharged diesel engine operation using a two-zone combustion model

Cited by 21 publications

References 29 publications

Prediction of emissions and exhaust temperature for direct injection diesel engine with emulsified fuel using ANN

Prediction of emissions and exhaust temperature for direct injection diesel engine with emulsified fuel using ANN

Investigation of In-Cylinder Steam Injection in a Turbocharged Diesel Engine for Waste Heat Recovery and NOx Emission Control

NOx, Soot, and Fuel Consumption Predictions under Transient Operating Cycle for Common Rail High Power Density Diesel Engines

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