Effects of Injection Timing and EGR on DI Diesel Engine Performance and Emission-using CFD

Gunabalan, A.; Tamilporai, P.; Ramaprabhu, R.

doi:10.3923/jas.2010.2823.2830

Cited by 11 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…With further delay of α post up to 40°CA, soot oxidation deteriorates due to the lower ICT at the time of post injection and soot emission starts to increase. As a result of advancing the SoI from 0 °CA to −30 °CA, maximum ICT increases (Figure 12), and the soot emission decreases due to enhanced soot oxidation [46]. As indicated in Figure 13b, the reduced O 2 concentration due to increased α 2IVO causes higher soot emission because of the fuel rich zones [4,47].…”

Section: Emission and Performance Analysismentioning

confidence: 99%

Numerical Investigation and Multi-Objective Optimization of Internal EGR and Post-Injection Strategies on the Combustion, Emission and Performance of a Single Cylinder, Heavy-Duty Diesel Engine

Akgül

Özener

Büyük³

et al. 2020

Energies

View full text Add to dashboard Cite

This work presents a numerical study that investigates the optimum post-injection strategy and internal exhaust gas recirculation (iEGR) application with intake valve re-opening (2IVO) aiming to optimize the brake specific nitric oxide (bsNO) and brake specific soot (bsSoot) trade-off with reasonable brake specific fuel consumption (BSFC) via 1D engine cycle simulation. For model validation, single and post-injection test results obtained from a heavy-duty single cylinder diesel research engine were used. Then, the model was modified for 2IVO application. Following the simulations performed based on Latin hypercube DoE; BSFC, bsNO and bsSoot response surfaces trained by feedforward neural network were generated as a function of the injection (start of main injection, post-injection quantity, post-injection dwell time) and iEGR (2IVO dwell) parameters. After examining the effect of each parameter on pollutant emission and engine performance, multi-objective pareto optimization was performed to obtain pareto optimum solutions in the BSFC-bsNO-bsSoot space for 8.47 bar brake mean effective pressure (BMEP) load and 1500 rpm speed condition. The results show that iEGR and post-injection can significantly reduce NO and soot emissions, respectively. The soot oxidation capability of post-injection comes out only if it is not too close to the main injection and its efficiency and effective timing are substantially affected by iEGR rate and main injection timing. It could also be inferred that by the combination of iEGR and post-injection, NO and soot could be reduced simultaneously with a reasonable increase in BSFC if start of main injection is phased properly.

show abstract

Section: Emission and Performance Analysismentioning

confidence: 99%

Numerical Investigation and Multi-Objective Optimization of Internal EGR and Post-Injection Strategies on the Combustion, Emission and Performance of a Single Cylinder, Heavy-Duty Diesel Engine

Akgül

Özener

Büyük³

et al. 2020

Energies

View full text Add to dashboard Cite

show abstract

“…Using the STAR-CD program, Gunabalan et al [9] subjected the operation of a single-cylinder direct-injection compression ignition engine to numerical analysis. The examination included, among other things, the effect of the injection advance angle on the maximum pressure and temperature magnitudes and the emission of NO x and soot.…”

Section: Introductionmentioning

confidence: 99%

“…Są to programy należące do działu mechaniki płynów, wykorzystującego metody numeryczne do rozwiązywania zagadnień przepływu płynów -CFD (Computational Fluids Dynamics). Gunabalan i inni [9], wykorzystując program STAR-CD, poddali analizie numerycznej pracę jednocylindrowego silnika o zapłonie samoczynnym z wtryskiem bezpośrednim. Zbadano m.in.…”

Section: Introductionunclassified

The accuracy of modelling of the thermal cycle of a compresion ignition engine

Cupiał¹,

Tutak²,

Jamrozik³

et al. 2011

Combustion Engines

View full text Add to dashboard Cite

The results of numerical analysis the combustion process in turbocharged CI engine 6CT107 are presented in the paper. Engine was installed on the ANDORIA’s power generator of 100 kVA/80 kW. The results of modelling the combustion process for different angle setting fuel injection, compared with the results obtained by indicating the real engine. Numerical analysis was performed in two programs, designed for three-dimensional modelling of the thermal cycle the piston internal combustion engine, namely AVL FIRE and the KIVA-3V.

show abstract

“…It is broadly used by engine researchers to explore in-cylinder flow fields, heat transfer, combustion characteristics, and emission formation processes (Ismail et al 2011;Gunabalan et al 2010). The modeling of an internal combustion engine represents one of the most challenging fluid mechanics problems due to the compressible nature of the flow with large density variations, low Mach number, and turbulent, unsteady, cyclic, nonstationary, and nonuniform flow (Ismail et al 2011).…”

Section: Mathematical Modeling and Simulationmentioning

confidence: 99%

“…On the other hand, mixing-controlled combustion depends on the rate of turbulent mixing of fuel and air to form combustible mixture. A non-premixed model with the probability density function approach is used to model diesel combustion process for turbulent diffusion flames with fast chemistry (Ismail et al 2011;Gunabalan et al 2010).…”

Section: Mathematical Modeling and Simulationmentioning

confidence: 99%