Development of Combustion Solution Meeting CPCB II Emission Norms for Medium Duty Diesel Engines with Mechanical Fuel Injection System

Gandhi, Naresh G.; Gokhale, Nitin; Aghav, Yogesh V.; Kumar, M N

doi:10.4271/2015-26-0030

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…Gandhi et al performed a piston bowl shape optimization using 3-D CFD simulation and the results show that the shape lip re-entrant-type bowl shape reduces 15% of PM and also 5% of NOx. 12 In another group of studies, in-cylinder configuration parameters have been optimized by 1-D CFD simulation. Kumar et al performed optimization of fuel injector nozzle flow rate, nozzle tip protrusion (NTP), and start of injection by 1-D thermodynamic simulation called AVL boost.…”

Section: Introductionmentioning

confidence: 99%

A characteristic study and optimization of in-cylinder configuration for particulate matters reduction in an off-highway diesel engine with mechanical fuel injection system

Lee

Park

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper shows development challenges for 11-liter heavy-duty off-highway diesel engines to meet Tier 3 emission regulations with a base diesel engine compliant with Tier 2 emission regulations. In the case of the installation of an exhaust gas recirculation (EGR) system for reduction of NOx emissions, there exists a risk of increased particulate matters (PM) emissions. An in-cylinder PM reduction is still necessary since a diesel particulate filter (DPF) after-treatment system is not under the consideration. The objective of this research is to see whether the base engine has a potential to meet Tier 3 emission regulations by changing in-cylinder configuration parameters including the bowl shape, injector position, the number of intake and exhaust valves, injector tip protrusion, and injector tip specifications such as nozzle spray angle and nozzle flow rate. These parameters are very important parts which enhance the air and fuel mixing process that helps the combustion process. Thus, the optimization of these design variables is essential to improve combustion efficiency and emissions reduction. In this study, the multi-dimensional computational fluid dynamics (CFD) code KIVA-3V is used to perform combustion simulations. The Kelvin–Helmholtz/Rayleigh–Taylor (KH-RT) model is employed for spray breakup and a reduced chemical mechanism for n-heptane is employed to simulate ignition delay and combustion of diesel fuel. To verify the simulation results, engine bench tests were performed with installations of the final version of in-cylinder geometry in C1-8 mode which is one of main test cycles to meet Tier 3 emission regulations. Finally, Tier 3 emission regulations have been met with the currently optimized in-cylinder configuration parameters.

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Section: Introductionmentioning

confidence: 99%

A characteristic study and optimization of in-cylinder configuration for particulate matters reduction in an off-highway diesel engine with mechanical fuel injection system

Lee

Park

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part D:

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Experimental Investigation of Effect of Various Diesel-Ethanol Blends on In-Use Multi-Cylinder Engine Performance and Emission

Sonawane,

Sekhar,

Warke

et al. 2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">In India, B7 (a biodiesel mix of 7% by volume in diesel) has been approved for use in diesel engines. Due to the depletion of fossil fuel supplies and tight pollution requirements, alternative diesel fuel has become critical. However, given the properties of diesel, no direct renewable alternative fuel can totally replace diesel. As a result, one of the solutions may be to replace part of the diesel with ethanol. In this inquisition, the impact of various diesel-ethanol blends, counting ED7.7, ED10, ED15 and ED20, were examined on two in-use multi-cylinder engines complying to different emission norms. The two engines under consideration complies with CPCB-I and CPCB-II, which is an Indian legal requirement for stationary Genset engines. For both engines, a 5-mode steady-state test cycle was considered. For each mode, the engine’s performance characteristics, including power, torque, and BSFC, were tested and described. The prime goal of adding this research is to delve into the possibility of running diesel gensets with blended fuels in an in-use diesel engine. Also, the emission causing pollutants such as NOx, CO, HC, Smoke and PM were measured for each individual mode. Almost all of the pollutants were seen to have reduced. The drastic reduction level in PM and smoke levels to the tune of almost 30-40% was found promising. ED7.7 and ED10 blends were found to be promising for reducing the overall emissions without changing the existing engine configuration. This research presents a thorough analysis of each mode and the response of two different vintage engines to the use of a diesel ethanol blends. This paper also discusses the methodical process used to select the best blend out of all the tested blends.</div></div>

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Development of Combustion Solution Meeting CPCB II Emission Norms for Medium Duty Diesel Engines with Mechanical Fuel Injection System

Cited by 2 publications

References 3 publications

A characteristic study and optimization of in-cylinder configuration for particulate matters reduction in an off-highway diesel engine with mechanical fuel injection system

A characteristic study and optimization of in-cylinder configuration for particulate matters reduction in an off-highway diesel engine with mechanical fuel injection system

Experimental Investigation of Effect of Various Diesel-Ethanol Blends on In-Use Multi-Cylinder Engine Performance and Emission

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