Efficient Approach for Optimization of Piston Bowl Shape, Compression Ratio and EGR for DI Diesel Engine

Sheikh, Shabbir; Gokhale, Nitin; Thatte, V. M.; Gandhi, Naresh G.; Deshmukh, B. S.; Aghav, Yogesh V.; Kumar, M N; Nandgaonkar, Milankumar; Babu, M. K. Gajendra

doi:10.4271/2011-24-0013

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…Finally, it was shown that short injection times at high pressure tend to be required for low-soot emissions at high loads. Sheikh et al [25] described that a reduction in BSFC with a reduced CR is possible by means of suitable pistonshape adaptation. The piston shape with the lowest CR also has the lowest combustion temperatures and, consequently, lower NOx emissions (similar findings regarding NOx may be found in [22]).…”

Section: Introductionmentioning

confidence: 99%

Computational Investigation on the Performance Increase of a Small Industrial Diesel Engine Regarding the Effects of Compression Ratio, Piston Bowl Shape and Injection Strategy

et al. 2022

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This paper describes the simulative approach to calibrate an already extremely highly turbocharged industrial diesel engine for higher low-speed torque. The engine, which is already operating at its cylinder-pressure maximum, is to achieve close to 30 bar effective mean pressure through suitable calibration between the compression ratio, piston-bowl shape and injection strategy. The basic idea of the study is to lower the compression ratio for even higher injection masses and boost pressures, with the resulting disadvantages in the area of emissions and fuel consumption being partially compensated for by optimizations in the areas of piston shape and injection strategy. The simulations primarily involve the use of the 3D CFD software Converge CFD for in-cylinder calibration and a fully predictive 1D full-engine model in GT Suite. The simulations are based on a two-stage turbocharged 1950 cc four-cylinder industrial diesel engine, which is used for validation of the initial simulation. With the maximum increase in fuel mass and boost pressure, the effective mean pressure could be increased up to 28 bar, while specific consumption increased only slightly. Depending on the geometry, NOx or CO and UHC emissions could be reduced.

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Section: Introductionmentioning

confidence: 99%

Computational Investigation on the Performance Increase of a Small Industrial Diesel Engine Regarding the Effects of Compression Ratio, Piston Bowl Shape and Injection Strategy

et al. 2022

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“…The parameters of it are shown in Table 1. This article assumes that cylinder temperature and gas distribution are uniform and symmetrical Therefore, because the number of nozzle is 7, the combustion chamber can be divided into seven parts, and one seventh of it is only need to be calculated, which can greatly simplify mesh and shorten computation time [4]. On the premise of little influence on the result of the calculation simplify the combustion chamber, at the top dead center on grid model is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Simulation Investigation about Combustion and Emission Characteristics of n-Butanol/Diesel Fuel Mixture on Diesel Engine

Wang

Zhu

et al. 2014

AMM

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In this paper, combustion process was simulated on diesel engine with n-butanol/diesel blends in 3000 r/min, 300 Nm using AVL FIRE ESE Diesel. By comparison with indicator diagram, simulation results were consistent with the test results using pure diesel and 5%(volume of n-butanol) n-butanol/diesel blends. Using the calculation model combustion in cylinder is calculated burning B10(mass friction of n-butanol is 10%), B20 and B30 n-butanol /diesel mixture. The results show that the maximum combustion pressure and temperature gradually increases, and accumulated heat of release slightly reduces with the adding of n-butanol. BSFC increases, but indicated efficiency reduces. Mass friction of soot significantly reduce, and mass friction of NOx firstly decreases then increases with the adding of n-butanol. This will provide a basis to the research of n-butanol as substitute fuel.

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A Study on Effect of Piston Bowl Shape on Engine Performance and Emission Characteristics of a Diesel Engine

Sakthisaravanasenthil

Senthilkumar

Sivakumar

2016

Lecture Notes in Mechanical Engineering

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Efficient Approach for Optimization of Piston Bowl Shape, Compression Ratio and EGR for DI Diesel Engine

Cited by 7 publications

References 10 publications

Computational Investigation on the Performance Increase of a Small Industrial Diesel Engine Regarding the Effects of Compression Ratio, Piston Bowl Shape and Injection Strategy

Computational Investigation on the Performance Increase of a Small Industrial Diesel Engine Regarding the Effects of Compression Ratio, Piston Bowl Shape and Injection Strategy

Simulation Investigation about Combustion and Emission Characteristics of n-Butanol/Diesel Fuel Mixture on Diesel Engine

A Study on Effect of Piston Bowl Shape on Engine Performance and Emission Characteristics of a Diesel Engine

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