Preliminary Optimization of the PCCI Combustion Mode in a Diesel Engine through a Design of Experiments

D’Ambrosio, Stefano; Iemmolo, Daniele; Mancarella, Alessandro; Vitolo, Roberto

doi:10.1016/j.egypro.2016.11.115

Cited by 25 publications

(6 citation statements)

References 21 publications

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“…These combustion concepts also suffer from high combustion noise, limited operating range and high cycle-to-cycle variations [4][5][6]. Many technical solutions, such as alternative fuels, multiple split injections and optimized engine parameters, are proposed to reduce the drawbacks in PCCI combustion [7][8][9][10]. To anticipate and improve the operating parameters of diesel engines, a variety of techniques are used, including response surface methodology (RSM), Taguchi-Grey relational analysis, genetic algorithms, particle swarm optimization, artificial neural networks, and fuzzy logic [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Combustion noise characterization and optimization of PCCI combustion using response surface methodology

Datta Bharadwaz Yellapragada,

Kumari

2023

JMES

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The current work aims at characterizing the premixed charge compression ignition (PCCI) combustion with regression-based approach using response surface methodology. PCCI operating parameters such as load, pilot injection timing, main injection timing, pilot injection quantity, exhaust gas recirculation and injection pressure are considered as input variables. Engine performance indicators such as brake thermal efficiency, brake specific fuel consumption, carbon monoxide (CO), hydrocarbon (HC), oxide of nitrogen (NOx), smoke emissions, combustion phasing and combustion noise metric ringing intensity are considered as output responses. Experimental results validate the optimal solution from response surface methodology approach, and good agreement is found between mathematical models and experimental results. Comparative examination of optimized PCCI combustion versus conventional combustion showed a 66% and 44% decrement in NOx and smoke emissions. Except for CO and HC emissions, the percentage penalty of other responses with PCCI combustion is less than 10%. In addition to ringing intensity another combustion noise metric combustion noise level is computed from Fast Fourier Transform (FFT) analysis of cylinder pressure trace. A combustion noise level of 73.26 dB is obtained at optimized conditions.

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Section: Introductionmentioning

confidence: 99%

Combustion noise characterization and optimization of PCCI combustion using response surface methodology

Datta Bharadwaz Yellapragada,

Kumari

2023

JMES

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“…In diesel HCCI, airfuel mixture formation occurs in the intake event itself by using the fuel vaporizer technologies [18]. In PCCI well advanced direct fuel injection timing is performed [19], and in MK concept retarded direct injection of fuel with higher EGR dilution and swirl ratio was used to achieve LTC operation in diesel engines [20].…”

Section: Introductionmentioning

confidence: 99%

A study on flexible dual-fuel and flexi combustion mode engine to mitigate NO, soot and unburned emissions

Duraisamy

Rangasamy

Hossain

2022

Fuel

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“…Selective catalyst reduction [ 1 , 2 ] to reduce NOx emissions and chemical kinetics to control in-cylinder combustion and heat transfer [ 3 ] have achieved certain results in diesel engines. In addition, new combustion technology research has also become a feasible method to improve engine efficiency and reduce emissions, such as homogeneous charge compression ignition [ 4 ], premixed charge compression ignition [ 5 ], and reactive control compression ignition (RCCI) [ 6 ]. However, these new gasoline engine technologies are increasingly becoming sensitive to the physical properties (e.g., density and viscosity) and chemical properties (e.g., flame propagation) of gasoline fuels [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of a Chemical Kinetic Model of Five-Component Gasoline Surrogates under Lean Conditions

Yang

Zheng

2022

Molecules

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The requirements for improving the efficiency of internal combustion engines and reducing emissions have promoted the development of new combustion technologies under extreme operating conditions (e.g., lean combustion), and the ignition and combustion characteristics of fuels are increasingly becoming important. A chemical kinetic reduced mechanism consisting of 115 species and 414 elementary reactions is developed for the prediction of ignition and combustion behaviors of gasoline surrogate fuels composed of five components, namely, isooctane, n-heptane, toluene, diisobutylene, and cyclohexane (CHX). The CHX sub-mechanism is obtained by simplifying the JetSurF2.0 mechanism using direct relationship graph error propagating, rate of production analysis, and temperature sensitivity analysis and CHX is mainly consumed through ring-opening reactions, continuous dehydrogenation, and oxygenation reactions. In addition, kinetic parameter corrections were made for key reactions R14 and R391 based on the accuracy of the ignition delay time and laminar flame velocity predictions. Under a wide range of conditions, the mechanism’s ignition delay time, laminar flame speed, and the experimental and calculated results of multi-component gasoline surrogate fuel and real gasoline are compared. The proposed mechanism can accurately reproduce the combustion and oxidation of each component of the gasoline-surrogate fuel mixture and real gasoline.

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Preliminary Optimization of the PCCI Combustion Mode in a Diesel Engine through a Design of Experiments

Cited by 25 publications

References 21 publications

Combustion noise characterization and optimization of PCCI combustion using response surface methodology

Combustion noise characterization and optimization of PCCI combustion using response surface methodology

A study on flexible dual-fuel and flexi combustion mode engine to mitigate NO, soot and unburned emissions

Construction of a Chemical Kinetic Model of Five-Component Gasoline Surrogates under Lean Conditions

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