The effects of n-pentanol, di-n-butyl ether (DBE) and exhaust gas recirculation on performance and emissions in a compression ignition engine

Wang, Qiwei; Yin, Sheng; Ni, Jimin

doi:10.1016/j.fuel.2020.118961

Cited by 28 publications

(3 citation statements)

References 39 publications

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“…Diesel contains a cetane number, which reflects to its quality as a diesel fuel. The higher the cetane number, the effortless it is to ignite the diesel (Wang, Yin & Ni, 2021).…”

Section: A Sample Composition and Morphology Analysis Using Sem-edxmentioning

confidence: 99%

The Function of Organic Additives in Enhancing the Q-values for Peat Pellet Biofuel

Hashim¹,

Embong²

2021

ASMScJ

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In Malaysia, peat make up for around 7.5 % of the entire land area. The positive effect of the vast wet organic compounds accumulates over a long time has stored high content of soil’s carbon which are highly useful as fuel and biomass energy generation. Thus, this study gives an outline of peat pellet as potential biofuel energy. The peat pellets were soaked into several kinds of flammable additives such as petrol, kerosene and diesel. The percentages of 69.41 % of carbon, 28.73% of oxygen and 0.97% of silicon were obtained using Energy Dispersive X-ray (EDX). The Fourier-Transformed Infrared (FTIR)- Attenuated Total Reflectance (ATR) Spectroscopy was used to identify the sample. From the spectra, it reveals that most of the additives contribute mainly functional groups with hydroxyl, alcohol and phenol groups were found leading to higher boiling and melting points. The heat combustion properties of peat pellets were evaluated using a calorimeter technique by boiling off 50 ml and 100 ml of water. The pellet with diesel has the highest Q-values and combustion rate due to larger number of carbons in rigid molecular structure. The high amount of unique chemical compound found naturally in diesel known as cetane, ignites effortlessly when heated gives diesel additional advantages in shorter ignition delays as well as longer duration of combustion.

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“…Diesel contains a cetane number, which reflects to its quality as a diesel fuel. The higher the cetane number, the effortless it is to ignite the diesel (Wang, Yin & Ni, 2021).…”

Section: A Sample Composition and Morphology Analysis Using Sem-edxmentioning

confidence: 99%

The Function of Organic Additives in Enhancing the Q-values for Peat Pellet Biofuel

Hashim¹,

Embong²

2021

ASMScJ

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“…Compared with the waste edible oil/diesel mixture, the HC and CO emissions of the ternary mixture are reduced, while the CO 2 and NO x emissions are increased. Wang et al 128 studied the effects of DBE addition to diesel/ n -pentanol blends on the combustion and emission characteristics of an engine. They found that compared with diesel/ n -pentanol blends, DBE addition reduces ignition delay and increases BTE.…”

Section: Application Of Ether and Ester Fuels In Ic Enginesmentioning

confidence: 99%

Ethers and esters as alternative fuels for internal combustion engine: A review

Hua

2021

International Journal of Engine Research

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Ether and ester fuels can work in the existing internal combustion (IC) engine with some important advantages. This work comprehensively reviews and summarizes the literatures on ether fuels represented by DME, DEE, DBE, DGM, and DMM, and ester fuels represented by DMC and biodiesel from three aspects of properties, production and engine application, so as to prove their feasibility and prospects as alternative fuels for compression ignition (CI) and spark ignition (SI) engines. These studies cover the effects of ether and ester fuels applied in the form of single fuel, mixed fuel, dual-fuel, and multi-fuel on engine performance, combustion and emission characteristics. The evaluation indexes mainly include torque, power, BTE, BSFC, ignition delay, heat release rate, pressure rise rate, combustion duration, exhaust gas temperature, CO, HC, NOx, PM, and smoke. The results show that ethers and esters have varying degrees of impact on engine performance, combustion and emissions. They can basically improve the thermal efficiency of the engine and reduce particulate emissions, but their effects on power, fuel consumption, combustion process, and CO, HC, and NOx emissions are uncertain, which is due to the coupling of operating conditions, fuel molecular structure, in-cylinder environment and application methods. By changing the injection strategy, adjusting the EGR rate, adopting a new combustion mode, adding improvers or synergizing multiple fuels, adverse effects can be avoided and the benefits of oxygenated fuel can be maximized. Finally, some challenges faced by alternative fuels and future research directions are analyzed.

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“…However, as the EGR rate exceeds (40%), NO x emissions drop to extremely low levels, and the reduction becomes less noticeable as the EGR rates increase. Wang et al [23] studied the effect of adding (DBE) to a diesel/n-pentanol (DP) mixture on an engine's combustion and emissions performance at various EGR rates. The experiment employed a four-cylinder diesel engine with a CR (16.5) at a constant speed (1500rpm).…”

Section: Introductionmentioning

confidence: 99%

Study Effect of Exhaust Gas Recirculation upon Emissions and Performance by Using European Diesel and Iraqi diesel

Jamal¹,

Saleh²

2022

ETJ

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 Iraqi diesel produces higher NOx emissions than European diesel.  Engine performance degrades with the EGR system.  NOx emissions are reduced with the increase of EGR.  CO and UHC emissions increased with the increase of EGR.This study investigated the effect of exhaust gas re-circulation (EGR) on performance and exhaust emissions in a single-cylinder, air-cooled, and directinjection diesel engine. The Iraqi diesel fuel (D100) and European diesel fuel (ED100) were utilized at different speeds from (2100 to 3300 in intervals of 300) using the recycling of exhaust gas by a ratio (0%, 5%, 10%, 15%, and 20%. The study showed that European diesel fuel positively impacts engine performance and emissions. Compared to Iraqi diesel fuel, European decreased diesel fuel the brake-specific fuel consumption by (10.96%), increased brake thermal efficiency by (8.67%), decreased exhaust gas temperature by (9.99%), and (NO X , UHC, and decreased (CO) emissions by (7.94%, 10.07%, and 36.98%) respectively. When using the EGR ratio, the highest percentage that can be used is (20%). If this percentage exceeds this, it will cause a flame loss because the recycled gases are inert. Furthermore, the results indicate that brake-specific fuel consumption increases by (15.395%) and brake thermal efficiency decreases by (13.44%) with increased EGR ratio. In contrast, exhausting gas temperature and NO X emissions decreases by (4.01% and 14.57%) respectively. Finaly, the UHC and CO emissions increased with the increase of EGR ratio.

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The effects of n-pentanol, di-n-butyl ether (DBE) and exhaust gas recirculation on performance and emissions in a compression ignition engine

Cited by 28 publications

References 39 publications

The Function of Organic Additives in Enhancing the Q-values for Peat Pellet Biofuel

The Function of Organic Additives in Enhancing the Q-values for Peat Pellet Biofuel

Ethers and esters as alternative fuels for internal combustion engine: A review

Study Effect of Exhaust Gas Recirculation upon Emissions and Performance by Using European Diesel and Iraqi diesel

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