Effect of 1,4-Dioxane Emulsified Fuel on Diesel Engine Performance and Emission Operating with Varying Injection Timing

2021 ◽  
pp. 197-213
Author(s):  
Vigneswaran Rajendran ◽  
Dhinesh Balasubramanian ◽  
Akash Deep ◽  
Sunil Kumar Mahla
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Injection Timing ◽  
Performance And Emission ◽  
Emulsified Fuel

On the Attainment of Optimum Injection Timing of Pilot Fuel in a Dual Fuel Diesel Engine Run on Biogas

2014 ◽  
Author(s):  
Bhaskor J. Bora ◽  
Ujjwal K. Saha
Keyword(s):  
Diesel Engine ◽  
Fossil Fuels ◽  
Engine Performance ◽  
Biomass Energy ◽  
Dual Fuel ◽  
Injection Timing ◽  
Operational Parameters ◽  
Performance And Emission ◽  
Pilot Fuel ◽  
Immense Potential

The race among the different nations to attain supremacy has given rise to twin crisis: depletion of fossil fuel reserves and degradation of environment. Every nation wants to increase the per capita income by producing more power. In order to achieve this feat, each nation has to burn huge amounts of fossil fuels causing an increase in the emission of greenhouse gases. In this regard, renewable energy can be a panacea to the above mentioned problems. Biogas, one form of biomass energy, has an immense potential as a renewable fuel. This biogas can be used successfully in diesel engines for the generation of power. However, in order to achieve an optimum efficiency, the operating parameters of the biogas run dual fuel engine have to be standardized. In such an engine, injection timing of the pilot fuel is one of the important operational parameters that greatly affects the engine performance. In view of this, in the present paper, an attempt has been made to standardize the injection timing of pilot fuel a biogas run dual fuel diesel engine on the basis of its performance and emission characteristics of. Experimental investigation demonstrates an improvement in efficiency and a reduction in emissions at the injection timing of 29° before top dead centre.

scholarly journals Experimental investigation on performance and emission characteristics of diesel - Jatropha methyl ester blends fueled diesel engine at optimum engine operating parameters

2010 ◽  
Vol 7 (2) ◽  
pp. 399-406 ◽  
Author(s):  
M. Venkatraman ◽  
G. Devaradjane
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Compression Ratio ◽  
Direct Injection ◽  
Engine Performance ◽  
Injection Pressure ◽  
Injection Timing ◽  
Performance And Emission ◽  
Performance And Emissions ◽  
Blended Fuel

In the present investigation, tests were carried out to determine engine performance, combustion and emissions of a naturally aspirated direct injection diesel engine fueled with diesel and Jatropha Methyl ester and their blends (JME10, JME20 and JME30). Comparison of performance and emission was done for different values of compression ratio, injection pressure and injection timing to find best possible combination for operating engine with JME. It is found that the combined compression ratio of 19:1, injection pressure of 240 bar and injection timing of 27?bTDC increases the BTHE and reduces BSFC while having lower emissions.From the investigation, it is concluded that the both performance and emissions can considerably improved for Methyl ester of jatropha oil blended fuel JME20 compared to diesel.

scholarly journals Influence of Advanced Injection Timing and Fuel Additive on Combustion, Performance, and Emission Characteristics of a DI Diesel Engine Running on Plastic Pyrolysis Oil

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ioannis Kalargaris ◽  
Guohong Tian ◽  
Sai Gu
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Engine Performance ◽  
Injection Timing ◽  
Fuel Additive ◽  
Pyrolysis Oil ◽  
Performance And Emission ◽  
Di Diesel Engine ◽  
Unburned Hydrocarbons ◽  
Promising Solution

This paper presents the investigation of engine optimisation when plastic pyrolysis oil (PPO) is used as the primary fuel of a direct injection diesel engine. Our previous investigation revealed that PPO is a promising fuel; however the results suggested that control parameters should be optimised in order to obtain a better engine performance. In the present work, the injection timing was advanced, and fuel additives were utilised to overcome the issues experienced in the previous work. In addition, spray characteristics of PPO were investigated in comparison with diesel to provide in-depth understanding of the engine behaviour. The experimental results on advanced injection timing (AIT) showed reduced brake thermal efficiency and increased carbon monoxide, unburned hydrocarbons, and nitrogen oxides emissions in comparison to standard injection timing. On the other hand, the addition of fuel additive resulted in higher engine efficiency and lower exhaust emissions. Finally, the spray tests revealed that the spray tip penetration for PPO is faster than diesel. The results suggested that AIT is not a preferable option while fuel additive is a promising solution for long-term use of PPO in diesel engines.

Numerical Simulation of an EGR Operated C.R. Diesel Engine

2009 ◽  
Author(s):  
Maria Cristina Cameretti ◽  
Raffaele Tuccillo
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
Fuel Injection ◽  
Nox Reduction ◽  
Engine Performance ◽  
Comprehensive Analysis ◽  
Injection Timing ◽  
Performance And Emission ◽  
Pollutant Formation ◽  
Pollutant Reduction

The authors discuss in this paper the combined effect of the exhaust recirculation rates and of the fuel injection laws on the performance and emission levels of a Common Rail diesel engine. As well known, such objectives often exhibit, conflicting trends specially when the NOx reduction is pursued through the EGR concept; on the other hand, the adoption of this method represents a preliminary tool for proceeding towards the ultimate HCCI goal. The study is carried out on a CFD basis, with an engine numerical simulation that includes the gas exchange periods and it aims at a comprehensive analysis of both the combustion development and the pollutant formation under different conditions induced by different choices of the above operating parameters. The most interesting results refer to the possibility of finding an effective compromise between the pollutant reduction and the engine performance preservation, through a proper combined choice of the EGR level and the injection timing.

Effect of Continuous Hydrogen Injection on Diesel Engine Performance and Emission

2017 ◽  
Vol 11 (4) ◽  
pp. 213
Author(s):  
Mohamad Nordin Mohamad Norani ◽  
Boon Tuan Tee ◽  
Zakaria Muhammad Zulfattah ◽  
Mohamad Norani Mansor ◽  
Md Isa Ali
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Performance And Emission

scholarly journals A Review on the Thermochemical Recycling of Waste Tyres to Oil for Automobile Engine Application

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3837
Author(s):  
Mohammad I. Jahirul ◽  
Farhad M. Hossain ◽  
Mohammad G. Rasul ◽  
Ashfaque Ahmed Chowdhury
Keyword(s):  
Diesel Engine ◽  
Engine Performance ◽  
Calorific Value ◽  
High Viscosity ◽  
Combustion Efficiency ◽  
Fuel Additive ◽  
Pyrolysis Oil ◽  
Performance And Emission ◽  
Automobile Engines ◽  
Direct Use

Utilising pyrolysis as a waste tyre processing technology has various economic and social advantages, along with the fact that it is an effective conversion method. Despite extensive research and a notable likelihood of success, this technology has not yet seen implementation in industrial and commercial settings. In this review, over 100 recent publications are reviewed and summarised to give attention to the current state of global tyre waste management, pyrolysis technology, and plastic waste conversion into liquid fuel. The study also investigated the suitability of pyrolysis oil for use in diesel engines and provided the results on diesel engine performance and emission characteristics. Most studies show that discarded tyres can yield 40–60% liquid oil with a calorific value of more than 40 MJ/kg, indicating that they are appropriate for direct use as boiler and furnace fuel. It has a low cetane index, as well as high viscosity, density, and aromatic content. According to diesel engine performance and emission studies, the power output and combustion efficiency of tyre pyrolysis oil are equivalent to diesel fuel, but engine emissions (NOX, CO, CO, SOX, and HC) are significantly greater in most circumstances. These findings indicate that tyre pyrolysis oil is not suitable for direct use in commercial automobile engines, but it can be utilised as a fuel additive or combined with other fuels.

Two-Stroke Marine Diesel Engine Variable Injection Timing System Performance Evaluation and Optimum Setting for Minimum Fuel Consumption at Acceptable NOx Levels

2014 ◽  
Author(s):  
Dimitrios T. Hountalas ◽  
Spiridon Raptotasios ◽  
Antonis Antonopoulos ◽  
Stavros Daniolos ◽  
Iosif Dolaptzis ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Engine Performance ◽  
Operating Conditions ◽  
Specific Fuel Consumption ◽  
Injection Timing ◽  
Nox Emissions ◽  
Pressure Measurements ◽  
Cylinder Pressure ◽  
Start Of Injection

Currently the most promising solution for marine propulsion is the two-stroke low-speed diesel engine. Start of Injection (SOI) is of significant importance for these engines due to its effect on firing pressure and specific fuel consumption. Therefore these engines are usually equipped with Variable Injection Timing (VIT) systems for variation of SOI with load. Proper operation of these systems is essential for both safe engine operation and performance since they are also used to control peak firing pressure. However, it is rather difficult to evaluate the operation of VIT system and determine the required rack settings for a specific SOI angle without using experimental techniques, which are extremely expensive and time consuming. For this reason in the present work it is examined the use of on-board monitoring and diagnosis techniques to overcome this difficulty. The application is conducted on a commercial vessel equipped with a two-stroke engine from which cylinder pressure measurements were acquired. From the processing of measurements acquired at various operating conditions it is determined the relation between VIT rack position and start of injection angle. This is used to evaluate the VIT system condition and determine the required settings to achieve the desired SOI angle. After VIT system tuning, new measurements were acquired from the processing of which results were derived for various operating parameters, i.e. brake power, specific fuel consumption, heat release rate, start of combustion etc. From the comparative evaluation of results before and after VIT adjustment it is revealed an improvement of specific fuel consumption while firing pressure remains within limits. It is thus revealed that the proposed method has the potential to overcome the disadvantages of purely experimental trial and error methods and that its use can result to fuel saving with minimum effort and time. To evaluate the corresponding effect on NOx emissions, as required by Marpol Annex-VI regulation a theoretical investigation is conducted using a multi-zone combustion model. Shop-test and NOx-file data are used to evaluate its ability to predict engine performance and NOx emissions before conducting the investigation. Moreover, the results derived from the on-board cylinder pressure measurements, after VIT system tuning, are used to evaluate the model’s ability to predict the effect of SOI variation on engine performance. Then the simulation model is applied to estimate the impact of SOI advance on NOx emissions. As revealed NOx emissions remain within limits despite the SOI variation (increase).

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