Effect Of Injection Timing On The Performance And Emissions Of Dual Fuel Engine Operated With Compressed Biogas And Calophyllum Inophyllum Methyl Ester

The use of Jojoba Methyl Ester as a pilot fuel was investigated for almost the first time as a way to improve the performance of dual fuel engine running on natural gas or LPG at part load. The dual fuel engine used was Ricardo E6 variable compression diesel engine and it used either compressed natural gas (CNG) or liquefied petroleum gas (LPG) as the main fuel and Jojoba Methyl Ester as a pilot fuel. Diesel fuel was used as a reference fuel for the dual fuel engine results. During the experimental tests, the following have been measured: engine efficiency in terms of specific fuel consumption, brake power output, combustion noise in terms of maximum pressure rise rate and maximum pressure, exhaust emissions in terms of carbon monoxide and hydrocarbons, knocking limits in terms of maximum torque at onset of knocking, and cyclic data of 100 engine cycle in terms of maximum pressure and its pressure rise rate. The tests examined the following engine parameters: gaseous fuel type, engine speed and load, pilot fuel injection timing, pilot fuel mass and compression ratio. Results showed that using the Jojoba fuel with its improved properties has improved the dual fuel engine performance, reduced the combustion noise, extended knocking limits and reduced the cyclic variability of the combustion.

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Comparison of performance of biodiesels of mahua oil and gingili oil in dual fuel engine

Thermal Science ◽

10.2298/tsci0801151n ◽

2008 ◽

Vol 12 (1) ◽

pp. 151-156 ◽

Cited By ~ 3

Author(s):

Kapilan Nadar ◽

Pratap Reddy ◽

Rao Anjuri

Keyword(s):

Carbon Monoxide ◽

Methyl Ester ◽

Dual Fuel ◽

Injection Timing ◽

Nox Emissions ◽

Test Results ◽

Liquefied Petroleum Gas ◽

Mahua Oil ◽

Hydro Carbon ◽

Pilot Fuel

In this work, an experimental work was carried out to compare the performance of biodiesels made from non edible mahua oil and edible gingili oil in dual fuel engine. A single cylinder diesel engine was modified to work in dual fuel mode and liquefied petroleum gas was used as primary fuel. Biodiesel was prepared by transesterification process and mahua oil methyl ester (MOME) and gingili oil methyl ester (GOME) were used as pilot fuels. The viscosity of MOME is slightly higher than GOME. The dual fuel engine runs smoothly with MOME and GOME. The test results show that the performance of the MOME is close to GOME, at the pilot fuel quantity of 0.45 kg/h and at the advanced injection timing of 30 deg bTDC. Also it is observed that the smoke, carbon monoxide and unburnt hydro carbon emissions of GOME lower than the MOME. But the GOME results in slightly higher NOx emissions. From the experimental results it is concluded that the biodiesel made from mahua oil can be used as a substitute for diesel in dual fuel engine.

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Hydrogen Injection in a Dual Fuel Engine Fueled with Low-Pressure Injection of Methyl Ester of Thevetia Peruviana (METP) for Diesel Engine Maintenance Application

Energies ◽

10.3390/en13215663 ◽

2020 ◽

Vol 13 (21) ◽

pp. 5663 ◽

Cited By ~ 1

Author(s):

Mahantesh Marikatti ◽

N. R. Banapurmath ◽

V. S. Yaliwal ◽

Y.H. Basavarajappa ◽

Manzoore Elahi M Soudagar ◽

...

Keyword(s):

Diesel Engine ◽

Methyl Ester ◽

Gas Flow ◽

Engine Performance ◽

Gaseous Fuel ◽

Dual Fuel ◽

Injection Timing ◽

Thevetia Peruviana ◽

Oil Source ◽

Engine Maintenance

The present work is mapped to scrutinize the consequence of biodiesel and gaseous fuel properties, and their impact on compression-ignition (CI) engine combustion and emission characteristics in single and dual fuel operation. Biodiesel prepared from non-edible oil source derived from Thevetia peruviana belonging to the plant family of Apocynaceaeis. The fuel has been referred as methyl ester of Thevetia peruviana (METP) and adopted as pilot fuel for the effective combustion of compressed gaseous fuel of hydrogen. This investigation is an effort to augment the engine performance of a biodiesel-gaseous fueled diesel engine operated under varied engine parameters. Subsequently, consequences of gas flow rate, injection timing, gas entry type, and manifold gas injection on the modified dual-fuel engine using conventional mechanical fuel injections (CMFIS) for optimum engine performance were investigated. Fuel consumption, CO, UHC, and smoke formations are spotted to be less besides higher NOx emissions compared to CMFIS operation. The fuel burning features such as ignition delay, burning interval, and variation of pressure and heat release rates with crank angle are scrutinized and compared with base fuel. Sustained research in this direction can convey practical engine technology, concerning fuel combinations in the dual fuel mode, paving the way to alternatives which counter the continued fossil fuel utilization that has detrimental impacts on the climate.

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Theoretical study of the effects of pilot fuel quantity and its injection timing on the performance and emissions of a dual fuel diesel engine

Energy Conversion and Management ◽

10.1016/j.enconman.2007.07.003 ◽

2007 ◽

Vol 48 (11) ◽

pp. 2951-2961 ◽

Cited By ~ 100

Author(s):

R.G. Papagiannakis ◽

D.T. Hountalas ◽

C.D. Rakopoulos

Keyword(s):

Diesel Engine ◽

Theoretical Study ◽

Dual Fuel ◽

Injection Timing ◽

Performance And Emissions ◽

Pilot Fuel

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An experimental investigation on performance, emissions, and combustion in a manifold injection for different exhaust gas recirculation flowrates in hydrogen—diesel dual-fuel operations

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1243/09544070jauto921 ◽

2008 ◽

Vol 222 (11) ◽

pp. 2131-2145 ◽

Cited By ~ 4

Author(s):

N Saravanan ◽

G Nagarajan

Keyword(s):

Experimental Investigation ◽

Exhaust Gas Recirculation ◽

Intake Manifold ◽

Dual Fuel ◽

Injection Timing ◽

Exhaust Gas ◽

Exhaust Gases ◽

Injection Duration ◽

Performance And Emissions ◽

Gas Recirculation

Hydrogen is receiving considerable attention as an alternative fuel to replace the rapidly depleting petroleum-based fuels. Its clean burning characteristics help to meet the stringent emission norms. In this experimental investigation a single-cylinder diesel engine was converted to operate in hydrogen—diesel dual-fuel mode. Hydrogen was injected in the intake manifold and the diesel was injected directly inside the cylinder. The injection timing and the injection duration of hydrogen were optimized on the basis of performance and emissions. Best results were obtained with hydrogen injection at gas exchange top dead centre with an injection duration of 30° crank angle. The flowrate of hydrogen was optimized as 7.5l/min with optimized injection timing and duration. The optimized exhaust gas recirculation (EGR) flowrate was 20 per cent at 75 per cent load. The optimized timings were chosen on the basis of performance, emission, and combustion characteristics. The EGR technique was adopted in the hydrogen—diesel dual-fuel mode by varying the EGR flowrate from 0 per cent to 25 per cent in steps of 5 per cent. The maximum quantity of exhaust gases recycled during the test was 25 per cent (up to 75 per cent load); beyond that unstable combustion was observed with an increase in smoke. The brake thermal efficiency with 20 per cent EGR decreases by 9 per cent compared with diesel. The nitrogen oxide (NO x) emission in hydrogen manifold injection decreases by threefold with 20 per cent EGR operation at full load. The NO x emission tends to reduce drastically with increase in the EGR percentage at all load conditions owing to the increase in heat capacity of the exhaust gases. The smoke decreases by 80 per cent in the dual-fuel operation compared with diesel at 75 per cent load.

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Combustion, performance and emissions of a DI-CI engine running on Karanj methyl ester: influence of injection timing

International Journal of Sustainable Engineering ◽

10.1080/19397038.2010.535922 ◽

2011 ◽

Vol 4 (2) ◽

pp. 136-144 ◽

Cited By ~ 6

Author(s):

S. Jindal

Keyword(s):

Methyl Ester ◽

Injection Timing ◽

Combustion Performance ◽

Performance And Emissions ◽

Ci Engine

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Numerical Evaluation of the Effects of Compression Ratio and Diesel Fuel Injection Timing on the Performance and Emissions of a Fumigated Natural Gas–Diesel Dual-Fuel Engine

Journal of Energy Engineering ◽

10.1061/(asce)ey.1943-7897.0000326 ◽

2016 ◽

Vol 142 (2) ◽

Cited By ~ 11

Author(s):

Roussos G. Papagiannakis ◽

Dimitrios T. Hountalas ◽

Sundar Rajan Krishnan ◽

Kalyan Kumar Srinivasan ◽

Dimitrios C. Rakopoulos ◽

...

Keyword(s):

Natural Gas ◽

Compression Ratio ◽

Diesel Fuel ◽

Numerical Evaluation ◽

Fuel Injection ◽

Dual Fuel ◽

Injection Timing ◽

Fuel Injection Timing ◽

Performance And Emissions ◽

Diesel Fuel Injection

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Influence of injection timing and exhaust gas recirculation of a Calophyllum inophyllum methyl ester fuelled CI engine

Fuel Processing Technology ◽

10.1016/j.fuproc.2017.06.024 ◽

2017 ◽

Vol 167 ◽

pp. 18-30 ◽

Cited By ~ 52

Author(s):

B. Ashok ◽

K. Nanthagopal ◽

R. Thundil Karuppa Raj ◽

J. Pradeep Bhasker ◽

D. Sakthi Vignesh

Keyword(s):

Methyl Ester ◽

Exhaust Gas Recirculation ◽

Injection Timing ◽

Exhaust Gas ◽

Calophyllum Inophyllum ◽

Ci Engine ◽

Gas Recirculation

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Analysis to Determine Performance and Emission Characteristics of Diesel Blended with Calophyllum Inophyllum Methyl Ester (CIME) in a VCR Engine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.854.78 ◽

2016 ◽

Vol 854 ◽

pp. 78-86 ◽

Cited By ~ 1

Author(s):

M. Ranjithkumar ◽

S. Varunraj ◽

J. Raghav ◽

T. Thangavel

Keyword(s):

Methyl Ester ◽

Compression Ratio ◽

Fatty Acid Content ◽

Emission Characteristics ◽

Hydrocarbon Gases ◽

Calophyllum Inophyllum ◽

Performance And Emission ◽

Maximum Benefit ◽

Performance And Emissions ◽

Fuel Industry

The energy sources present in our world is dwindling day by day, in order to overcome these shortages an experimental analysis and investigation was carried out to get maximum benefit from the available resources .There are variety of fuels available suiting to the various requirement and it is mainly chosen on the basis of viscosity and free fatty acid content. An experimental study was conducted on the performance and emission characteristics of Variable Compression Ratio (VCR) diesel engine with Calophyllum Inophyllum Methyl Ester (CIME). A four stroke, single cylinder and water cooled engine of 4.4 kW rating and compression ratio 17.5:1, 18:1 and 18.5:1 was used for the experiment. Also the blend of B20 (20%CIME+80%Diesel), B40 (40%CIME+60%Diesel) and B60 (60%CIME+40%Diesel) biodiesel was used for conducting the performance and emissions tests at varying load conditions. Various parameters such as brake thermal efficiency, brake specific fuel consumption and emissions of smoke and unburnt hydrocarbon gases in exhaust were recorded .In order to satisfy these escalating needs, potential feedstock for biodiesel was analysed and process was carried out .Production of biodiesel from plant gives the tremendous way to overcome all the difficulties. The compression ratio has been set at 17.5, 18, and 18.5 to know the various characteristics of bio fuel. The type of software used to carry out the experiments are AVL INDICOM MOBILE software version v2.5 .The rated power and compression ratio were 4.4 kw and 16-22:1 .There will be an enormous growth in alternative fuel industry and it will be the future source of energy.

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