scholarly journals Influence of water/diesel emulsified fuel on diesel engine characteristics

2019 ◽  
Vol 23 (Suppl. 5) ◽  
pp. 1749-1755
Author(s):  
Breda Kegl ◽  
Luka Lesnik
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
Water Content ◽  
Injection Pressure ◽  
Gas Temperature ◽  
Engine Torque ◽  
Reduction Of No ◽  
Emulsified Fuel ◽  
Influence Of Water ◽  
Rate Of Heat Release

The paper deals with water/diesel emulsion effects on injection and combustion characteristics of a bus Diesel engine. The influences of water content in water/diesel emulsion are investigated by numerical simulation. Higher content of water in water/diesel emulsion increases the injection pressure and decreases the in-cylinder gas pressure, in-cylinder gas temperature, and rate of heat release, this leads to lower engine torque and power. The obtained results indicate a possibility of essential reduction of NO x and soot emissions by increasing water content.

scholarly journals Influence of Water Content Ratio on Combustion Fluctuation of Diesel Engine Using Emulsified Fuel

1997 ◽  
Vol 32 (6) ◽  
pp. 433-440
Author(s):  
Yasufumi Yoshimoto ◽  
Toshinori Kuramoto ◽  
Ziye Li ◽  
Minoru Tsukahara
Keyword(s):  
Diesel Engine ◽  
Water Content ◽  
Emulsified Fuel ◽  
Content Ratio ◽  
Influence Of Water

The performance and emission characteristics of emulsified fuel in a direct injection diesel engine

2007 ◽  
Vol 221 (7) ◽  
pp. 893-900 ◽  
Author(s):  
M P Ashok ◽  
C G Saravanan
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Injection Pressure ◽  
Alternative Fuel ◽  
Experimental Investigations ◽  
Maximum Speed ◽  
Power Sources ◽  
Performance And Emission ◽  
Emulsified Fuel

Diesel engines are employed as the major propulsion power sources because of their simple, robust structure and high fuel economy. It is expected that diesel engines will be widely used in the foreseeable future. However, an increase in the use of diesel engines causes a shortage of fossil fuel and results in a greater degree of pollution. To regulate the above, identifying an alternative fuel to the diesel engine with less pollution is essential. Ethanol–diesel emulsion is one such method, used for the preparation of an alternative fuel for the diesel engine. Experimental investigations were carried out to compare the performance of diesel fuel with different ratios 50D: 50E (50 per cent diesel No: 2: 50 per cent ethanol –100 per cent proof) and 60D: 40E emulsified fuels. In the next phase, experiments were conducted for the selected emulsified fuel ratio 50D: 50E for different high injection pressures and the results are compared. The results show that for the emulsified fuel ratios, there is a marginal increase in torque, power, NO x, emissions, and decreasing values of carbon monoxide (CO), sulphur dioxide (SO2) emissions at the maximum speed conditions, compared with diesel fuel. Also, it is found that an increase in injection pressure of the engine running with emulsified fuel decreases CO and smoke emissions especially between 1500 to 2000 r/min with respect to the diesel fuel.

Characterization of the Nonroad Modified Diesel Engine Using a Novel Entropy-VIKOR Approach: Experimental Investigation and Numerical Simulation

2019 ◽  
Vol 141 (8) ◽  
Author(s):  
Pushpendra Kumar Sharma ◽  
Dilip Sharma ◽  
Shyam Lal Soni ◽  
Amit Jhalani
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
Engine Performance ◽  
Injection Pressure ◽  
Multicriteria Decision Making ◽  
Operating Parameters ◽  
Injection Timing ◽  
Oxides Of Nitrogen ◽  
Compression Ignition Engine ◽  
Continuous Increase

Excessive use of diesel engines and continuous increase in environmental pollution has drawn the attention of researchers in the area of the compression ignition engine. In this research article, an innovative investigation of the nonroad modified diesel engine is reported with the effective use of the hybrid Entropy-VIKOR approach. Hence, it becomes necessary to prioritize and optimize the performance defining criteria, which provides higher BTE along with lower emission simultaneously. The engine load, injection timing (Inj Tim), injection pressure (Inj Pre), and compression ratio (Com R) were selected as engine operating parameters for experimentation at the constant speed of 1500 rpm engine. The effect on engine performance parameters (BTE and BSEC) and emission (carbon monoxide (CO), total oxide of carbon (TOC), oxides of nitrogen (NOx), hydrocarbon (HC), and smoke) was studied experimentally. The optimum results were observed at load 10.32 kg, Inj Tim 20 deg btdc, Inj Pre 210 bar, and Com R 21:1 at which highest BTE of 22.24% and lowest BSEC of 16,188.5 kJ/kWh were obtained. Hybrid entropy-VIKOR approach was applied to establish the optimum ranking of the nonroad modified diesel engine. The experimental results and numerical simulation show that optimizing the engine operating parameters using the entropy-VIKOR multicriteria decision-making (MCDM) technique is applicable.

Numerical Simulation Research of the Effect of Injection Pressure on Diesel Engine with High-Pressured Common Rail System

2010 ◽  
Vol 43 ◽  
pp. 173-177
Author(s):  
Jie Hui Li ◽  
Bing Cheng Yan ◽  
Lin Shan Guo ◽  
Chang Jun Chen
Keyword(s):  
Numerical Simulation ◽  
Particulate Matter ◽  
Diesel Engine ◽  
Nitrogen Oxide ◽  
Fuel Economy ◽  
Injection Pressure ◽  
Common Rail ◽  
Common Rail System ◽  
Simulation Research ◽  
Rail System

Through combustion’s numerical simulation of the diesel engines with the high-pressured common rail system (Common-rail), this article researches the effect of injection pressure on the heat release rate, the emission quantity of nitrogen oxide and particulate matter. The results show that the advance of injection pressure could improve power and fuel economy performance. In order to reduce the emission quantity of nitrogen oxide and particulate matter, the earlier combustion should be controlled appropriately, when we enhance the injection pressure of Common-rail.

scholarly journals Experimental of 4S Diesel Engine using Biofuel Blends with Enrichment of C2H2 Gas

2019 ◽  
Vol 8 (11) ◽  
pp. 1263-1267
Keyword(s):  
Diesel Engine ◽  
Fossil Fuel ◽  
Injection Pressure ◽  
Calorific Value ◽  
Waste Cooking Oil ◽  
Gas Temperature ◽  
Ic Engine ◽  
Auto Ignition ◽  
Exhaust Gas Temperature ◽  
Diesel Operation

In the present scenario owing to the depletion of fossil fuel and at the same time increase in demand averts the researchers towards the alternative fuel. Various investigation are being carried out to find the most suitable alternate for the fossil fuel in IC engine, which satisfies the demand, improves the performance and decreases the emission. This paper deals with the multi fuel mode. Tests were performed at 4S mono cylinder dual fuel diesel engine with blends of acetylene in different proportions (0.199 kg/hr., 0.394 kg/hr. and 0.588 kg/hr.) with 20% waste cooking oil at a rated injection pressure of 200bar.The result shows the increased in BTE and deceased BSFC and exhaust gas temperature, furtherance the decrease in NOx and CO are observed as the amount of acetylene increases. BTE increases due to the lower auto ignition temperature and high calorific value of acetylene. Graphs were obtained based on the performance of the engine and B20 with 0.394 kg/hr. of acetylene is concluded to be optimum, B20 with 0.199 kg/hr. of acetylene shows the result similar to diesel operation, at B20 with 0.588 kg/hr. of acetylene increase in the knocking effect was observed.

Injection Timing Variation and its Influence on the Performance and Combustion Characteristics on a Direct Injection CI Engine

2018 ◽  
Vol 10 (1) ◽  
Author(s):  
V. Hariram ◽  
S. Seralathan ◽  
M. Rajasekaran ◽  
G. John
Keyword(s):  
Direct Injection ◽  
Pressure Rise ◽  
Engine Performance ◽  
Injection Pressure ◽  
Injection Timing ◽  
Gas Temperature ◽  
Optimum Parameters ◽  
Rate Of Heat Release ◽  
Ci Engine ◽  
And Performance

The present experimental investigation aims at improving the combustion and performance parameters by varying the injection timing. A 3.5 kW single cylinder stationary CI engine equipped with eddy current dynamometer is used in this investigation. The static injection timing is varied using spill method by an advancement and retirement of 2 CAD with respect to standard injection timing of 23 BTDC. On comparison with the standard injection timing, the brake thermal efficiency, cylinder pressure, rate of heat release, mean gas temperature and rate of pressure rise are found to increase along with a significant decrease in brake specific fuel consumption for an advanced injection timing of 21 BTDC. Negative improvement is observed with respect to retarded injection timing of 25 BTDC. Optimum parameters for enhanced engine performance is found to be 21 BTDC injection timing with a 200 bar injection pressure at rated speed.

scholarly journals The effect of Diesel-Methanol Blends with Volumetric Proportions on The Performance and Emissions of A Diesel Engine

Mechanika ◽  
2019 ◽  
Vol 25 (5) ◽  
pp. 363-369 ◽  
Author(s):  
ADNAN BERBER
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Direct Injection ◽  
Engine Performance ◽  
Exhaust Emission ◽  
Gas Temperature ◽  
Engine Torque ◽  
Performance And Emissions ◽  
Maximum Decrease

In this work, the methanol is added to the diesel fuel in the volumetric proportions of 5%-%10-%15 to diminish negative environmental impacts of diesel engines. The diesel-methanol blends in the various proportions are tested in a single-cylinder direct-injection diesel engine. According to the test results, the addition of methanol to the diesel fuel causes a maximum decrease of 13.07 % in the engine torque, and a maximum decrease of 12.54 % in the specific fuel consumption. On the other hand, the exhaust emission results show that the values of CO and CO2 decrease 38.4 % and 5.04%. However, the increase of 3.66% in the exhaust gas temperature causes the increase of 17.1% in the NOx emission. Also, a significant decrease of 39.37% in the smoke opacity is observed compared to that of the diesel fuel. Although the addition of methanol to diesel fuel causes a slightly decrease in the engine performance, the diesel-methanol blends have a reasonable and considerable positive effect on environmental concerns of diesel engines.

Experimental Investigation on the Effects of Diethyl Ether Additive on Cashew Nut Shell Liquid Biodiesel

2014 ◽  
Vol 984-985 ◽  
pp. 924-931 ◽  
Author(s):  
T. Pushparaj ◽  
M.Anto Alosius ◽  
S. Ramabalan
Keyword(s):  
Diesel Engine ◽  
Diethyl Ether ◽  
Diesel Fuel ◽  
Direct Injection ◽  
Biodiesel Production ◽  
Gas Temperature ◽  
Cashew Nut Shell Liquid ◽  
Engine Torque ◽  
Cashew Nut ◽  
Cashew Nut Shell

Vegetable oils are a potential alternative to partial or total substitution of diesel fuels. In this study, we used diethyl ether as an additive to investigate the possible use of increased percentages of biodiesel in diesel engine without any retrofitting. Biodiesel was made by pyrolysis process. Cashew nut shell liquid (CNSL) was selected for biodiesel production. Number 2 diesel fuel containing 20% biodiesel and 80% diesel fuel, is called here as B20. The effects of diethyl ether, blended with B20 in 5, 10, 15 % by volume were used in a single cylinder, four strokes direct injection diesel engine. The effect of test fuels on engine torque, power, brake specific fuel consumption, brake thermal efficiency, exhaust gas temperature, were ascertained by performance tests. The influence of blends on CO, CO2, HC, NO and smoke opacity were evaluated by emission tests. The experimental results showed that the exhaust emissions were fairly reduced for 10% diethyl ether with B20; especially the NO is reduced remarkably by 69.4% while comparing B20.

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