Performance and Emission Characteristics of a Diesel Engine with Various Injection Pressures Using Bael Biodiesel

2014 ◽  
Vol 592-594 ◽  
pp. 1714-1718 ◽  
Author(s):  
A. Dhanamurugan ◽  
R. Subramanian
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection Pressure ◽  
Brake Thermal Efficiency ◽  
Performance And Emission ◽  
Fuel Jet ◽  
Biodiesel Blend ◽  
Fuel Consumption And Emissions ◽  
Injection Pressures

Fuel injection pressures in diesel engines play an important role to distribute the fuel jet quickly and to form a uniform gas mixture after fuel injection in order to reduce fuel consumption and emissions. In this study, an attempt has been made to study the effect of injection pressure on a single cylinder direct injection diesel engine fueled with diesel, diesel – bael biodiesel blend (B20) and methyl ester of bael (Aegle marmelos) seed oil with injection pressures of 220,230,240 and 250 bar. Increasing the injector opening pressure has been found to increase brake thermal efficiency and reduce CO, HC and smoke emissions significantly. The optimum injection pressure was found to be 240 bar for bael seed biodiesel.

scholarly journals The Effect of High Fuel Injection Pressure on CRDI Diesel Engine Fueled with Algae Biofuel

2020 ◽  
Vol 9 (1) ◽  
pp. 2614-2619
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection Pressure ◽  
Experimental Investigations ◽  
Brake Thermal Efficiency ◽  
Algae Biofuel ◽  
The Difference ◽  
Fuel Injection Pressure ◽  
Injection Pressures

Experimental investigations were conducted to determine the performance & emission features of a common rail direct injection (CRDI) system using algae biofuel to aid diesel engine. The algae biofuel-diesel blends were taken in two different proportions, B10 & B15 (10% and 15% of algae biofuel is mixed with diesel on a volumetric approach). The tests were conducted on CRDI diesel engine at various injection pressures from 600 to 1050 bar with the difference of 150 bar. From the results it was exposed that at high fuel injection pressure (1050 bar), brake thermal efficiency (BTE) improved and brake specific fuel consumption (BSFC) reduced when related with other injection pressures. CO, HC &/smoke density significantly decreases with rise in injection pressures. However, NOx emissions are shown to be increased. At different load conditions, biodiesel algae are associated with higher exhaust gas temperatures.

Experimental Evaluation of Compression Ignition Engine Fueled with Cashew Nut Shell Liquid Diesel Blend with the Effect of Various Injection Pressures

2015 ◽  
Vol 787 ◽  
pp. 717-721
Author(s):  
Sangeetha Krishnamoorthy ◽  
K. Rajan ◽  
K.R. Senthil Kumar ◽  
M. Prabhahar
Keyword(s):  
Diesel Engine ◽  
Direct Injection ◽  
Injection Pressure ◽  
Cashew Nut Shell Liquid ◽  
Compression Ignition Engine ◽  
Brake Thermal Efficiency ◽  
Performance And Emission ◽  
Full Load ◽  
Cashew Nut ◽  
Cashew Nut Shell

This paper investigates the performance and emission characteristics of 20% cashew nut shell liquid (CNSL)-diesel blend (B20) in a direct injection diesel engine. The cashew nut shell liquid was prepared by pyrolysis method. The test was conducted with various nozzle opening pressures like 200 bar, 225 bar and 250 bar at different loads between no load to full load. The results showed that the brake thermal efficiency was increased by 2.54% for B20 with 225 bar at full load. The CO and smoke emissions were decreased by 50% and 14% respectively and the NOx emission were decreased slightly with 225 bar injection pressure compared with 200 bar and 250 bar at full load. On the whole, it is concluded that the B20 CNSL blend can be effectively used as a fuel for diesel engine with 225 bar injection pressure without any modifications.

An Investigation on the Performance of a Diesel Engine Using Rubber Seed Oil–Diesel Blends

2014 ◽  
Vol 71 (1) ◽  
Author(s):  
P. Shanmughasundaram ◽  
T. I. Manosh ◽  
R. Sivaprakasam
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Seed Oil ◽  
Direct Injection ◽  
Mechanical Efficiency ◽  
Performance Parameters ◽  
Rubber Seed Oil ◽  
Brake Thermal Efficiency ◽  
Performance And Emission ◽  
Biodiesel Blend

In this study, the performance and emission characteristics were analyzed by using rubber biodiesel in a single cylinder direct injection diesel engine. The experiments were conducted using different combination of fuels such as 20%, 50% of biodiesel blends by volume (B20 and B50) with pure diesel fuel, pure biodiesel (B100) and pure diesel fuel (B0). The performance parameters were obtained for different load conditions from No load to Full load at rated rpm. Results indicated that the higher brake thermal efficiency, Mechanical efficiency, reduced specific fuel consumption obtained for biodiesel blend of B20, compared to other blends and diesel fuel.

scholarly journals An Experimental Assessment on the Influence of High Fuel Injection Pressure with Ternary Fuel (Diesel-Mahua methyl ester-Pentanol) on Performance, Combustion and Emission Characteristics of Common Rail Direct Injection Diesel Engine

2021 ◽  
Author(s):  
Jatoth Ramachander ◽  
Santhosh Kumar Gugulothu ◽  
Gadepalli Ravikiran Sastry ◽  
Burra Bhsker
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Thermal Efficiency ◽  
Fuel Injection ◽  
Direct Injection ◽  
Injection Pressure ◽  
Brake Thermal Efficiency ◽  
Direct Injection Diesel Engine ◽  
Fuel Injection Pressure ◽  
Ternary Fuel

Abstract This paper deals with analysis of the influence of fuel injection pressure with ternary fuel (diesel + Mahua methyl ester + Pentanol) on the emission, combustion and performance characteristics of a four stroke, single cylinder, common rail direct injection diesel engine working at a constant speed and varying operating scenarios. The usage of ternary fuel raised the NOx emission (12.46%) value and specific fuel consumption (SFC) with a decrease in the BTE (brake thermal efficiency) which attributes to its properties and combustion characteristics. The combustion process was affected by the physical properties of the blended fuel such as volatility and viscosity and this eventually affected the performance of the engine. The fuel injection pressure is varied from 20 MPa to 50 MPa so that ternary fuel can be properly utilized. The high injection pressure of 50 MPa has better combustion characteristics and higher brake thermal efficiency (4.39%) value than other injection pressure values. A better mixture is formed due to well atomized spray and as a result, the levels of CO (22.24%), HC (9.49%) and smoke (7.5%) falls with the increase in injection pressure.

Effect of Fuel Injection Pressure and Preheating on the Performance and Emissions of a Vegetable Oil Fuelled Diesel Engine

2004 ◽  
Author(s):  
Pugazhvadivu Serane ◽  
Jeyachandran Krishnamurthy
Keyword(s):  
Diesel Engine ◽  
Vegetable Oil ◽  
Fuel Injection ◽  
Direct Injection ◽  
Specific Energy Consumption ◽  
Injection Pressure ◽  
Operating Conditions ◽  
Frying Oil ◽  
Waste Frying Oil ◽  
Performance And Emission

In the present investigation, waste frying oil, a non-edible vegetable oil is used as a diesel fuel substitute. Performance and emission tests were carried out in a naturally aspirated, single cylinder, direct injection diesel engine with and without preheating the waste frying oil and with fuel injection pressures of 190 bar, 210 bar, 230 bar and 250 bar. Performance parameters such as brake specific energy consumption and brake thermal efficiency and emission parameters such as NOx and smoke density were evaluated at various operating conditions. Increasing the injection pressure with and without preheating the fuel is found to improve the performance and reduce smoke emissions. At these conditions, the NOx concentration is seen to increase, however it is lower than pure diesel operation.

Influence of Injection Pressure on Performance and Emission Characteristics of Nerium Methyl Ester Operated DI Diesel Engine

2014 ◽  
Vol 592-594 ◽  
pp. 1632-1637
Author(s):  
Ramalingam Senthil ◽  
C. Paramasivam ◽  
Rajendran Silambarasan
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Fuel Injection ◽  
Cetane Number ◽  
Load Condition ◽  
Injection Pressure ◽  
Emission Characteristics ◽  
Operational Parameters ◽  
Performance And Emission ◽  
Standard Design

Nerium methyl ester, an esterified biofuel, has an excellent cetane number and a reasonable calorific value. It closely resembles the behaviour of diesel. However, being a fuel of different origin, the standard design limits of a diesel engine is not suitable for Nerium methyl ester (NME). Therefore, in this work, a set of design and operational parameters are studied to find out the optimum performance of Nerium methyl ester run diesel engine. This work targets at finding the effects of the engine design parameter viz. fuel injection pressure (IP) on the performance with regard to specific fuel consumption (SFC), brake thermal efficiency (BTHE) and emissions of CO, CO2, HC, NOxwith N20 as fuel. Comparison of performance and emission was done for different values of injection pressure to find best possible condition for operating engine with NME. For small sized direct injection constant speed engines used for agricultural applications, the optimum injection pressure was found as 240bar.Methyl esters from Nerium, with properties close to diesel; show better performance and emission characteristics. Hence Nerium (N20) blend can be used in existing diesel engines without compromising the engine performance. Diesel (25%) thus saved will greatly help the interests of railways in meeting the demand for fuel,as diesel trains are operated at maximum load condition.

Evaluation of Fuel Injection Strategies for Biodiesel-Fueled CRDI Engine Development and Particulate Studies

2018 ◽  
Vol 140 (10) ◽  
Author(s):  
Akhilendra Pratap Singh ◽  
Avinash Kumar Agarwal
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Pressure Rise ◽  
Injection Pressure ◽  
Combustion Noise ◽  
Emission Characteristics ◽  
Biodiesel Blends ◽  
Performance And Emission ◽  
Injection Parameters ◽  
Smoke Opacity

Fuel injection parameters such as fuel injection pressure (FIP) and start of main injection (SoMI) timings significantly affect the performance and emission characteristics of a common rail direct injection (CRDI) diesel engine. In this study, a state-of-the-art single cylinder research engine was used to investigate the effects of fuel injection parameters on combustion, performance, emission characteristics, and particulates and their morphology. The experiments were carried out at three FIPs (400, 700, and 1000 bar) and four SoMI timings (4 deg, 6 deg, 8 deg, and 10 deg bTDC) for biodiesel blends [B20 (20% v/v biodiesel and 80% v/v diesel) and B40 (40% v/v biodiesel and 60% v/v diesel)] compared to baseline mineral diesel. The experiments were performed at a constant engine speed (1500 rpm), without pilot injection and exhaust gas recirculation (EGR). The experimental results showed that FIP and SoMI timings affected the in-cylinder pressure and the heat release rate (HRR), significantly. At higher FIPs, the biodiesel blends resulted in slightly higher rate of pressure rise (RoPR) and combustion noise compared to baseline mineral diesel. All the test fuels showed relatively shorter combustion duration at higher FIPs and advanced SoMI timings. The biodiesel blends showed slightly higher NOx and smoke opacity compared to baseline mineral diesel. Lower particulate number concentration at higher FIPs was observed for all the test fuels. However, biodiesel blends showed emission of relatively higher number of particulates compared to baseline mineral diesel. Significantly lower trace metals in the particulates emitted from biodiesel blend fueled engine was an important finding of this study. The particulate morphology showed relatively smaller number of primary particles in particulate clusters from biodiesel exhaust, which resulted in relatively lower toxicity, rendering biodiesel to be more environmentally benign.

Combustion Characteristics of Methane Direct Injection Engine Under Various Injection Timings and Injection Pressures

2017 ◽  
Vol 139 (8) ◽  
Author(s):  
Jingeun Song ◽  
Mingi Choi ◽  
Daesik Kim ◽  
Sungwook Park
Keyword(s):  
Fuel Injection ◽  
Direct Injection ◽  
Injection Pressure ◽  
Combustion Characteristics ◽  
Direct Injection Engine ◽  
Optical Engine ◽  
Start Of Injection ◽  
Crank Angle ◽  
Combustion Speed ◽  
Injection Pressures

The performance of a methane direct injection engine was investigated under various fuel injection timings and injection pressures. A single-cylinder optical engine was used to acquire in-cylinder pressure data and flame images. An outward-opening injector was installed at the center of the cylinder head. Experimental results showed that the combustion characteristics were strongly influenced by the end of injection (EOI) timing rather than the start of injection (SOI) timing. Late injection enhanced the combustion speed because the short duration between the end of injection and the spark-induced strong turbulence. The flame propagation speeds under various injection timings were directly compared using crank-angle-resolved sequential flame images. The injection pressure was not an important factor in the combustion; the three injection pressure cases of 0.5, 0.8, and 1.1 MPa yielded similar combustion trends. In the cases of late injection, the injection timings of which were near the intake valve closing (IVC) timing, the volumetric efficiency was higher (by 4%) than in the earlier injection cases. This result implies that the methane direct injection engine can achieve higher torque by means of the late injection strategy.

Effect of Injection System Parameters on Performance and Emission Characteristics of a Small Single Cylinder Diesel Engine

2021 ◽  
Vol 18 (2) ◽  
Author(s):  
D.K. Dond ◽  
N.P. Gulhane
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Direct Injection ◽  
Common Rail ◽  
Injection System ◽  
Injection Timing ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
System Parameters ◽  
Main Injection

Limited fossil fuel reservoir capacity and pollution caused by them is the big problem in front of researchers. In the present paper, an attempt was made to find a solution to the same. The conventional fuel injection system was retrofitted with a simple version of the common rail direct injection system for the small diesel engine. Further, the effect of injection system parameters was observed on the performance and emission characteristics of the retrofitted common rail direct injection diesel engine. The parameters such as injection pressure, the start of pilot injection timing, the start of main injection timing and quantity of percentage fuel injection during the pilot and main injection period were considered for experimental investigation. It was observed that all the evaluated parameters were found vital for improving the engine’s performance and emission characteristics. The retrofitted common rail direct injection system shows an average 7% rise in brake thermal efficiency with economic, specific fuel consumption. At the same time, much more reduction in hydrocarbon, carbon monoxide and smoke opacity with a penalty of a slight increase in nitrogen oxides.

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