International Journal of Mechanical Engineering and Technology (IJMET) Volume 9, Issue 11, November 2018, pp. 599 603, Article ID: IJMET_09_11_059 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=11 ISSN Print: 0976-6340 and ISSN Online: 0976-6359 IAEME Publication Scopus Indexed A STUDY ON DIESEL ENGINE PERFORMANCE DEPENDS ON BP AND BSFC BY APPLYING DIFFERENT INJECTION PRESSURE Killedar Prashant Ashok Research Scholar, Department of Mechanical Engineering, Bharath Institute of Higher Education and Research, Chennai, India Dr. R. Venkatesh Babu Dean - Academics, Bharath Institute of Higher Education and Research, Chennai, India Dr. V. Balambica Associate Professor, Department of Mechanical Engineering, Bharath Institute of Higher Education and Research, Chennai, India ABSTRACT The compression ignition (diesel) engine is also called as an internal combustion engine. This engine is utilized for heavy-duty vehicles due to its power like high torque, economic output. The usage of compression ignition engines has increased in the last few years because of their high economic and efficiency. The operation of the diesel engine is distressed by many parameters. One of the accentuated parameters like Fuel Injection Pressure (FIP) affect the execution of Compression Ignition (CI) Engine. It is varying the functioning of Brake Power (BP), Brake Specific Fuel Consumption (BSFC), parameters also differ. In, this research paper aims the several types of research on diesel engine performance and production of the compression ignition engine. Key words: Brake Power, Compression Ignition Engine, Fuel Injection Pressure, Diesel Engine, Brake Thermal Efficiency. Cite this Article: Killedar Prashant Ashok, Dr. R. Venkatesh Babu and Dr. V. Balambica, A Study on Diesel Engine Performance Depends on BP and BSFC by Applying Different Injection Pressure, International Journal of Mechanical Engineering and Technology 9(11), 2018, pp. 599 603. http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=9&itype=11 http://www.iaeme.com/ijmet/index.asp 599 editor@iaeme.com
Killedar Prashant Ashok, Dr. R. Venkatesh Babu and Dr. V. Balambica 1. INTRODUCTION In this section we focus the overview about the performance and emanation of a diesel engine by applying different injection pressure. There are many factors which affect the performance of diesel engine. Fuel Injection Pressure is one of the most important factor which influences the performance. A lot of research on the fuel injection systems has being carried out [1]. In present diesel engines, fuel injection systems are intended to attain higher injection pressure. So, it is aimed to decrease the exhaust emissions by increasing efficiency of diesel engines[2]. A long-drawn-out research is required in advanced injection strategies in order to increase the engine operation and to reduce the emanations from the diesel engine [3,4]. By injecting fuel into the compressed air mixture [3, 4, 5] will ignite the diesel engine By sustaining the FIP we can maintain the functioning of engine. The fuel droplets from the fuel injector will be in larger size when FIP is less. So during combustion, ignition delay period will increase and it will decrease the possibility of complete combustion. Therefore ignition delay period during combustion will increase and possibility of complete combustion decreases there by increasing the chance of producing harmful emissions and also the engine performance will decrease[6,7]. If the FIP is increased the fuel will be sprayed as small atoms of fuel into the chamber, therefore the chance of mixing fuel with air increases during the ignition delay period and by this the engine performance also increases[8,9]. If the FIP is further increased, ignition delay period decreases, chances of homogeneous mixing reduces [10,11] and combustion efficiency decreases. The optimum FIP is found by conducting this experiment on four stroke CI engine at three different FIP values. Figure 1 Ontology of Diesel Engine In this paper, section 1 presents the introduction about the performance and emanation of a diesel engine by applying different injection pressure, Section 2 presents the materials and methods of this research review, in section 3 presents the results and discussions of the various researchers work, section 4 presents the conclusion of this research review. http://www.iaeme.com/ijmet/index.asp 600 editor@iaeme.com
A Study on Diesel Engine Performance Depends on BP and BSFC by Applying Different Injection Pressure 2. MATERIALS AND METHODS In this section focuses the materials and methods of the various researchers work. In this experiment is an water cooled four stroke single cylinder diesel engine having 5kW as rated power at 1200 rp. The setup is equipped with the cylinder pressure sensor, thermocouples, air and gas. The experiment has carried out on the engine by changing the fuel injection pressure at 150N/m 2, 170N/ m 2 and 190 N/m 2 to calculate the performance parameters. The specifications of the engine are given in the Table 1. Table 1 Experimental specifications S.No Component Specifications 1 Type of the engine 4 Stroke, Single Cylinder, Water cooled Engine 2 Bore 80mm 3 Stroke 110mm 4 Compression ratio 18:1 5 Fuel Injection Pressure(FIP) 200 N/m 2 6 Fuel Injection Timing(FIT) 20 o BTDC 7 Specific Fuel Consumption(SFC) 0.261 kg/kwh 8 Dynamometer Eddy Current 9 BHP 5kW 10 Rpm 1200 3. RESULTS AND DISCUSSIONS In this section focuses the results and discussions of the various researchers work. The experiment is conducted on a 4 stroke single cylinder diesel engine and the obtained results are tabulated below: 3.1. Fuel Injection Pressure The experiment is conducted to assess the performance of the engine by varying the FIP from 150 N/m 2 to 190N/m 2. Two values of the FIP are considered and the values of BSFC and BP are obtained from the experiment shown as follows: Table 2 FIP at 150 N/m 2 1 1.7 0.79 2 2.4 0.53 3 2.9 0.41 4 3.9 0.26 5 4.1 0.27 Table 3 FIP at 170 N/m 2 2 2.39 0.5 3 3 0.39 4 3.5 0.29 5 4.3 0.23 http://www.iaeme.com/ijmet/index.asp 601 editor@iaeme.com
BSFC Killedar Prashant Ashok, Dr. R. Venkatesh Babu and Dr. V. Balambica Table 3 FIP at 190 N/m 2 1 1.6 0.61 2 2.5 0.49 3 2.6 0.35 4 3.7 0.27 5 4.2 0.24 3.2. Brake Specific Fuel Consumption The BSFC decreases as the load increases. When the FIP is 150N/m 2 and 170N/m 2, as the load is increasing from0ampere to 25 Ampere the BSFC has decreased. Whereas when the FIP is 190N/m 2 as the load increased, the BSFC has increased. From the results obtained in the tables 2, 3, and 4 the BSFC is minimum when the FIP is 170 N/m 2 and is 0.23[kg/kWh] at 25 Ampere load. The maximum BSFC of 0.79 [kg/kwh] is found at 25 Ampere load and at FIP 179 N/m 2. The variation BSFC with the load at different FIP conditions is shown in the Figure 2: 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 4 5 Brake Power FIP=150 N/m2 FIP=170 N/m2 FIP=190 N/m2 Figure 2 BSFC Vs BP for different FIP values The above fig.2 shows that the BSFC is decreasing with increase in load and FIP value. The lowest value of BSFC for the engine is obtained at FIP of 170 N/m 2 and at a load of 25A and the value is found to be 0.23[(kg/kWh]. 4. CONCLUSIONS In this research work can be applied different the fuel injection pressure in the diesel engine. While increase in the Fuel Injection Pressure leads to decrease in BSFC. In this experiment 170 N/m 2 is found to be optimum Fuel Injection Pressure. In this experiment170 N/m 2 is found to be optimum Fuel Injection Pressure. So this work recommended to apply 170 N/m 2 is the best model compare than other two levels of fuel injection pressure of 150 N/m 2 and 190 N/m 2 models. http://www.iaeme.com/ijmet/index.asp 602 editor@iaeme.com
A Study on Diesel Engine Performance Depends on BP and BSFC by Applying Different Injection Pressure REFERENCES [1] Celikten, Ismet, An experimental investigation of the effect of the injection pressure on engine performance and exhaust emission in indirect injection diesel engines, Applied Thermal Engineering 23, pp: 2051 2060, 2003. [2] Giménez,B, Tinaut, F, Melgar, A, Payri R, Effects of the Operating Variables and Atomization Parameters on Diesel Spray Characteristics by Means of a Transient Evaporative Spray Atomization Model, SAE Technical Paper, 2004-01-2013, 2004. [3] Kowalewicz, Andrzej, Combustion System of High-Speed Piston I.C. Engines, Wydawnictwa Komunikacjii Lacznosci, Warszawa, 1984. [4] Stone. Richard, Introduction to Internal Combustion Engines-Second Edition, SAE Inc., USA, 1997. [5] Bakar, Rosli. Abu., Semin., Ismail, Abdul. Rahim, The internal combustion engine diversification technology and fuel research for the future: A Review, Proceeding of AEESEAP Regional Symposium on Engineering Education, Kuala Lumpur, Malaysia, 2007. [6] P. Bridjesh, G. Arun Kumar, Study on the effects of variation of fuel injection pressure on single cylinder diesel engine, APRN Journal of Engineering and Applied Sciences. pp:218-221, 2015. [7] N.Prabhu Kishore,N.Alekhya, P.Bridijesh, Experimental Investigation by Varying Fuel Injection Pressure on CI Engine, ICAAMM-2016,Materials Today:proceedings,4(2017),8394-8399,Elsevier Ltd. [8] Moneym A and J.H. Gerpen, The effect of bio-diesel production on engine performance and emissions. Journal of Biomass and Bio energy. 20: 2001, pp. 317-325. [9] Akasaka Y., Suzuki T. and Y. Sakurai. 1997. Exhaust emissions of a DI diesel engine fueled with blends of bio-diesel and low sulphur diesel fuel. SAE Paper No. 972998. [10] Owen K. and T. Coley. 1995. Automotive fuels reference book. Society of Automotive Engineers, USA. http://www.iaeme.com/ijmet/index.asp 603 editor@iaeme.com