Effects of CNG Injection Pressure on Performance, Emission and Combustion Characteristics of Multi-cylinder SI Engine
Pravin T. Nitnaware1, Nakul N. Bhange2, Premendra J. Bansod3, Manoj D. Hambarde4, Sanjay R. Deodas5

1*Dr. P. T. Nitnaware Associate Professor, Department of Mechanical Engineering, D. Y. Patil College of Engineering Akurdi, Pune, Maharashtra 411044.
2Nakul N Bhange, P.G Scholar, D. Y. Patil College of Engineering Akurdi, Pune, Maharashtra 411044.
3Dr. Premendra J Bansod Associate Professor, Department of Mechanical Engineering, G H Raisoni College of Engg. & Management Wagholi Pune
4Dr. Manoj D Hambarde Astt. Professor Affiliation- School of Mechanical Engineering, Dr. Viswanath Karad MIT World Peace University, Pune-38.
5Sanjay R Deodas Assistant Professor Department of Mechanical Engineering, D. Y. Patil College of Engineering Akurdi, Pune, Maharashtra 411044. 

Manuscript received on 1 August 2019. | Revised Manuscript received on 8 August 2019. | Manuscript published on 30 September 2019. | PP: 2383-2387 | Volume-8 Issue-3 September 2019 | Retrieval Number: C4662098319/2019©BEIESP | DOI: 10.35940/ijrte.C4662.098319
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This Paper shows the effect of port fuel injection pressure of CNG in 3-cylinder SI Engine at Wide Open Throttle position using sequential port fuel injection system. All trials are performed on 4-stroke, 796 cc MPFI S.I engine at injection pressure of 2.0, 2.2, 2.4, 2.6, 2.8 bar for constant speed of 2500, 3000, 3500, 4000 & 4500 rpm. During the trial compression ratio is kept constant at 9.2 with Maximum Brake Torque (MBT) spark timing of 15oBTDC. Optimum torque is obtained for CNG at injection pressure of 2.6 bar and 3000 rpm. Gasoline trials are performed at same compression ratio for comparison with CNG at same injection pressure. Performance and emission characteristics with combustion analysis are performed at optimum injection pressure of 2.6 bar.
Keywords: CNG, Injection Pressure, PFI, Bsfc, Gasoline, HRR, Brake Specific Fuel Consumption, Brake Power

Scope of the Article:
High Performance Computing