Experimental Investigations on Modified Combustion Chamber Geometry in Diesel Engine
ShaikHussain1, Sanam Ravi Teja2

1ShaikHussain, Associate Professor, Department of Mechanical Engineering, Malla Reddy Engineering College, Hyderabad (Telangana), India.
2Sanam Ravi Teja, PG Student, Department of Mechanical Engineering, Malla Reddy Engineering College, Hyderabad (Telangana), India.
Manuscript received on 09 February 2019 | Revised Manuscript received on 22 February 2019 | Manuscript Published on 04 March 2019 | PP: 507-511 | Volume-7 Issue-5S2 January 2019 | Retrieval Number: ES2092017519/19©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© 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: Today the two disturbing conditions in front of the engineers worldwide are to decrease the utilization of conventional fuels and to downscale the ever rising environmental pollution. The performance characteristics and emission characteristics of single cylinder water cooled diesel engine with the effect of piston crown geometries such as HCC (Hemispherical combustion chamber) and RCC (Re-entrant combustion chamber) are evaluated. The tests are conducted with diesel and Rice Bran Methyl Ester and Diesel blends as fuels with different loading conditions. Rice bran methyl ester is prepared by using transesterification process. Without modifying the compression ratio and cylindrical volume of the engine the baseline hemispherical type piston is replaced with Re-entrant type piston. All the engine tests were conducted with diesel and 20% blend with diesel [RBOME20] indiesel engine with HCC and RCC. From the investigations it is observed that the brake point thermal efficiency is increased and specific fuel consumption proportion is decreased for re-entrant combustion chamber. Further thenormal pollutants emissions are reduced. But slightly increase in nitrogen oxides is detected compared to base fuel for re-entrant combustion.
Keywords: Diesel Engine, Biodiesel, Re-entrant Combustion Chamber, Hemispherical Combustion Chamber and Rice Bran Methyl Ester.
Scope of the Article: Biomechanics