Title: Calibration of single cylinder four stroke computer control engine by changing inlet manifold dimensions with bio-based tri-fuel

Authors: Idiris Mehamud; Bandi Ramanjulu

Addresses: Department of Mechanical Design and Manufacturing Engineering, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia ' Department of Mechanical Engineering, College of Engineering and Technology, Wolkite University, P.O. Box 07, Wolkite, Ethiopia

Abstract: This paper describes an experimental investigation of the performance variations and emissions of the single cylinders of internal thread-intake port diesel engines under both steady-state and motored engine conditions using bio-based tri-fuels. The tri-fuel is assortment of diesel, turpentine blend and acetylene gas. The acetylene gas is produced from lime stone (CACO₃) and the turpentine oil obtained from pine tree. The intension of the swirl is done by creating threads internally in order to create the turbulence by swirl. The performance of tri-fuel has been analysed experimentally single cylinder direct injection and compression ignition engine with diesel and turpentine blend as primary fuel and acetylene inducted as secondary gaseous fuel, i.e., diesel and the turpentine (40% turpentine and 60% diesel). The results showed that the blend and the acetylene gas flow rate of 3 litre/minute offered higher brake thermal efficiency between 1% and 3% than that of diesel base line operation.

Keywords: diesel engines; air swirl; biofuels; tri-fuels; turpentine blend; acetylene gas; internal threads; brake thermal efficiency; engine emissions; simulation; combustion; swirl turbulence; turpentine; calibration; single cylinder engines; four stroke engines; engine control; inlet manifold dimensions; limestone; calcium carbonate; CaCO3; pine trees.

DOI: 10.1504/IJAD.2016.083380

International Journal of Aerodynamics, 2016 Vol.5 No.3/4, pp.194 - 201

Received: 25 May 2016
Accepted: 03 Jan 2017
Published online: 24 Mar 2017 *

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