Title: Green transportation: increasing fuel consumption efficiency through HHO gas injection in diesel vehicles

Authors: Ammar A. Al-Rousan; Sharaf Alkheder; Sa'ed A. Musmar; Mohammed Awwad Al-Dabbas

Addresses: Department of Industrial Engineering, Hijjawi Faculty for Engineering Technology, Yarmouk University, P.O. Box 566, Irbid 21163, Jordan ' Department of Civil Engineering, Hijjawi Faculty for Engineering Technology, Yarmouk University, P.O. Box 566, Irbid 21163, Jordan ' Department of Industrial Engineering, Faculty of Engineering and Technology, The University of Jordan, P.O. Box 11942, Amman, Jordan ' Department of Mechanical Engineering, Faculty of Engineering, Mutah University, Mutah, Al-Karak 61710, Jordan

Abstract: Oxy-hydrogen (HHO) is a non-toxic gas that is used as a supplement to any engine working on petrol, diesel, heavy oil, acetylene, propane, kerosene, or LPG. Through adding HHO to the air intake manifold engine and injection into the cylinders, where HHO mixes with fuel, an increase in mileage of engine performance; enhancement of hydrocarbon fuel combustion; lower emission rates and an increase in fuel efficiency are observed. HHO gas is produced through the electrolysis process of different electrolytes (hydrogen generator). This study examines the effect of HHO gas that was directly injected into a single cylinder diesel engine, on the manifold intake air at varying operating speeds of 1,500-3,000 rpm in diesel engine. The experiments demonstrated positive results including (13.87-15.48%) fuel consumption reduction, lower exhaust temperature, and consequently a reduction in pollution. Furthermore, results indicated that the injection of HHO improved the combustion efficiency and increased the brake thermal efficiency by an average of approximately 17.1%.

Keywords: direct injection; diesel; HHO gas; brake thermal efficiency; specific fuel consumption.

DOI: 10.1504/IJGW.2018.090401

International Journal of Global Warming, 2018 Vol.14 No.3, pp.372 - 384

Received: 29 Oct 2015
Accepted: 14 Oct 2016
Published online: 14 Mar 2018 *

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