Experimental concerning the influence upon gaseous emissions by using HHO addition to an LPG powered Otto engine

Abstract Because of the increased pollution regulations imposed on internal combustion engines across the world as well to preserve the air quality, effective solutions for new and older cars must be found in reference to their emission levels. This paper focuses on the impact of adding oxyhydrogen (HHO) fueled into an Otto engine working with liquefied petroleum gas (LPG), in reference to the emission concentration values. HHO is produced using a water electrolytic conversion technique that works in tandem with the Otto engine. The electrolytic convertor can generate 1,800 litters of HHO gas from 1 liter of water. Due to this addition, the total calorific power of the fuel mixture is growing by around 30 % in comparison to only LPG fueled situation, considered as basic one. All measurements were conducted in a laboratory with accredited and approved gas analyzers and measuring devices. The study presents comparative results of the basic measurements, at an engine speed of 800 rotations per minute (RPM) and respectively at 2,000 RPM, when using an LPG as fuel, respectively a mixture LPG and HHO. As conclusion, one proves that the addition of HHO can generate as effect the decreased of particular emission values.