Authors : Radhwan Ali, Nuraini Abdul Aziz and Abdul Aziz Hairuddin
Abstract: Towards the effort of reducing pollutant emissions, especially nitrogen oxides and smoke from diesel engine Direct Injection (DI), engineers have proposed various solutions one of this solutions are uses of the gaseous fuel as a limited addition for liquid diesel fuel. The utilization of alternative gas fuels like Liquefied Petroleum Gas (LPG), Natural Gas (NG), etc. is a promising approach in decreasing the dependence on petroleum-based liquid fuels and decreasing emission from a diesel engine. Therefore, using Liquefied Petroleum Gas (LPG) as an alternative fuel is an optimistic solution. The potential profits of using LPG in diesel engines are both economic and environmentally friendly. The high auto-ignition temperature of LPG is a serious principal since the compression ratio of normal diesel engines can be sustained. Therefore, the challenge currently faced is to reduce the exhaust emissions without making any major changes to their mechanical configuration of a diesel engine. Thus "LPG-diesel dual-fuel engines" are referred to the engines that utilize both LPG fuel and normal diesel fuel. LPG dual-fuel engines can be described as modifies diesel engines that utilize LPG as the primary fuel and diesel as the secondary fuel. At high output, the thermal efficiency of LPG dual-fuel engines is good; however, the performance is lower in part-time load conditions because of poor usage of charges. Therefore, studies show that the utilization of LPG with a diesel engine is among the most effective ways of reducing NO and PM emissions.
Radhwan Ali, Nuraini Abdul Aziz and Abdul Aziz Hairuddin, 2017. A Review of Effect the LPG Fuels Addition on the Emissions and Performance in Compression Ignition Engine. Journal of Engineering and Applied Sciences, 12: 2427-2436.