Comparison of Performance Characteristics of LPG and Gasoline - Fuelled Single Cylinder SI Engine

• Main Author: Saad Abdul Qadir Abdul Azeez
• Format: Article
• Language: English
• Published: Tikrit University 2016-07-01
• Series: Tikrit Journal of Engineering Sciences
• Subjects: LPG, Spark ignition engines, Performance, Brake power, Volumatric efficiency, Brake thermal efficiency.
• Online Access: http://www.tj-es.com/ojs/index.php/tjes/article/view/555

The investigations have been concentrated on decreasing fuel consumption by using alternative fuels and on lowering the concentration of toxic  components in combustion products. LPG as an alternative to gasoline  has  emerged  as  a  solution  to  the  deteriorating  urban  air  quality  problem,  especially  in  an  oil country like Iraq. LPG has already been used as cooking fuel in Iraq. In the present paper  practical tests of various operating parameters and concerns have been prepared for better understanding of operating conditions and constrains for a LPG fueled internal combustion engine.The results show that HUCR for gasoline was 8:1, and for LPG was 10:1. bsfc reduced by using LPG at its HUCR, while at CR=8:1 it became higher than that for gasoline. Volumetric efficiency reduced by using  LPG  due  to  its  gaseous  nature,  but  it  was  improved  when  the  engine  was  run  at  HUCR.  Brake thermal efficiency depends  on bsfc and bp, so LPG preceded gasoline at medium speeds and torques. Exhaust gas temperatures reduced by using LPG, the minimum values were when the engine operated at CR= 8:1. The maximum values were for gasoline share.