Abstract
In the current time, sustainability and development of internal combustion engines is subjected to two kinds of threats which are fossil fuel depletion and environmental pollution. So, considerable efforts in the world have been exerted to develop and introduce alternative gaseous fuels to replace conventional fuel by partial or total replacement. In this study, the effect of adding acetylene to LPG-fuelled SI engine has been examined. This addition was with flow rates of 500, 750 and 1000 g/h for 25 % load and 1000 g/h for 50 % load, respectively. An experimental investigation has been carried out on 4 stroke, 4- cylinder, water-cooled spark ignition (SI) engine at constant speed (1500 rpm). Also, performance and emissions parameters have been tested at different excess air coefficients (λ = 0.8, 1, 1.2 and 1.7). As a result, it has been found optimum conditions which are the addition of 750 g/h acetylene for 25 % load (almost 41 % of the LPG-acetylene mixture at λ = 1.2) and 1000 g/h for 50 % load (almost 36 % of the LPG-acetylene mixture at λ = 1.5). In addition, hydrocarbon (HC) and carbon monoxide (CO) emissions decreased, while NO emissions increased when compared to that of baseline LPG operation.
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Abbreviations
- CA:
-
Crank angle (degree)
- ATDC:
-
After top dead center (CA)
- BSFC:
-
Brake specific fuel consumption (g/kWh)
- BTDC:
-
Before top dead center (CA)
- BTE:
-
Brake thermal efficiency (%)
- CD:
-
Combustion duration (milisecond)
- CO:
-
Carbon monoxide
- CO2 :
-
Carbon dioxide
- EGR:
-
Exhaust gas recirculation
- HC:
-
Hydrocarbon
- NO:
-
Nitrogen monoxide
- SI:
-
Spark ignition
- SA:
-
Spark advance
- λ :
-
Lambda (Excess Air Ratio)
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Acknowledgement
The authors would like to acknowledge Erciyes University for the Scientific Research Projects Unit of Erciyes University, Turkey, for the financial support under the grant number FLY-2017-7745.
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Cinar, G., Eldamanhory, A., Akansu, S.O. et al. Experimental Study on an Si Engine Fuelled by LPG/Acetylene Mixtures. Int.J Automot. Technol. 21, 1323–1331 (2020). https://doi.org/10.1007/s12239-020-0125-5
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DOI: https://doi.org/10.1007/s12239-020-0125-5