Impact assessment of acetylene fueling on the performance, emissions, and combustion of a spark-ignition engine

ABSTRACT

Along with industrialization and transportation, the higher living standard is also the main reason for the increase in energy demand. This increasing energy demand motivates researchers to find new alternative fuels that are eco-friendly and sustainable. In this concern, to analyze the performance, emissions, and combustion characteristics of an SI engine fueled by petrol-acetylene under DF mode is the main purpose of this study. For this purpose, a VCR spark ignition engine was used and operated at the engine maximum speed (1800 rpm). The experimental study was carried out at different acetylene gas flow rates and spark timing.

In this study, the acetylene gas flow rate was first optimized on a performance basis. Furthermore, the engine was run at an optimized acetylene gas flow rate (100 LPH) to find out the optimum value of spark timing. In further experimentation, it is also found that the BThE to be maximum and emissions were significantly low or comparable at spark timing 20º CA bTDC (at 100 LPH) as compared to other spark timing and baseline case at all loads. The effects of NO_x and smoke are not considerable. Hence, it is not covered in this study. The heat release rate and peak cylinder pressure are found to increase with the advancement of spark timing. But knocking was observed at higher spark advance.

KEYWORDS:

• Acetylene
• dual-fuel engine
• emissions and combustion
• performance
• spark-ignition engine
• sparks timing

Acknowledgments

The authors wish to express thanks to Mr. Ramesh Kumar Meena (Mechanical Engineering Department, MNIT Jaipur), Dharmendra, and Abhishek Sharma for their great support during the experimentations.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Sumit Sharma

Sumit sharma, the researcher in Mechanical engineering department of Malaviya National Institute of Technology Jaipur, Rajasthan, India.

Dilip Sharma

Dilip sharma is a professor in Mechanical Engineering department in Malaviya National Institute of Technology Jaipur, Rajasthan, India.

Digambar Singh

Digambar singh, the researcher in Mechanical engineering department of Malaviya National Institute of Technology Jaipur, Rajasthan, India.

Pushpendra Kumar Sharma

Pushpendra Sharma, the researcher in Mechanical engineering department of Malaviya National Institute of Technology Jaipur, Rajasthan, India.