Experimental investigation on the effect of compression ratio over emission and performance characteristics of the diesel engine using ternary blends

ABSTRACT

A study of the existing literature on the effects of diethyl ether with different biodiesels such as Fish, Neem, Calophyllum Inophyllum, Cottonseed, and Soybean biodiesel was undertaken. Till date, no study related to the combined effects of repurpose used cooking oil biodiesel/diethyl ether/diesel blends and different compression ratios with different loading conditions has been reported in the literature. Moreover, the current study reveals that there are some major flaws in the existing scenario such as no reduction in harmful exhaust gases such as carbon dioxide, hydrocarbon, carbon monoxide, and nitrogen oxide. There is no noticeable improvement in the performance characteristics such as brake thermal efficiency and brake specific fuel consumption. This investigation has been carried out for controlling harmful emissions and improving the performance of the engine. The present study investigates the combined impact of compression ratios on emission and performance characteristics of a diesel engine using ternary blends in comparison with diesel. This study provides eco-friendly working conditions that result in fewer emissions with improved performance. The results show that a higher compression ratio is useful for minimizing nitrogen oxide emission, while a lower compression ratio is useful for minimizing carbon monoxide emission. CR16 works effectively with a higher proportion of diethyl ether (2.4 and 3.2%) and provides better results for minimizing emissions with improved performance. The following eco-friendly blends delivered lower emissions with improved performance. These blends are: A0.8_B19.2: CR16 and CR15; A1.6_B18.4: CR17 and CR16; A2.4_B17.6: CR16, CR15, and CR14; A3.2_B16.8: CR16 and CR15.

KEYWORDS:

• RUCO biodiesel
• diethyl ether
• diesel
• compression ratio
• ecofriendly working conditions

Nomenclature

Repurpose Used Cooking Oil: RUCO

RUCO Biodiesel: RUCOB

Potassium Hydroxide: KOH

Diethyl Ether: DEE

Compression Ratio: CR

Brake Thermal Efficiency: BTE

Brake Specific Fuel Combustion: BSFC

Carbon Monoxide Emission: CO

Carbon Dioxide Emissions: CO₂

Oxides of Nitrogen Emissions: NOx

Unburned Hydrocarbon: HC

Acknowledgments

The authors would like to acknowledge the Sophisticated Analytical Instrument Facility (SAIF), IIT Bombay, Mumbai-400076, Maharashtra, India; SKN Sinhgad College of Engineering, Pandharpur-413304, Maharashtra, India for providing facilities to conduct experiments.

Disclosure statement

The authors declare that there is no conflict of interest regarding the publication of this paper.

Financial and Ethical disclosures

This work is not supported fully or partially by any funding organization or agency.