Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend

Sertaç Coşman

doi:10.64808/engineeringperspective.1839259

Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend

Abstract

This study investigates the combined effects of dichloromethane (DCM) and a benzoylthiourea-based additive (CPTC: N-((2-chloropyridin-3-yl) carbamothioyl) thiophene-2-carboxamide) on the performance and emission characteristics of a spark-ignition (SI) engine. Although DCM is a well-known oxygenated compound that can influence combustion-related behavior, its interaction with heterocyclic fuel additives has received limited attention in SI engine applications. To address this gap, fuel blends consisting of pure gasoline (G), gasoline with DCM (G+DCM), and G+DCM with CPTC at 50, 100, and 200 ppm concentrations were prepared and tested under varying engine loads. The experimental results showed that the addition of CPTC to the G+DCM blend enhanced brake thermal efficiency and reduced specific fuel consumption, with more pronounced effects observed at higher engine loads. Among the tested blends, G+DCM with 100 ppm CPTC provided a balanced improvement by reducing CO and HC emissions while maintaining manageable NOx levels. Increasing the CPTC concentration to 200 ppm shifted engine operation toward leaner mixture conditions, as indicated by lambda measurements, and further improved fuel economy and thermal efficiency, although this was accompanied by an increase in NOx emissions. The maximum reduction in specific fuel consumption (35.03%) was achieved with the 200 ppm CPTC blend at 75% load, while the highest increase in thermal efficiency (44.59%) occurred with the same blend at 25% load. Overall, this study demonstrates the potential of CPTC as a heterocyclic fuel additive for gasoline–DCM fuel systems and offers insights into the development of multifunctional fuel formulations aimed at improving engine performance, efficiency, and emission response in SI engines.

Keywords

References

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Details

Primary Language

English

Subjects

Automotive Combustion and Fuel Engineering

Journal Section

Research Article

Authors

Sertaç Coşman ^*
Türkiye

Publication Date

February 15, 2026

Submission Date

December 9, 2025

Acceptance Date

February 6, 2026

Published in Issue

Year 2026 Volume: 6 Number: 1

DOI

https://doi.org/10.64808/engineeringperspective.1839259

IZ

https://izlik.org/JA39PX38NG

Cite

RIS / Bibtex

APA

Coşman, S. (2026). Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend. Engineering Perspective, 6(1), 92-105. https://doi.org/10.64808/engineeringperspective.1839259

AMA

1.Coşman S. Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend. engineeringperspective. 2026;6(1):92-105. doi:10.64808/engineeringperspective.1839259

Chicago

Coşman, Sertaç. 2026. “Experimental Assessment of N-((2-Chloropyridin-3-Yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend”. Engineering Perspective 6 (1): 92-105. https://doi.org/10.64808/engineeringperspective.1839259.

EndNote

Coşman S (February 1, 2026) Experimental Assessment of N-(2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend. Engineering Perspective 6 1 92–105.

IEEE

[1]S. Coşman, “Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend”, engineeringperspective, vol. 6, no. 1, pp. 92–105, Feb. 2026, doi: 10.64808/engineeringperspective.1839259.

ISNAD

Coşman, Sertaç. “Experimental Assessment of N-((2-Chloropyridin-3-Yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend”. Engineering Perspective 6/1 (February 1, 2026): 92-105. https://doi.org/10.64808/engineeringperspective.1839259.

JAMA

1.Coşman S. Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend. engineeringperspective. 2026;6:92–105.

MLA

Coşman, Sertaç. “Experimental Assessment of N-((2-Chloropyridin-3-Yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend”. Engineering Perspective, vol. 6, no. 1, Feb. 2026, pp. 92-105, doi:10.64808/engineeringperspective.1839259.

Vancouver

1.Sertaç Coşman. Experimental Assessment of N-((2-Chloropyridin-3-yl) Carbamothioyl) Thiophene-2-Carboxamide in a Spark-Ignition Engine Operating on Dichloromethane – Gasoline Blend. engineeringperspective. 2026 Feb. 1;6(1):92-105. doi:10.64808/engineeringperspective.1839259

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