| Issue |
E3S Web Conf.
Volume 327, 2021
26th Scientific Conference on Power Engineering and Power Machines (PEPM’2021)
|
|
|---|---|---|
| Article Number | 02009 | |
| Number of page(s) | 6 | |
| Section | Renewable Energy and Environmental Protection | |
| DOI | https://doi.org/10.1051/e3sconf/202132702009 | |
| Published online | 22 November 2021 | |
Determination of the optimal air-fuel ratio for upgraded biogas engine operation
1 Technical University of Varna, Department Transport Engineering and Technologies, 1 Studentska Str., 9010 Varna, Bulgaria
2 Technical University of Varna, Department of Thermal Engineering, 1 Studentska Str., 9010 Varna, Bulgaria
* Corresponding author: r_dimitrov@tu-varna.bg
The paper reveals a study about air-fuel ratio variation of spark-ignition engine running on upgraded biogas (biomethane). Using biogas as internal combustion engine fuel and external mixture formation is a new approach to decrease harmful exhaust gas emissions. Тo obtain minimum concentrations of exhaust gases harmful emissions the engine must work with optimal air-fuel ratio. This research contains analysis of many test engine adjusting characteristics to determine optimal air-fuel ratio for each working regime and to obtain maximum effective working process by the use of biomethane as a fuel. Three-dimensional graphics of air-fuel ratio variation across the rpm and load range were made. In conclusion based on performed experiments, a table with values of air-fuel ratio for all engine operating modes and dependence on rpm and load of the engine is proposed.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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