A numerical study to improve the position and angle of the producer gas injector inside the intake manifold to minimize emissions and efficiency enhancement of a bi engine

Keywords: mixture homogeneity, gas injector orientation, producer gas, computational fluid dynamics, environment

Abstract

To develop a petrol engine so that it works under the bi-engine pattern (producer gas-petrol) without any additional engine modifications, a single-point injection method inside the intake manifold is a simple and inexpensive method. Still, it leads to poor mixing performance between the air and producer gas. This deficiency can cause unsatisfactory engine performance and high exhaust emissions. In order to improve the mixing inside the intake manifold, nine separate cases were modelled to evaluate the impact of the position and angle orientation inside the intake manifold on the uniformity and spread of the mixture under AFR=2.07. A petrol engine (1.6 L), the maximum engine speed (8000 rpm), and bi-engine mode (petrol-producer gas engine). The employ of the numerical simulation software (ANSYS workbench 19), the propagation, flow characteristics, and uniformity of the blend within the nine different cases were evaluated. According to the outcomes of the numerical simulation, it was found that creating vortices and turbulent flow for the producer gas and air inside the intake manifold is the perfect method to obtain a uniformity mixture of air and producer gas inside the intake manifold. In addition, extending the blending duration allows air and producer gas fuel to be mixed efficiently. Furthermore, the greatest uniformity and the maximum spread rate at the outlet of manifold are obtained in cases 1, 4, and 7, when the producer gas injector location is constant (P1, P2 or P3). In addition, the weakest spread of producer gas at the outlet of the manifold is observed in case 9 in comparison with the other cases. Moreover, it is observed that case (1) generated the maximum uniformity index (UI) level

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Author Biographies

Hussein A. Mahmood, University of Baghdad

Department of Reconstruction and Projects

Ali O. Al-Sulttani, University of Baghdad

Department of Water Resources Engineering

College of Engineering

Osam H. Attia, University of Baghdad

Department of Reconstruction and Projects

Nor Mariah. Adam, Universiti Putra Malaysia Bintulu Sarawak Campus

Department of Science and Technology

References

Alhamdany, A. A., Hameed, A. Q., Salman, Q. M. (2018). Experimental Investigation for the Removal of Toxic Gases from Vehicle Exhaust using Non-Thermal Plasma. Journal of Engineering, 24 (8), 55. doi: https://doi.org/10.31026/j.eng.2018.08.05

Ali, A. A. M. M., Ali, K., Kim, C., Lee, Y., Oh, S., Kim, K. (2019). Numerical Study of the Combustion Characteristics in a Syngas-diesel Dual-fuel Engine under Lean Condition. International Journal of Automotive Technology, 20 (5), 933–942. doi: https://doi.org/10.1007/s12239-019-0087-7

Pichayapat, K., Sukchai, S., Thongsan, S., Pongtornkulpanich, A. (2014). Emission characteristics of using HCNG in the internal combustion engine with minimum pilot diesel injection for greater fuel economy. International Journal of Hydrogen Energy, 39 (23), 12182–12186. doi: https://doi.org/10.1016/j.ijhydene.2014.06.004

Karagöz, Y., Güler, İ., Sandalcı, T., Yüksek, L., Dalkılıç, A. S., Wongwises, S. (2016). Effects of hydrogen and methane addition on combustion characteristics, emissions, and performance of a CI engine. International Journal of Hydrogen Energy, 41 (2), 1313–1325. doi: https://doi.org/10.1016/j.ijhydene.2015.11.112

Vinay, S., Ravi, S., Prema Kumar, G., Rajan, N. (2008). Numerical and experimental modeling of producer gas carburettor. Proc. of the International Conference on Advances in Mechanical Engineering.

Suryawanshi, S., Yarasu, R. (2014). Design and Simulation of a Producer Gas Carburetor – A Review. International Journal of Current Engineering and Technology, 3, 10–13. Available at: http://inpressco.com/wp-content/uploads/2014/04/Paper310-13.pdf

Feng, S. (2017). Numerical Study of the Performance and Emission of a Diesel-Syngas Dual Fuel Engine. Mathematical Problems in Engineering, 2017, 1–12. doi: https://doi.org/10.1155/2017/6825079

Dzombo, D., Kiplimo, R., Kiplagat, J. (2014). Use of Biomass Gas in Running Internal Combustion Engine to Generate Electricity-A Review. Proceedings of 2013 Mechanical Engineering Conference on Sustainable Research and Innovation, 5, 89–95. Available at: https://ir-library.ku.ac.ke/bitstream/handle/123456789/15469/Use%20of%20Biomass%20Gas%20in%20Running%20Internal.pdf?isAllowed=y&sequence=1

Biradar, S., Ebinezar, R. R. (2013). Validation of Producer Gas Carburetor Using CFD. International Journal of Latest Research in Science and Technology, 2 (6), 90–94. Available at: https://www.mnkjournals.com/journal/ijlrst/pdf/Volume_2_6_2013/10236.pdf

Azimov, U., Okuno, M., Tsuboi, K., Kawahara, N., Tomita, E. (2011). Multidimensional CFD simulation of syngas combustion in a micro-pilot-ignited dual-fuel engine using a constructed chemical kinetics mechanism. International Journal of Hydrogen Energy, 36 (21), 13793–13807. doi: https://doi.org/10.1016/j.ijhydene.2011.07.140

Mahmood, H. A., Adam, N. M., Sahari, B. B., Masuri, S. U. (2016). Investigation on the Air-Gas Characteristics of Air-Gas Mixer Designed for Bi-Engines. International Journal of Applied Engineering Research, 11 (12), 7786–7794. Available at: https://www.researchgate.net/profile/Hussein-Mahmood-4/publication/309072869_Investigation_on_the_air-gas_characteristics_of_air-gas_mixer_designed_for_bi-engines/links/5e7f8506299bf1a91b86624b/Investigation-on-the-air-gas-characteristics-of-air-gas-mixer-designed-for-bi-engines.pdf

Gorjibandpy, M., Sangsereki, M. K. (2010). Computational investigation of air-gas venturi mixer for powered bi-fuel diesel engine. World Academy of Science, Engineering and Technology, 4 (11), 1197–1201. Available at: https://publications.waset.org/1578/computational-investigation-of-air-gas-venturi-mixer-for-powered-bi-fuel-diesel-engine

Danardono, D., Kim, K.-S., Lee, S.-Y., Lee, J.-H. (2011). Optimization the design of venturi gas mixer for syngas engine using three-dimensional CFD modeling. Journal of Mechanical Science and Technology, 25 (9), 2285–2296. doi: https://doi.org/10.1007/s12206-011-0612-8

Mahmood, H. A., Mariah Adam, N., Sahari, B. B., Masuri, S. U., Ahmed, H. E. (2019). An Investigation of Air-Gas Mixer Types Designed for Dual Fuel Engines: Review. Journal of Engineering and Applied Sciences, 14 (4), 1014–1033. doi: https://doi.org/10.36478/jeasci.2019.1014.1033

Mahmood, H. A., Mariah. Adam, N., Sahari, B. B., Masuri, S. U. (2018). Development of a particle swarm optimisation model for estimating the homogeneity of a mixture inside a newly designed CNG-H2-AIR mixer for a dual fuel engine: An experimental and theoretic study. Fuel, 217, 131–150. doi: https://doi.org/10.1016/j.fuel.2017.12.066

Chintala, V., Subramanian, K. A. (2013). A CFD (computational fluid dynamics) study for optimization of gas injector orientation for performance improvement of a dual-fuel diesel engine. Energy, 57, 709–721. doi: https://doi.org/10.1016/j.energy.2013.06.009

Hagos, F. Y., Aziz, A. R. A., Sulaiman, S. A. (2014). Trends of Syngas as a Fuel in Internal Combustion Engines. Advances in Mechanical Engineering, 6, 401587. doi: https://doi.org/10.1155/2014/401587

Yusaf, T., Yusoff, M. Z. (2000). Development of a 3D CFD model to investigate the effect of the mixing quality on the CNG-diesel engine performance. in Proceedings of the International Conference and Exhibition and Natural Gas Vehicles. Yokohama.

Yusaf, T., Baker, P., Hamawand, I., Noor, M. M. (2013). Effect of Compressed Natural Gas Mixing on the Engine Performance and Emissions. International Journal of Automotive and Mechanical Engineering, 8, 1416–1429. doi: https://doi.org/10.15282/ijame.8.2013.29.0117

ANSYS FLUENT 12.0 Theory Guide. Available at: https://www.afs.enea.it/project/neptunius/docs/fluent/html/th/main_pre.htm

Abo-Serie, E., Özgur, M., Altinsik, K. (2015). Computational analysis of methane-air venturi mixer for optimum design. Proceedings of the 13th International Combustion Symposium. Bursa, 9–11.

Sharma, H., Singh, S., Goel, R. (2014). CFD analysis of the natural gas based Carburetor for a two stroke spark Ignition engine. National Conference on “Recent Advances in Mechanical Engineering” RAME – 2014. Available at: http://www.ijmerr.com/SpecialIssue/12_(p.82-88).pdf

Mahmood, H. A., Adam, N. M., Sahari, B. B., Masuri, S. U. (2016). Investigation On The Air-Gas Characteristics Of Air-Gas Mixer Designed For Dual Fuel-Engines. International Journal of Control Theory and Applications, 9 (30), 195–216.


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Published
2021-09-13
How to Cite
Mahmood, H. A., Al-Sulttani, A. O., Attia, O. H., & Adam, N. M. (2021). A numerical study to improve the position and angle of the producer gas injector inside the intake manifold to minimize emissions and efficiency enhancement of a bi engine. EUREKA: Physics and Engineering, (5), 100-109. https://doi.org/10.21303/2461-4262.2021.002045
Section
Engineering