Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(3), 911-918 | DOI: 10.11118/actaun201664030911
The Influence of Common-rail Adjustment on the Parameters of a Diesel Tractor Engine
- Department of Technology and Automobile Transport, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic
The article deals with the issue of high-pressure indication of a diesel tractor engine Z 1727, which was fitted with a modern electronically controlled common-rail injection system. The aim of the study is to evaluate the influence of the adjustment of the fuel system - start of injection (SOI) timings and the rail pressure (PRAIL) - on the pressure development in the cylinder (PCYL), the heat release (HR) and the combustion noise level (CNLA). Furthermore, the article examines the influence of pilot and post fuel injections on the CNLA. The experiments were conducted at constant speed (1480 rpm) with four PRAILs and different SOI timings. As the results of measurements have shown, higher rail pressure causes higher pressure and a release of a larger amount of heat in the cylinder. These two parameters are the basic prerequisite for higher engine efficiency - higher power output of the engine at lower fuel consumption and decreased production of harmful emissions. Other advantages of the common-rail fuel system include the potential of dividing the main injection dose into the pilot injection and main injection, as well as the potential post injection. The measurements have further demonstrated that including a pilot injection phase significantly contributes to a decrease in combustion noise level as well as a more even, quieter operation of the engine.
Keywords: cylinder pressure, start of injection timings, rail pressure, combustion noise level, heat release
Grants and funding:
This work was supported by the project No. IP 38/2015 "Analysis of combustion pressures of diesel tractor engine Zetor Z1717 Stage IV" and financed by Internal Grant Agency of Mendel University in Brno, Faculty of Agronomy. This research has been realized in collaboration with workplace of Research and Development of Zetor Tractors and with Swiss company Kistler, which loaned the measurement chain.
Prepublished online: July 4, 2016; Published: July 1, 2016 Show citation
| ACS | AIP | APA | ASA | Harvard | Chicago | IEEE | ISO690 | MLA | NLM | Turabian | Vancouver |
References
- AGARWAL, A. K., SRIVASTAVA, D. K., DHAR, A., MAURYA, R. K., SHUKLA, P. C., SINGH, A. P. 2013. Effect of fuel injection timing and pressure on combustion, emissions and performance characteristics of a single cylinder diesel engine. Fuel, 111: 374-383. [Online]. Available at: http://www.sciencedirect.com/science/article/pii/S0016236113002044. [Accessed: 2015, September 15]. DOI: 10.1016/j.fuel.2013.03.016
Go to original source... - BAUER, F., SEDLÁK, P., ČUPERA et al. 2013. Tractors and their applications. [in Czech]. 2nd edition. Prague: Profi Press.
- BEROUN, S. 2013. Thermodynamics of piston combustion engine. [in Czech]. [Online]. Liberec: Technical University of Liberec. Available at: http://www.kvm.tul.cz/studenti/old/PZP-Termodyn-PSM.pdf. [Accessed: 2015, September 09].
- BLAŽEK, J. 2012. Measurement and analysis of combustion pressures. [in Czech]. [Online]. Liberec: Technical University of Liberec. Available at: http://www.kvm.tul.cz/studenti/texty/experiment_metody/In-TECH2_mereni_tlaku.pdf. [Accessed: 2015, September 09].
- D'AMBROSIO, S., FERRARI, A. 2015. Potential of double pilot injection strategies optimized with the design of experiments procedure to improve diesel engine emissions and performance. Applied Energy, 155: 918-932. [Online]. Available at: http://www.sciencedirect.com/science/article/pii/S0306261915008089. [Accessed: 2015, October 4]. DOI: 10.1016/j.apenergy.2015.06.050 Go to original source...
- KYUNGHYUN, R. 2013. Effects of pilot injection pressure on the combustion and emissions characteristics in a diesel engine using biodiesel-CNG dual fuel. Energy Conversion and Management, 76: 506-516. [Online]. Available at: http://www.sciencedirect.com/science/article/pii/S0196890413004640. [Accessed: 2015, October 4]. Go to original source...
- MACEK, J. 2007. Combustion engines I. [in Czech]. 1st edition. Prague: Publishing CVUT.
- MOHAN, B., YANG, W., CHOU, S. K. 2013. Fuel injection strategies for performance improvement and emissions reduction in compression ignition engines - A review. Renewable and Sustainable Energy Reviews, 28: 664-676. [Online]. Available at: http://www.sciencedirect.com/science/article/pii/S1364032113005911. [Accessed: 2015, October 4]. DOI: 10.1016/j.rser.2013.08.051 Go to original source...
- PÍŠTĚK, V., ŠTĚTINA, J. 1991. Calculation methods in construction of combustion engines. [in Czech]. 1st edition. Brno: VUT.
- SMETANA, C. 1998. Noise and vibration: measurement and evaluation. [in Czech]. 1st edition. Prague: Communication technology.
- TORREGROSA, A. J., BROATCH, A., GARCÍA, A., MÓNICO, L. F. 2013. Sensitivity of combustion noise and NOx and soot emissions to pilot injection in PCCI Diesel engines. Applied Energy, 104: 149-157. [Online]. Available at: http://www.sciencedirect.com/science/article/pii/S0306261912008331. [Accessed: 2015, October 4]. DOI: 10.1016/j.apenergy.2012.11.040 Go to original source...
- VLK, F. 2003. Vehicle combustion engines. [in Czech]. 1st edition. Brno: Prof. Ing. František Vlk, DrSc.
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY NC ND 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.