Total views : 297

Maintaining Boundary and Hydrodynamic Lubrication Modes in Operating High-pressure Fuel Injection Pumps of Marine Diesel Engines

Affiliations

  • Marine Power Plants Department, Odessa National Maritime Academy, Odessa, Ukraine

Abstract


Background/Objectives: The effects of hydrodynamic and boundary lubrication occurring in the plunger-bushing friction pair of the high-pressure fuel injection pump in marine combustion engines have been studied. Methods: To determine thickness of the boundary lubrication layer of fuel, optical double refraction method has been suggested based on the optical anisotropy phenomenon. As an evaluation of tribotechnical characteristics of the plunger-fuel-bushing triad the electric impulse wear measuring technique has been suggested enabling to determine friction force and wear intensity. Findings: It has been proven that the fuel located in the gap between the plunger ram and the bushing performs lubricating functions. It has been shown that, owing to the elastic and damping properties and the disjoining pressure, the boundary layer of fuel helps reducing friction loss and wear of the contacting surfaces. The thickness of the fuel boundary layer affected by two-phase pressure of plane-parallel metallic surfaces has been determined. Marine fuels with viscosity value of 380…500 sSt at 40оС were used for the experiments; investigations were carried out in the temperature range of 30…60оС. It has been experimentally established that the thickness of the fuel boundary layer ranges within 4…12 micrometer, depending on operational conditions, which enables hydrodynamic and boundary (preventing direct contact between the surfaces) modes of lubrication. The ways for improving regularity of molecules in the boundary layer and for controlling its thickness have been suggested. Applications/Improvements: Liquid-crystalline properties of the boundary layers of fuel can be used in the precision pairs of high-pressure fuel injection pumps to reduce mechanical losses and to improve fuel efficiency.

Keywords

Bushing, High-pressure Fuel Injection Pump, Hydrodynamic and Boundary Lubrication, Marine Combustion Engine, Plunger Ram, Wear Intensity.

Full Text:

 |  (PDF views: 247)

References


  • Sundarraman P, Baskaran R, Sunilkumar V, Raghaevndra K, Saha SK, Vasa NJ. Modeling and analysis of a fuel injection pump used in diesel engines. International Journal of Automotive Technology. 2012 Feb; 13(2):193–203. DOI: 10.1007/s12239-012-0016-5.
  • Sagin SV, Solodovnikov VG. Cavitation treatment of high-viscosity marine fuels for medium-speed diesel engines. Modern Applied Science; Published by Canadian Center of Science and Education. 2015; 9(5):269–78. DOI: 105539/mas.v9n5p269.
  • Dryupin PV, Golovin AYu. Improving wear resistance of plunger pairs in fuel injection equipment run with bio-diesel fuel. Yekaterinburg: Urals State Agrarian University, Agricultural Bulletin of Urals; 2011. p. 37.
  • Desantes JM, Benajes J, Molina S, Gonzales CA. The modification of the fuel injection rate in heavy duty diesel engines: Part 2: effects of combustion. Applied Thermal Engineering. 2004 Dec; 24(17–18):2715–26. DOI:10.1016/j.applthermaleng.2004. 05.004.
  • Anderson M, Salo K, Fridell E, Hallquist AM. Characterization of particles from a marine engine operating at low loads. Atmospheric Environment. 2015 Jan; 101:65–71. DOI:10.1016/j.atmosenv.2014.11.009.
  • Alkaner S, Zhou P. A comparative study on life cycle analysis of molten carbon fuel cells and diesel engines for marine application. Journal of Power Sources. 2006 14 Jul; 158(1):188–99. DOI: 10.1016/j.jpowsour.2005.07.076.
  • Matskevich DV, Zablotsky YV. Testing the lubricity of diesel fuels. ship power plants: Odessa, ONMA, Sc.-Tech.Col; 2011. p. 145–53.
  • Lyashenko YaA. Tribological system in boundary friction mode under periodic environmental loads. Journal of Technical Physics. 2011; 81(6):125–32.
  • Shestakov DS, Kochev NS. Methods for troubleshooting uneven fuel feed in adjusting high-pressure fuel injection pumps of multi-cylinder diesel engines. Saint Petersburg, Engine Building. 2015; 3:22–5.
  • Yarantsev MV, Konkov AYu, Lashko VA, Kocherga VG. Evaluation of plunger wear without removing the diesel fuel injection pump. Bulletin of Pacific National University, Khabarovsk. 2013; 2(29):123–32.
  • Lyashenko YaA. Tribological properties in modes of dry, liquid and boundary friction. Journal of Technical Physics. 2011; 81(5):115–21.
  • Kiriyan SV, Altois BA. Rheology of motor oils with quasi-liquid crystalline layers in friction triad. Friction and Wear. 2010; 31(3):312–18.
  • Pozdnyakov AO. Mass spectrometric research of polymer-fullerene composites, Ch. 4 in book: Fullerene Research Advances, Kramer CN, editor. Nova Science Publishers, Inc; 2007.
  • Temiryazev AG, Borisov VI, Saunin SA. Atomic force microscopy on surface with a developed profile. Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 2014 Jul; 8(4):708–11. DOI: 10.1134/S1027451014030161.
  • Sagin SV, Zablotskiy YuV. Identifying tribological and technical characteristics of surfaces by the structure of wall layers in hydrocarbon liquids. Problems of Engineering, Odessa, ONMA. Journal of Science and Production. 2011; 3:78–88.
  • Sagin SV. Investigating interrelations between liquid-crystalline properties of boundary lubrication layers and rheological characteristics of motor oils. Technical sciences. Collection of articles. 38th International Scientific and Research Conference, Novosibirsk, SibAk; 2014. p. 46–54.
  • Im JY, Kim BS, Choi HG, Cho SM. Effect of pressure for direct fuel cells using DME-based fuels. Journal of Power Sources. 2008 15 Apr; 179(1):301–04. DOI: 10.1016/j.jpowsour.2007.12.046.
  • Hwang JJ, Wang DY, Shih NC. Development of a lightweight fuel cell vehicle [Internet]. [Cited 2016 Feb 13]. Available from: http://www.sciencedirect.com/science/article/pii/S0378775304009565.
  • Sagin SV, Semenov OV. Motor oil viscosity stratification in friction units of marine diesel motors. American Journal of Applied Sciences. 2016; 13(2):200–08. DOI: 10.3844/ajassp.2016.200.208.
  • Andreadis P, Zompanakis A, Chryssakis C, Kaiktsis L. Effects of the fuel injection parameters on the performance and emission formation in a large bore marine diesel engine. International Journal Of Engine Research. 2011; 12(1):14–29. DOI: 10.1243/14680874JER511.
  • Parsons DF, Walsh RB, Craig VSJ. Surface forces, surface roughness in theory and experiment. The Journal of Chemical Physics. 2014; 140. DOI:10.1063/1.4871412.
  • Zablotskiy YuV. Studying performance of marine medium-speed diesels with fuels of different structural composition. Technical sciences. Collection of articles from 38th International Scientific and Research Conference, Novosibirsk: SibAk; 2014. p. 26–33.
  • Kianimanesh A, Yu B, Yang Q, Freiheit T, Xue D, Park SS. Investigation of bipolar plate geometry on direct methanol fuel cell performance. International Journal of Hydrogen Energy. 2012 Dec; 37(23):18403–11. DOI:10.1016/j.ijhydene.2012.08.128.
  • Ginzburg BM, Tochilnikov dg, Lyashkov ai, Ugolkov vl, Lavrentyev vk, shijan pa, ponimatkin vp. tribological properties of poly (para-phenylene sulfide) and its carbon fiber composites with water lubrication. Journal of Macromolecular Science, Part B: Physics. 2011; 50(6):1047–61.
  • Churaev NV. Surface forces and physic chemistry of surface phenomena. Russian Chemical Reviews. 2004; 73(1):25–36. DOI:10.1070/ RC2004v073n01ABEH000867.
  • Merzhanov KM. On the role of surface forces in contact interaction between elastic sphere and hard surface. Colloid Journal. 2001 Sep; 63(5):580–85. DOI: 10.1023/A:1012347002107.
  • Ernst P, Barbezat G. Thermal spray applications in power train contribute to the saving of energy and material resources. Surface and Coatings Technology. 2008 Jun 15; 202(18):44281231. DOI: 10.1016/j.surfcoat.2008.04.021.

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.