Dissertation > Excellent graduate degree dissertation topics show

Study on Combustion Characteristics and Emissions of a DI Diesel Engine Fueled with Pistacia Chinensis Bunge Seed Biodiesel

Author: WangZuo
Tutor: MaZhiHao
School: Henan University of Science and Technology
Course: Power Machinery and Engineering
Keywords: diesel engine Pistacia chinensis Bunge seed biodiesel combustion emission
CLC: TE667
Type: Master's thesis
Year: 2010
Downloads: 83
Quote: 1
Read: Download Dissertation

Abstract


The problems of petroleum shortage and environmental pollution impel the research of alternative fuel. Biodiesel is typically produced by a reaction of a vegetable oil or animal fat with an alcohol such as methanol or ethanol in the presence of a catalyst to yield mono-alkyl esters and glycerin, which is removed. Biodiesel has excellent environmental protection characteristic and biodegrade easily. Storage and transportation and application are secure in that it has high flash point. So biodiesel is attracted more and more attention.This topic first prepares biodiesel with pistacia chinensis bunge seed oil and methanol as raw materials. By analysing the physicochemical properties of this kind of biodiesel, It obtains that the main components of pistacia chinensis bunge seed biodiesel are methyl oleate, methyl linoleate and methyl palmitate, and the cetane number of pistacia chinensis bunge seed biodiesel is more higher than that of diesel, its low heat value is lower than diesel’s, and its density is slightly higher than diesel.Then experimental study of a direct injection diesel engine fuelled with Pistacia chinensis Bunge seed biodiesel/diesel blends. The study shows that the brake specific fuel consumption of the blends is increased at medium and light load when compared with diesel, and at heavy load it is similar for both the two types of fuels. With the use of the blends against the diesel fuel, the ignition delay is shortened, maximum rate of pressure rise and combustion heat release rate are decreased, the corresponding crank position of maximum premixed combustion peak is advanced, and the combustion duration is prolonged. Maximum cylinder mean temperatures with different fuels have little difference. The blends have lower CO, HC and smoke emission than those of diesel. The NO_x emission is reduced with the use of B10 and B20 but increased with the use of B30.Lastly, under different fuel supply advance angle, this study deals with the combustion characteristics and emissions of a direct injection diesel engine fueled with diesel/biodiesel blends is carried out. The study shows that the most economic fuel supply advance angle of the blends is almost the same at the maximum torque and rated conditions, that is to say, the most economic fuel supply advance angle of the blends is 15°before top dead center at the maximum torque condition and 19°before top dead center at rated condition. With the increase of fuel supply advance angle, CO and smoke emission is decreased first and then increased, THC emission is decreased, while NO_x is increased greatly. The blends have lower CO, HC and smoke emission than those of diesel. The NO_x emission is reduced with the use of B10 and B20 but increased with the use of B30.

Related Dissertations

  1. Experimental Study on Pyrolysis and Combustion Characteristics of Paint and Tar Based Single Hazardous Wastes,X705
  2. Temporal and Spatial Variation of Methane Emission from Urban Lake and Its Relationship with the Hydrology-water Quality,X524
  3. Experimental Study on Combustion Characteristics of Corn Straw in a Fixed Bed,TK16
  4. Numerical Simulation of Biomass Direct Reburning,TK16
  5. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  6. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  7. Research on Testing and Analyzing Technology for Time Parameter of Aerospace Relay,TM58
  8. Experimental Study and Analyses of O2 -CO2 Production Based on Chemical Looping Method,O611.3
  9. High Pressure Common Rail Diesel Engine Fueled with Biodiesel test under different atmospheric pressure,TE667
  10. Characterization and Identification of Maturity of Pig Manure Composting,S141.4
  11. The Clinic Value of Diffusion Weighted Whole Body Imaging with Background Body Signal Suppression (DWIBS) Compared with hPET/CT,R445.2
  12. Study on Radial Nonuniformity of N2 Capacitively Coupled Plasma,O53
  13. Study of the Law and the Control Factor of Gas in Shandong Province,TD712
  14. Studies legal system of emissions trading,D922.68
  15. Design of a Pre-treatment Device for Tritium Analysis in Biological Samples and Survey of Tritium Levels in Environmental Samples,X837
  16. The Research on H Company’s Wind Power Projects CDM Development,F426.61
  17. Research on the Cast Iron Inoculation Process Optimization,TG255
  18. Experimental Research of the Optimal Operational Combustion Adjustment in the First Unit of Huaneng Dalian Power Plant,TK227.1
  19. Simulation Research on Spontaneous Combustion Law of Residual Coal in Goaf,TD752.2
  20. The Application Research on Acoustic Emission Technique for Fault Detection of Valve Leakage,TM621.6
  21. Monolith Palladium Catalyst for Purification of Acrylic Acid Emission with High Moisture Content,O643.36

CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas processing industry > Synthetic oil > Extraction of oil from other raw materials
© 2012 www.DissertationTopic.Net  Mobile