Dissertation > Excellent graduate degree dissertation topics show

Simulation and Experiment on Combustion and Emission of LPG Engine

Author: ChenRun
Tutor: LiangRongGuang
School: South China University of Technology
Course: Power Machinery and Engineering
Keywords: LPG engine Idling condition. Combustion and Emissions CFD simulations
CLC: TK401
Type: Master's thesis
Year: 2011
Downloads: 87
Quote: 0
Read: Download Dissertation

Abstract


With the World Petrochemical increasingly tense energy , the use of LPG , CNG , DME ( dimethyl ether) and other alternative fuels as gasoline and diesel has become an important means to alleviate the increasingly serious energy depletion , oil prices rising and the ecological environment deterioration . LPG and good due to its low cost, high octane number and antiknock gasoline ideal alternative fuels . Therefore , modification LPG engine in China has been widely used , modified LPG engine resulting in incomplete combustion , power decline , so that the overall performance of the need for further research . This paper describes the domestic and international the LPG engine research and development status quo . And based on a modified LPG engine , the establishment of inlet and exhaust ports and combustion chamber CAD models , 3D CFD simulations required for import and export through the one - dimensional engine process simulation boundary conditions . Based on computational fluid dynamics theory , select the appropriate model , including turbulence, combustion and emissions model three - dimensional CFD numerical simulation on the the LPG engine dual idling combustion and emissions . Prototype speed characteristic curve and the experimental measured indicator diagram of the simulation model calibration, verify the reasonableness of the calculation model parameter settings . Due to the complexity of the engine combustion and emissions relationship , considering the various operating parameters of the macro adjustments in order to improve the performance of the engine . This article by changing the excess air ratio and ignition advance angle three-dimensional CFD simulation of LPG engines , from the point of view of the flame area density , the impact of varying parameters on engine combustion and emission characteristics of the different idle condition , based on the concentration of CO determine and predict the possibility of engine cylinder combustion pressure , LPG ??combustion products generated with the changes in the flame propagation process . Simulation results show : the comprehensive consideration of the cylinder pressure and temperature as well as to achieve the purpose of reducing emissions , select a reasonable amount of excess air ratio and ignition advance angle can improve the LPG engine idling emissions performance .

Related Dissertations

  1. Pilot Plant Experiments and CFD Simulations on an Oxyfuel Burner,TK223.23
  2. Adjustable thruster design and simulation of hydrodynamic performance,U664.33
  3. Fitted with a swing of Savonius wind turbine wind piece of static torque,TK83
  4. Study on Risk of Runaway Reactions Based on CFD Technique,TQ086
  5. 4108 LPG engine optimization Matching,U467.2
  6. Indoor air environment VOCs concentration field CFD simulation analysis,X511
  7. Swirl absorber absorption process of strengthening,TQ051.82
  8. Study on the Combustion of Ethylene Cracking Furnace,TQ221.211
  9. The CFD Simulation of Liquid-Liquid Flow Field of Sieve Tray Extraction Column for Production of Hydrogen Peroxide by Anthraquinone Process,TQ123.6
  10. The pre-combustion chamber spark ignition LPG engine test,TK464
  11. Study on Method of Controlling the Air-Fuel for LPG Engine,TK407
  12. Refining 3-Hydroxypropionitrile by Molecular Distillation and Simulation of Its Wiped Film Flow Using CFD Technique,TQ226.1
  13. Study on the Ignition System Based on Computer Control of Some Low-power and Single-cylinder LPG Engine,TK464
  14. New electronically controlled direct injection LPG engine injection system,TK464
  15. Study on the NO_x Model in the Methane Turbulent-Jet Combustion System,TK16
  16. Study on the Air-Fuel Ratio Controller for LPG Engine,TK464
  17. Study on the Data Acquisition and Control System for LPG Engine,TK40
  18. Study on the Emission and the Air Fuel Ratio Control Strategy for a Honda EC2500C Engine Fuelling with LPG,TK40
  19. LPG engine air-fuel ratio control and flow characteristics,TK464
  20. Experimental Study on First Cycle Cold Start and Catalyst Fast Light-off of an EFI LPG Engine,TK464

CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > General issues > Theory
© 2012 www.DissertationTopic.Net  Mobile