Dissertation > Excellent graduate degree dissertation topics show

Study on Numerical Simulation of Diesel Engine Intake Process

Author: SunXiaoHui
Tutor: XieZongFa
School: Shandong University
Course: Vehicle Engineering
Keywords: Diesel engine Intake system Volumetric efficiency Pumping losses Numerical simulation
CLC: TK427
Type: Master's thesis
Year: 2011
Downloads: 72
Quote: 0
Read: Download Dissertation

Abstract


The process of improving the diesel engine, to make the gas mixture formation and combustion, improve engine power, economy and emissions targets, in addition to selecting a suitable inlet to obtain the best eddy than outside, into the diesel engine cylinder must also increase The amount of gas charge and increase the intake charge and intake system structure parameters; study intake system structure parameters investigated charge has a very important significance for improving the performance of the diesel engine. Rational design of the intake and exhaust system is one of the effective measures to improve the efficiency of the diesel engine inflatable. Fluctuations in the pressure of the gas in the intake pipe not only affects the cylinder intake air amount of the intake valve opening period, and the intake valve is closed, will also affect the next cycle, the cylinder intake air quantity. Pressure fluctuations on the cylinder intake air and the intake pipe length, diameter, engine speed and other factors. With the development of computer technology, the intake system developed using a combination of numerical simulation and a small amount of test method. Through the correct use of simulation, we can easily on a variety of program performance prediction and analysis of the impact of various factors on the performance of inflatable to determine the direction of improvement, and ultimately improve the engine performance can be achieved by a small number of test validation, purposes. Thesis, the intake pipe pressure fluctuations in the intake system of a single cylinder diesel engine, the intake charge and the amount of loss and pump gas. The rational design of the intake system parameters, efficient use of the resonance of the air intake to improve the intake system pressure fluctuations, to improve the charging efficiency of the engine, reducing the loss of the intake air, thereby improving the diesel engine performance by a combination of methods of the experiment and simulation calculations. First, the paper reading based on a large number of domestic and international topics related literature, summed up the engine intake resonator system Research to study the physical and mathematical model simulation calculation involved; Secondly, the use of engine one-dimensional fluid calculation software AVL Boost establish a single-cylinder diesel engine process simulation model, and calculated results and experimental data on the reliability of the model; then, using the established diesel engine working process simulation model of the engine intake system parts optimized, given the optimal intake system parameters; Finally, in order to take full advantage of the dynamic effects of the intake of the engine, a new air filter, and introduced its working principle and the general structure.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  18. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  19. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649
  20. High Pressure Common Rail Diesel Engine Fueled with Biodiesel test under different atmospheric pressure,TE667
  21. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13

CLC: > Industrial Technology > Energy and Power Engineering > Internal combustion engine > Diesel engine > Run test
© 2012 www.DissertationTopic.Net  Mobile