Dissertation > Excellent graduate degree dissertation topics show

Study of Reducing Turbocharged Internal Combustion Engine Emission Using EGR Technology

Author: YangJianKun
Tutor: ZhangHuiMing
School: Tianjin University
Course: Power Machinery and Engineering
Keywords: Diesel engine NOx emissions EGR Cam Profile
CLC: TK401
Type: Master's thesis
Year: 2007
Downloads: 292
Quote: 5
Read: Download Dissertation

Abstract


With the rapid development of the automobile industry , automobile exhaust pollution caused by the atmosphere and more serious, especially NOx harm caused by the Governments attach great importance to . The diesel engine as the main power source for automobile , the NOx emissions control has gradually become a research hotspot . Currently, the exhaust gas recirculation (EGR) is recognized on the engine can be applied more effectively purify NOx for . This paper discusses the turbocharged engine external EGR and internal EGR technology , a more detailed analysis of the mechanism of NOx produced engine principle to conduct a more in-depth study of external EGR and internal EGR to reduce NOx emissions , and the external EGR turbo diesel engine bench test , the main contents include : ( 1) the exhaust gas recirculation technology is currently effective measures to reduce NOx emissions below average , but the turbocharged diesel engine in a high load average exhaust pressure intake pressure , a simple EGR pipe received from the exhaust pipe into the trachea , the exhaust gas recirculation is difficult to achieve . To a turbocharged diesel engine designed for the study object with a set of Venturi Lee tube parallel EGR system , the system may in the case of smaller loss of pneumatic efficiency more easily introduced into the intake manifold , the exhaust and mixed therewith, and then the mixed gas of the static pressure in the diffuser tube to obtain the maximum degree of recovery , this study Venturi Lee tube flow characteristics , and the experiment to find reached Tier2 emission regulations require each condition EGR rate , as well as required under the various conditions EGR rate and NOx, smoke , fuel consumption relationship . EGR rate conditions into account to meet the NOx, fuel consumption and particulate emissions and other indicators . And cooled EGR for NOx emissions . Reduce NOx EGR After cooling effect is more obvious , these findings have important value in engineering . (2) This article also working to achieve internal EGR by changing the gas distribution cam phase and the design of new cam line research, by reducing the valve overlap angle design new cam line to reduce turbo engine the HC and NOx emissions . Finally, the turbocharged engine 's internal EGR .

Related Dissertations

  1. High Pressure Common Rail Diesel Engine Fueled with Biodiesel test under different atmospheric pressure,TE667
  2. Applied Research of Emulsified Fuel on S195 Diesel Engine,TE626.24
  3. A New 185K Single-cylinder Diesel Engine Supercharged System Development,TK423
  4. Development of Electronic Rotating EGR Control Valve and Research of Its Control System,TK421.5
  5. Improve the Mechanics Performance of the High Strength Grey Cast Iron,TG251
  6. Different atmospheric pressure turbocharged and intercooled diesel engine fueled with biodiesel research work process,TE667
  7. Get off the plateau environment with diesel engine fueled with biodiesel,TE667
  8. Research on Electronic Fuel Injection System Meet China Stage Ⅲ Emission Regulation,TK423
  9. High - pressure common rail diesel engine management system, transmission coordination strategy,TK423
  10. Experimental study of oxygen-enriched air intake combined with EGR technology for turbocharged diesel engine emissions,TK421.5
  11. Based on multi-body dynamics of the diesel engine body structure strength analysis,TK421
  12. Diesel engine valve train and timing drive system dynamic characteristics,TK423.4
  13. Flow simulation based on network analysis of diesel engine lubrication system,TK423
  14. CFD Simulation Analysis of Diesel Locomotive Intercooler Performance,TK423
  15. Numerical Study on the Mechanism of Fuel Injection Strategy Coupled with EGR for Diesel Engine,TK421
  16. The Development of A Hd Diesel Engine Combustion System Based on EGR,TK423
  17. Simulation of In-Cylinder Flow and Composition Distribution of a Gasoline HCCI Engine with Variable Valve Actuation,TK411
  18. Development of Electronic Control System and Experimental Study for a Common Rail Diesel Engine,TK423
  19. Study of Effects of Valve TrainOptimization for Engine Performance,TK403
  20. A Numerical Analysis of the HCCI Engine Auto-ignition Characteristic of Different Fuels,TK407.9
  21. The Study of Control Strategy for Euro IV Diesel Engine,U464.172

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