This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Intake Valve Pre-lift Effect on the Performance of a Turbocharged Diesel Engine
Annotation ability available
Sector:
Language:
English
Abstract
A detailed study on the gas exchange process in a six-cylinder heavy-duty turbocharged Diesel engine with an intake valve pre-lift is performed by means of a wave action model. The analysis of the instantaneous intake and in-cylinder pressure evolution on the original engine configuration permits the detection of the angular period where the pre-lift should be produced. This drastic modification in the valve timing diagram greatly increases the internal exhaust gas recirculation and consequently the burnt gas ratio at the start of combustion. On the other hand, the turbocharger operation can be deteriorated, and the intake mass flow rate reduced. The down-sizing of the turbine is appraised on the efficiency of recovering the intake air mass, still maintaining the internal EGR levels.
Recommended Content
Authors
Topic
Citation
Benajes, J., Reyes, E., and Luján, J., "Intake Valve Pre-lift Effect on the Performance of a Turbocharged Diesel Engine," SAE Technical Paper 960950, 1996, https://doi.org/10.4271/960950.Also In
References
- Dunne, J.M. Greening, P.J. “European emission standards to the year 2000.” Proc. of the 2nd. Seminar on “Worldwide engine emission standards and how to meet them” IMechE London 1993
- Walsh, M. “Global Trends in Diesel Particulate Control - A 1995 Update” SAE Paper 950149
- Zelenka, P. Kreigler, W. Herzog, P.L. Cartellieri, W.P. “Ways Towards the Clean Heavy-Duty Diesel” SAE Paper 900602
- Needham, J.R. Faulkner, S.A. Doyle, D.M. “Developing the truck engine for ultra low emissions” Proc IMechE Journal of Automobile Engineering 205 149 1991
- Toda T. Nohira H. Kobashi K. “Evaluation of Burned Gas Ratio (BGR) as a Predominant Factor to NOx” SAE Paper 760765
- Shiga, S. Ehara, H. Karasawa, T. Kurabayashi, T. “The Control of Diesel Combustion by Means of Exhaust Gas Recirculation” SAE Paper 851544
- Lapuerta, H. Salavert, J.M. Domenech, C. “Modelling and Experimental Study about the Effect of Exhaust Gas Recirculation on Diesel Engine Combustion and Emissions” SAE Paper 950216
- Dürnholz, M. Eifler, G. Endres H. “Exhaust-Gas Recirculation - A Measure to Reduce Exhaust Emissions of DI Diesel Engines” SAE Paper 920725
- Uchida, N. Daisho, Y. Saito, T. Sugano, H. “Combined Effects of EGR and Super- charging on Diesel Combustion and Emissions” SAE Paper 930601
- Pierpoint, D.A. Montgomery, D. Reitz, R.D. “Reduction of Diesel Soot and NOx Emissions Using EGR and Multiple Injections” SAE Paper 950217
- Hübner, W. Klüting, M. Langen, P. Theissen, M. “A New External EGR-System with Improved Qualities” MTZ 55 1994 6
- Havenith, C. Edwards, S.P. Such, C.H. Needham, J.R. “Development of a heavy-duty Diesel engine towards EURO III using exhaust gas recirculation” Proc. 5th. Int. EAEC Cong. The european automotive industry meets the challenges of the year 2000 Strasbourg 1995
- Desantes, J.M. Benajes, J. Luján, J.M. Fremond, E. “Production of internal EGR in turbocharged diesel engines by means of intake valve pre-lift and exhaust valve post-lift” Proc. 5th. Int. EAEC Cong. The european automotive industry meets the challenges of the year 2000 Strasbourg 1995
- Winterbone, D.E. “The Theory of Wave Action Approaches Applied to Reciprocating Engines” Internal Combustion Engineering: Science & Technology Elsevier Applied Science London 1990
- Winterbone, D.E. Yoshitomi, M. “The Accuracy of Calculating Wave Action in Engine Intake Manifolds” SAE Paper 900677
- Payri, F. Benajes, J. Chust, M.D. “Software for Computer-Aided Study of Intake and Exhaust Systems for Engines” ENTROPIE o 162 17 23 1991
- Watson, N. Marzouk, M. Pilley, A.D. “Combustion Correlation for Diesel Engine Simulation” SAE Paper 800029
- Benajes, J. Reyes, E. Luján, J.M. “Modelling study of the scavenging process in a turbocharged Diesel engine with modified valve operation.” CMT-Report 1995
- Payri, F. Benajes, J. Reyes, M. “Modelling of turbocharger turbines in I.C. engines” CMT-Report 1994
- Watson, N. Janota, M.S. “Turbocharging the Internal Combustion Engine” McMillan Publishers Ltd 1982