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The Application of Variable Event Valve Timing to a Modern Diesel Engine
Technical Paper
2000-01-1229
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
DaimlerChrysler and Mechadyne have undertaken a piece of work to investigate the opportunities for improving the operation of light duty diesel engines using variable valve timing. The very high compression ratios used in this type of engine make it essential to be able to alter the valve open periods to affect exhaust valve opening and intake valve closing, whilst leaving the valve motions largely unchanged around overlap top dead centre to avoid valve to piston contact.
This paper presents an overview of the design solution, a description of the simulation model used, performance and economy data predicted by the model and a discussion of other areas of opportunity where improvements may be possible.
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Authors
Citation
Lancefield, T., Methley, I., Räse, U., and Kuhn, T., "The Application of Variable Event Valve Timing to a Modern Diesel Engine," SAE Technical Paper 2000-01-1229, 2000, https://doi.org/10.4271/2000-01-1229.Also In
References
- Gray C. , ( 1988 ) A Review of Variable Engine Valve Timing SAE paper 880386
- Dresner, T. and Barkan, P ( 1989 ) A Review and classification of Variable Valve Timing Mechanisms SAE paper 890674
- Ahmad, T. and Theobald, M.A. ( 1989 ) A Survey of Variable-Valve-Actuation Technology SAE paper 891674
- Stone, C.R. and Kwan, E. ( 1989 ) Variable Valve Actuation mechanisms and the potential for their application SAE paper 890673
- Steinberg, R. , Lenz, I. , Koehnlein, G. , Scheidt, M. , Saupe, T and Buchinger, W. ( 1998 ) A fully continuous variable valve timing concept for intake and exhaust phasing SAE paper 980767
- Grohn, M. ( 1990 ) The new camshaft adjustment system by Mercedes Benz - Design and application in 4 valve engines SAE paper 901727
- Bassi, A. , Arcari, F. and Perrone, F. ( 1985 ) CEM - The Alfa Romeo engine management system - Design concepts - Trends for the future SAE paper 850290
- Leone, T.G. , Christenson, E.J. and Stein, R.A. , ( 1996 ) Comparison of variable camshaft timing strategies at part load SAE paper 960584
- Stein, R.A. Galietti, K.M. and Leone, T.G. , ( 1995 ) Dual equal VCT - A variable camshaft timing strategy for improved fuel economy and emissions SAE paper 950975
- Inoue, K. , Nagahiro, K. , Ajiki, Y. and Kishi, N. ( 1989 ) A high power, wide torque range efficient engine with a newly developed variable valve lift and timing mechanism SAE paper 890675
- “MIVEC” ( 1992 ) Mitsubishi's new “MIVEC” system for high efficiency at all engine speeds for more power and better mileage Japan Autotech report vol. 152 , September 20 , 1992 Pages 18 to 22
- Allen, J. and Dopson, C. ( 1991 ) The development and application of two camshaft profile switching systems Institution of Mechanical Engineers. Seminar “Variable Geometry Engines” London June 1991 Paper 8, pages 81 to 93
- Buuck, B. and Hampton, K. , ( 1997 ) Engine trends and valvetrain systems for improved performance, fuel economy and emissions ASM. Paper 1, session 1. Proceedings of the international symposium on valve train system design and materials Detroit 14-15th of April 1997
- Charlton, S.J. , Stone C.R. , Leonard, H.K. , Elliott, C. and Newman, M.J. ( 1991 ) Transient simulation of a highly turbocharged diesel engine with variable valve timing Paper C430/016, Conference “Computers in engine technology September 1991 Cambridge, UK Institution of Mechanical Engineers
- Leonard, H.J. , Stone, C.R , Charlton, S.J , Johnstone, D. , elliot, C. and Newman M. ( 1993 ) Design and analysis of a roller follower variable valve timing system SAE paper 930824
- Benajes, J. Reyes, E. and Lujan, J.M. , ( 1996 ) Intake valve pre-lift effect on the performance of a turbocharged diesel engine SAE paper 960950
- Bazari, Z. and French, B. ( 1993 ) Performance and emissions trade-offs for a HSDI diesel engine - An optimisation study SAE paper 930592
- Knibb, Gormezzano and Partners ( 1998 ) Legislation - Vehicle emissions and fuels Report commissioned by Mechadyne Ltd. KGP Derby UK
- Pethers P. ( 1997 ) The business perspective - Engineering affordable solutions to the HSDI Diesel Euro IV challenge I. Mech. E. Conference: Euro IV challenge - Future technologies and systems 3-4 December 1997 London
- “FT Automotive Environment Analyst” ( 1999 ) Financial Times Automotive Environment Analyst Issue 54 , page 12 , July 1999
- Griffiths P. J. , Mistry K.N. and Philips B.D.A. , ( 1988 ) An electro-hydraulic valve operating system for engine research and development Experimental methods in engine research and development, I. Mech.E. Seminar 1988
- Wilson, N. , Dobson, C. and Muddell, G. ( 1993 ) Active valve train system promises to eliminate camshafts Institution of Mechanical Engineers. Automotive Engineer Feb Mar 1993 , pages 42 to 44
- Kreuter, P. , Heuser, P and Schebitz, M. ( 1992 ) Strategies to improve SI engine performance by means of variable intake lift, timing and duration SAE paper 920449
- Morinigo, F. , Stuart K. and Schneider, L. , ( 1997 ) Variables of electromagnetic valve actuator performance Engine technology international , November 1997 pages 84 to 88
- “Magnavox” ( 1988 ) A proposal for the Magnavox Electronic Valve System Document serial number MX-18-145 published by Magnavox (a USA subsidiary of Phillips) 15/11/88
- Lee, J-C. Lee, C-W. , Nitkiewicz, J.A. , ( 1995 ) The application of a lost motion VVT system to a DOHC SI engine SAE paper 950816
- Lenz, H. P. , Geringer, B. , Smetana, G. and Dachs, A. , ( 1989 ) Initial test results of an electro-hydraulic variable valve actuation system on a firing engine SAE paper 890678
- Urata, Y. Umiyama, H. , Shimizu, K. , Fujiyoshi, Y. , Sono, H. and Fukuo, K. , ( 1993 ) A study of vehicle equipped with non-throttling S.I. engine with early intake valve closing mechanism SAE paper 930820
- Berg, M. , Kachel, G. and Kuhn, P. , ( 1997 ) Mechanical Fully-Flexible Valve Control with delta-sT SAE paper 970251
- Kreuter, P. , Heuser, P. , Murmann, J. , ( 1998 ) The META VVH system - A continuously variable valve timing system SAE paper 980765
- Griffiths P.J. and Mistry K.N. , ( 1988 ) Variable valve timing for fuel economy improvement, the Mitchell system SAE paper 880392
- Lancefield, T.M. , Gayler, R.J. and Chattopadhay , ( 1993 ) The practical application and effects of a Variable Valve Timing System SAE paper 930825
- Bertsch, A and Hannibal, W. ( 1997 ) Vast - A new variable valve timing system for vehicle engines SAE paper 980769
- Watson, N. and Janota, M.S. , ( 1982 ) Turbocharging the internal combustion engine Section 11.2 pages 381 to 383 Macmillan Press , 1982
- Heywood , ( 1988 ) Internal Combustion Engine Fundamentals 183 186
- Holmer, E. and Haggh, B. , ( 1969 ) The turbocharged diesel as a road transport power unit Proceedings of the Institution of Mechanical Engineers , Vol. 184 part 3P, pages 55 to 62 , 1969-7