Advertisement

Project of Mechanical VVA Systems for Motorcycle Engines

  • Carmelina Abagnale
  • Mariano Migliaccio
  • Ottavio Pennacchia
Conference paper

Abstract

This paper presents some results of the project of innovative mechanical variable valve actuation (hereafter VVA) systems, developed for high performance motorcycle engines, at University of Napoli Federico II, Department of Industrial Engineering–Section Mechanics and Energy (hereafter DiME). In addition to a first simple (and limited) system used just as a model for the previous analysis, the work has evolved through three basic steps leading to three types of VVA systems, all mechanical systems (as defined in literature and described later). The study has been conducted implementing a numerical procedure specifically designed to determine cam profile and kinematic and dynamic characteristics of the whole system, starting from some data (as described in the paper). The model has been validated against the conventional timing system using kinematic simulations. Results of the numerical procedure verify the validity of the VVA systems and particularly a better performance of the last one, in spite of its higher complexity.

Keywords

Engine valves Internal combustion engine timing Valve timing Valve timing variation Variable valve actuation VVA systems 

References

  1. 1.
    C. Abagnale, S. Caruso, A. Iorio, M. Migliaccio, O. Pennacchia, in A New Mechanical Variable Valve Actuation System for Motorcycle Engines. ICE 2009—9th International Conference on Engines and Vehicles, Capri (NA), 13–17 Sept 2009Google Scholar
  2. 2.
    C. Abagnale, PhD thesis, Sviluppo di un sistema di attuazione variabile VVA elettroidraulico per motori pluricilindrici, Università degli Studi di Napoli Federico II, 2009Google Scholar
  3. 3.
    C. Abagnale, A. Gimelli, M. Migliaccio, O. Pennacchia, Distribuzione variabile su motori alternativi a c.i.: VVA meccanici a 3 e a 4 elementi, 65° Congresso ATI, Cagliari, settembre 2010Google Scholar
  4. 4.
    C. Abagnale, M. Migliaccio, O. Pennacchia, Design of a new mechanical variable valve actuation system for motorcycle engines ESDA2012-82317, in Proceedings of the ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis, Nantes, France, 2–4 July 2012Google Scholar
  5. 5.
    C. Abagnale, M. Migliaccio, O. Pennacchia, Mechanical variable valve actuation systems for motorcycle engines, in Lecture Notes in Engineering and Computer Science: Proceedings of the World Congress on Enegineering 2013, WCE 2013, London, UK, 3–5 July, 2013, pp. 1809–1814Google Scholar
  6. 6.
    C. Abagnale, M. Migliaccio, O. Pennacchia, Brevetto italiano n. CE2010A000002 Sistemi di distribuzione variabile di tipo meccanico a 3 ed a 4 elementi attivi, industrial patent, 2010Google Scholar
  7. 7.
    C. Gray, A Review of Variable Engine Valve Timing, SAE paper 880386Google Scholar
  8. 8.
    M. Grohn, K. Wolf, Variable Valve Timing in the new Mercedes–Benz Four-Valve Engines, SAE 891990, 1989,  doi:10.4271/891990
  9. 9.
    T.M. Lancefield, R.J. Gayler, A. Chattopadhay, The Practical Application and Effects of a Variable Event Valve Timing System. SAE paper 930825, SAE International Congress and Exposition, Detroit, MI, USA, marzo 1993Google Scholar
  10. 10.
    J.-C. Lee, C.W. Lee, J.A. Nitkiewicz, The Application of a Lost Motion VVT System to a DOHC SI Engine. SAE paper 950816, SAE International Congress and Exposition, Detroit, MI, USA, 1995Google Scholar
  11. 11.
    R.A. Stein, K.M. Galietti, T.G. Leone, Dual Equal VCT—a Variable Camshaft Timing Strategy for Improved Fuel Economy and Emissions. SAE paper 950975, 1995,  doi:10.4271/950975
  12. 12.
    T.G. Leone, E.J. Christenson, R.A. Stein, Comparison of Variable Camshaft Timing Strategies at Part Load. SAE paper 960584, 1996,  doi:10.4271/960584
  13. 13.
    Y. Moriya, A. Watanabe, H. Uda, H. Kawamura, M. Yoshioka, M. Adachi, A Newly Developed Intelligent Variable Valve Timing System—Continuously Controlled Cam Phasing as Applied to a New 3 Liter Inline 6 Engine. SAE paper 960579, SAE International Congress and Exposition, Detroit, MI, USA, 1996Google Scholar
  14. 14.
    K. Fukuo, T. Iwata, Y. Sakamoto, Y. Imai, K. Nakahara, K.A. Lantz, Honda 3.0 Liter, New V6 Engine. SAE paper 970916, SAE International Congress and Exposition, Detroit, MI, USA, 24–27 Feb 1997Google Scholar
  15. 15.
    Y. Urata, H. Umiyama, K. Shimizu, Y. Fujiyoshi, H. Sono, K. Fukuo, A Study of Vehicle Equipped with Non-Throttling SI Engine with Early Intake Valve Closing Mechanism. SAE paper 930820, 1993,  doi:10.4271/930820
  16. 16.
    M. Hitomi, J. Sasaki, K. Hatamura, Y. Yano, Mechanism of Improving Fuel Efficiency by Miller Cycle and Its Future Prospect. SAE Paper 950974, 1995Google Scholar
  17. 17.
    Y. Wang, L. Lin, S. Zeng, J. Huang, A.P. Roskilly, Y. He, X. Huang, S. Li, Application of the Miller cycle to reduce NOx emissions from petrol engines. Appl. Energy 85, 463–474 (2008)CrossRefGoogle Scholar
  18. 18.
    B. Ludwig, in Less CO2 Thanks to the BMW 4-Cyl. Valvetronic Engine. ATA International Conference on Spark Ignition Engine: the CO2 Challenge, Paper 02A5011, Venezia, Italy, Nov 2002Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Carmelina Abagnale
    • 1
  • Mariano Migliaccio
    • 1
  • Ottavio Pennacchia
    • 1
  1. 1.Department of Industrial EngineeringUniversity of Napoli Federico IINapoliItaly

Personalised recommendations