This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Valvetrain Design Analysis Tool with Multiple Functionality
Technical Paper
2000-01-0562
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
A multi-purpose valvetrain analysis tool has been developed, which is aimed at addressing all design issues arising in various stages of valvetrain development. Its capabilities include polynomial cam design, valvetrain mechanism kinematics, quasi-dynamic analysis, spring design/selection, multi-body elastic analysis of a single valvetrain with cam-follower and bearing tribology, and multi-valvetrain dynamics with camshaft torsional vibrations.
The basic architecture of this tool is object-oriented. Its underlying basis is a library of cam design methods, kinematics operators, and dynamics/hydraulics/tribology primitives (masses, dampers, springs, etc.). On top of this basic system lies a higher-level library of valvetrain compound objects, which are pre-programmed sub-assemblies of valvetrain components built from the primitives. These high level objects minimize modeling effort and may be mixed with primitives, allowing construction of models for virtually any valvetrain. As a result, the methodology offers both the simplicity and ease of use of a dedicated valvetrain analysis tool, but also the flexibility of general-purpose multi-body dynamics software. Additional versatility stems from the integration of the cam design, kinematics and dynamics functions into a single tool and further coupling to an engine performance analysis tool as well as general-purpose system dynamics/control software.
This paper describes the methodology and its capabilities in general and selected key submodels, specifically those for valve springs, hydraulic lash adjuster, cam-follower tribology and bearing oil films in more detail. Comparisons of predictions to experimental data are also presented, as well as examples of applications.
Recommended Content
Authors
Citation
Keribar, R., "A Valvetrain Design Analysis Tool with Multiple Functionality," SAE Technical Paper 2000-01-0562, 2000, https://doi.org/10.4271/2000-01-0562.Also In
References
- Hundal, M.S 1963 “Aid of Digital Computer in the Analysis of RigidSpring-Loaded Valve Mechanisms” SAE Progress in Technology 5 1963 409
- Johnson, G.I. 1963 “Studying Valve Dynamics with Electronic Computers” SAE Progress in Technology 5 1963 10 28
- Sakai, H. Tsuda K. 1970 “Analysis of Valve Motion in Overhead Valve Linkages - Measurement of Valve Motion and Discussion of Single Mass System” Bulletin of the JSME 13 55 1970 120 128
- Kanesaka, H. Akiba K. Sakai H. 1977 “A New Method of Valve Cam Design - HSDYNE Cam” SAE paper 770777
- Kosugi, T. Seino T. 1985 “Valve Motion Simulation Method for High-Speed Internal Combustion Engines” SAE paper 850179
- Kreuter, P. Pischinger F. 1985 “Valve Train Calculation Model with Regard to Oil Film Effects” SAE paper 850399
- Kreuter, P. Maas G. 1987 Influence of Hydraulic Valve Adjusters on the Dynamic Behavior of Valve Trains” SAE paper 870086
- Heath, A. R. 1988 “Valve Train design for Multivalve Automotive Gasoline Engines” SAE Paper 885133
- Akiba, K. Kakiuchi T. 1988 “A Dynamic Study or Engine Valving Mechanisms: Deteremination of the Impulse Force Acting on the Valve” SAE paper 880389
- Phlips, P. J. Schamel A. R. Meyer J. 1989 “An Efficient Model for Valvetrain and Spring Dynamics” SAE Paper 890619
- Seidlitz 1989 “Valve Train Dynamics - A Computer Study” SAE Paper 890620
- Phlips, P. J. Schamel A. 1991 “The Dynamics of Valvetrains with Hydraulic Adjusters and the Interaction with the Gas Exvhange Process” SAE Paper 910071
- Kurisu, T. Hatamura K. Omoti H. 1991 “A Study of Jump and Bounce in a Valve Train” SAE paper 910426
- Kim, D. David J. W. 1990 A Combined Model for High Speed Valve Train Dynamics (partly Linear and Partly Nonlinear)” SAE paper 901726
- Crane, M.E. Meyer R.C 1990 “A Process to Predict Friction in an Automotove Valve Train” SAE paper 901728
- Zou, D. McCormick H. 1996 “Dynamic Model and Computer Simulation of ValveTrain Asemblies with Hydraulic Lash Adjusters” SAE paper 96
- Dyson, A. 1977 “Elastohydrodynamic Lubrication and Wear of Cams Bearing Against Cylindrical Tappets” SAE paper 770018
- Staron, J. T. Willermet P. A. 1988 “An Analysis of Valve Train Friction in Terms of Lubrication Principles” SAE paper 880165
- Colgan, T. Bell J. C. 1989 “A Predictive Model for Wear in Automotive Valve Train Systems” SAE Paper 892145
- Paranjpe, R. 1992 “Comparative Friction Assessment of Different Valvetrain Types” SAE Paper 920491
- Ross, J Meyer J. 1996 “Simulating the Dynamic Behaviour of Chain Drive Systems by Advanced CAE Programs” SAE paper 960298
- Reinecke-Murmann, J. Kreuter P. 1990 “Analysis and Development of Camshaft Drive Systems Using a Computer Model” SAE paper 900448
- Buck J. Speckens F. W. Lach R. 1999 “Marked Progress in both Technique and Handling of ValveTrain and Valve Train Drive Calculation on Commercial Platforms” SAE paper 1999-01-0560
- Peterson, M.B. Winer W. O. ASME Wear Control Handbook 1980
- Hamrock, B. J. Dowson D. 1977 “Isothermal Elastohydrodynamic Lubrication of Point Contacts, Part III - Fully Flooded Results” Journal of Lubrication Technology 99 2 264
- Greenwood I. A. Tripp J. H. 1971 “The Contact of two Nominally Flat Surfaces” Poc. I. Mech. E. 185 625 633
- Wilson, C.E. Sadler J. P. Michaels W. J. Kinematics and Dynamics of Machinery Harper Collins 1983
- Dursunkaya, Z. Keribar R. 1992 “Simulation of Secondary Motions of Articulated and Conventional Piston Assemblies” SAE paper 920484