This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Finite Difference Model for Journal Bearings Applied in the Camshaft Support Elements
Technical Paper
2003-01-3557
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The modern passenger cars structure has the valve actuation system with usual application in combustion engines. These mechanisms offer the possibility to change the rotational movement into an oscillating movement, so this simple construction causes an elementary higher dynamic stiffness, but gives costs advantages in opposite of lever controls. Regarding the valve actuation over tribology view increase the cam / tappet friction losses. The friction forces had decreased considerably through the use of roller cam, which in comparison to cams and flat systems is possible to save up to 70% [17].
The friction increased in the camshaft / tappet system leads to an elevate heat stream, that must be derived from the contact with the complete system and the lubricant oil. The objective of this paper is to introduce the oil film pressure distribution in different boundary conditions, the modeling first part.
Recommended Content
| Journal Article | Crankshaft and Bearing Analysis Process for a Light Duty Automotive Engine |
| Technical Paper | Gerotor Lubricating Oil Pump for IC Engines |
| Technical Paper | An Analysis of Lubricating System of Automobile Gasoline Engine |
Topic
Citation
Mastaler, A. and Cavalca, K., "Finite Difference Model for Journal Bearings Applied in the Camshaft Support Elements," SAE Technical Paper 2003-01-3557, 2003, https://doi.org/10.4271/2003-01-3557.Also In
References
- 1976 35 50
- Cattaruzzi, E.F. 1998
- Cavalca, K.L. Cattaruzi, E.F. 2001 “A CAE Tool Dedicated to Design of Hidrodynamic Berings” IJMEE - The International Journal of Mechanical Engineering Education Manchester - UK 29 4 361 380
- Cavalca, K.L. Idehara, S.J. Pederiva, R. Dedini, F.G. 2001 “Experimental Non-Linear Model Updating Applied in Cylindrical Journal Bearings” ASME-DETC, Pittisburg DETC 2001/VIB-21549
- Cavalca, K.L. Lima, E.M. 1998 RBCM Rio de Janeiro 20 2 244 262
- Cavalca, K.L. 2000 Unicamp
- Irretier, H. Lindemann, S. 2002 “Improvement of Damping Parameters of Flexive Rotors by Experimental Model Analysis and Model Updating” 6 Th IFToMM Sydney 388 395
- Jacon, F.T.P Cavalca, K.L 2000 “Linear Model Updating Applied to Rotating Machines” SAE Technical Papers Danvers MA USA SAE Paper number 2000-01-3189
- Koç, E. 1990 “An Investigation into the numerical solution of Reynolds lubrication equation with special reference to thrust bearings ” Tribology International 429 437
- Maas, G Mastaler, A. 2000 “Continuous improvement of Hydraulic Lash Adjusters Regarding Engine Performance” SAE Technical Papers, 2000-01-3200 São Paulo - Brasil
- Norton, R.L. 1996 “Machine Design, Prentice Hall Inc” 648 656
- Pinkus, O. 1956 “Analysis of Elliptical Bearings” TRANS. ASME 78 965 973
- Pinkus, O. 1959 “Analysis and Characteristics of Three-Lobe Bearing, Journal of basic Engineering” 49 55
- Reynolds, O. 1886 “On the Theory of Lubrication and its Application to Mr. Beauchamp Tower's Experiments” “Experimental Determination of the Viscosity of Olive Oil” 188
- Schmidt, Andreas Dipl., Ing. 1995 12 17
- Weiser, H.P. Nordmann, R. 1998 “Development of Labyrinth Seals and Gas Bearings in High-Performance - Turbomachinery Using Finite Difference Techniques” 5 th IFToMM Darmstadt 252 261
- Bartsh, C. 1994
- Holland, J. Schmidt, A. 1993
- Mastaler, A. Cavalca, K. L. 2003 “Journal Bearings Applied in the Camshaft Support Elements for High Performance Engines” Cobem 2003