Lubrication Investigation of a Non-Straight Internal Combustion Hydrodynamic Bearing 2009-36-0171
In order to achieve new emission regulations and customer requirements, the peak cylinder pressure (PCP) is steadily being increased and as a consequence, the loads applied on the cranktrain have increased significantly over the last decade. The higher loads have forced a complete revision of the cranktrain design affecting the design of pistons, connecting rods, and crankshafts. Consequently, the concept and performance of the related bearings have to be improved, since they are the key elements that link the cranktrain components.
The purpose of this work is to evaluate the lubrication parameters of a non-straight bearing, so called U-Shape bearing. This development presents two main challenges: one is the simulation of the lubrication parameters and the other is the achievement of an ensemble of bearing dimensions that makes the prototypes construction feasible.
Due to this particular bearing design, the commercial simulation tools do not apply. Therefore, dedicated mathematical models were developed and implemented into a computer code. By solving Reynolds equation with this newly developed computer code, it was possible to evaluate some important bearing parameters such as: peak oil film pressure (POFP) and minimum oil film thickness (MOFT). The values of these parameters were compared with the ones obtained in conventional straight bearings traditionally used in the automotive industry.
Citation: Junior, D., Galli, L., and Cruz, R., "Lubrication Investigation of a Non-Straight Internal Combustion Hydrodynamic Bearing," SAE Technical Paper 2009-36-0171, 2009, https://doi.org/10.4271/2009-36-0171. Download Citation
Author(s):
Durval Duarte Junior, Luis Antônio Fonseca Galli, Robson Ferreira da Cruz
Affiliated:
D Duarte Sistemas e Processos Industriais EPP, Thyssenkrupp Metalúrgica Campo Limpo
Pages: 8
Event:
SAE Brasil 2009 Congress and Exhibit
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Connecting rods
Mathematical models
Bearings
Environmental regulations and standards
Pistons
Crankshafts
Engine cylinders
Combustion and combustion processes
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
