Search Results

The aim of this work is to demonstrate the methodology used to optimize a knuckle for Mac Pherson to improve weight reduction and cost considering the various engineering design criteria that apply to this type of component. The engineering design criteria surrounding this development and that will be present in the study are: stiffness, critical loads, fatigue and plasticity (permanent deformation).

This work presents an experimental study to analyze the influence of surface finishing on engine journal bearing performance. Bimetallic bearings were manufactured with two bored finishings, one called conventional and another microprofiled. Microprofiled bearings have a potential advantage due to the higher conformability of these parts under the engine operational conditions. Bench tests and engine test were conducted in order to check the loading carrying capacity (LCC) until seizure occurrence; the temperature was evaluated at the steel back of the tested parts. Surface of the parts was evaluated after the tests. The results showed that microprofiled bearings presented slightly lower temperature at steel back during the bench tests than the conventional bearings. The loading carrying capacity for both parts was similar, due to the relatively low speed test.