Effect of out-of-roundness on the performance of a diesel engine connecting-rod bearing
Abstract
In this paper, the dynamic performance of the Ruston and Hornsby VEB diesel engine connecting-rod bearing with circular and out-of-round profiles is analyzed. The effect of cavitation is considered by using a cavitation algorithm, which mimics JFO boundary conditions. The effect of mass inertia is accounted for by solving coupled nonlinear equations of motion. The journal profiles considered are circular, elliptical, semi-elliptical, and three lobe epicycloid. The predicted journal trajectory and other performance parameters for one complete load cycle are presented for all of the out-of-round profiles and are also compared with the predictions for the circular bearing.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1991
- Bibcode:
- 1991STIN...9231536V
- Keywords:
-
- Bearings;
- Cavitation Flow;
- Diesel Engines;
- Mathematical Models;
- Performance Prediction;
- Rods;
- Thin Films;
- Algorithms;
- Boundary Conditions;
- Dynamic Tests;
- Loads (Forces);
- Nonlinear Equations;
- Mechanical Engineering