Dynamic analysis of hydrodynamic bearing performance in ic engines by using Taguchi technique and Response Surface Methodology (RSM)
Source: The International Journal of Advanced Manufacturing Technology, Volume 36, Numbers 11-12, April 2008 , pp. 1061-1071(11)
Abstract:Much work has already been carried out on hydrodynamic bearings under static loads, but very little literature is available on the investigation under dynamic loads and its effect on inertia forces of engine parts like pistons, connecting rods, crank shafts and flywheels. An attempt is made in this paper to analyze the effect of load, journal speed, bearing width and mass flow rate with respect to variations in oil film thickness on power loss by fluctuations in pressure gradient, stiffness and damping effect during dynamic loading conditions. The oil film thickness is measured under various conditions of fluctuating/steady load, journal speed, bearing width and mass flow rate. The oil film thickness is measured by an eddy current gap sensor to deduce the shaft trajectories by using the experimental setup. The same concept is analyzed and compared with Taguchi techniques and response surface methodology (RSM). The vital role of this technique is considered for designing the experiment (robust design) and analyzing the dynamic sinusoidal loading effect. Also we analyze whether the solution for minimizing effect of the change in load causes a change in pressure gradient, which will create a delay in time response in the pressure gradient, which creates physical contact between the journal and bearing, causing power loss.
Document Type: Research Article
Publication date: April 1, 2008