1992-09-01

The Dynamic Characteristics of Torsional Viscous-Friction Dampers on Reciprocating Engine Shaftings 921726

Described herein is an experimental and theoretical study of the dynamic properties of torsional viscous-friction dampers for use on Diesel engines and the characteristics of torsional vibration of the engine shaftings.At first, three kinds of dampers are fitted to a 14.3 liter, V-type, 8-cylinder Diesel engine and the torsional vibration displacements at the pulley are measured in order to investigate the characteristics of torsional vibration of the shaftings with the damper. The kinematic viscosity of silicone oil is diversely varied in this experiment. It is confirmed that an optimum viscosity exists for each damper from an experimental viewpoint.Next, the dynamic properties of the dampers and the characteristics of torsional vibrations of the engine shaftings are investigated by 3 dimensional analysis of forced vibration by the transfer matrix method, which has been developed by the authors.Finally, the optimum conditions of the viscous-friction dampers for the engine are estimated by comparing the calculated results with the experimental ones. In addition to that, the dynamic properties of the silicone oil, that are necessary for damper design, are given and the characteristics of the torsional vibration of the engine shaftings are also estimated from an analytical viewpoint.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X