Effects of friction disc surface groove on speed‐regulating start

Abstract

Purpose

The purpose of this paper is to reveal the mechanism of effect of surface groove on speed‐regulating start.

Design/methodology/approach

This paper investigates numerically and analytically the torque transfer and load capacity of oil film between separator and friction disc with grooves commonly used at present by solving simultaneous equations: modified Reynolds, energy, and temperature‐viscosity equations.

Findings

The results show friction discs with wider and deeper groove are not suitable for speed‐regulating start. To improve performance of speed‐regulating start, distribution and size of surface groove should be designed to obtain ascending trend of oil film load capacity during startup process.

Originality/value

This paper reveals the mechanism of effect of surface groove on speed‐regulating start and facilitates the conceptual design of speed‐regulating start control system.

Citation

Meng, Q. and Hou, Y. (2009), "Effects of friction disc surface groove on speed‐regulating start", Industrial Lubrication and Tribology, Vol. 61 No. 6, pp. 325-331. https://doi.org/10.1108/00368790910988444