Patent ID: 6568280
Filing Date: 2003-05-27
Classification: F16H,G06F,Y02T

Abstract:
A method of computing belt tension distribution of a metal-pushing V-belt for CVTs having an array of V-shaped blocks and plural sets of rings each running through slots formed at the blocks and wound around pulleys comprising the steps of:(a) modeling the blocks as rigid bodies with contact points to represent surface to surface contact between adjacent blocks and between the blocks and the pulleys, while modeling the rings as a closed-loop string which is subject to an elastic tension caused by the pulleys; (b) dividing the closed-loop string into string segments, and computing the elastic tension and computing a friction force caused by at least one of the blocks for each of the string segments using the computed elastic tension as an initial value; (c) computing a friction-induced-tension based on the computed friction force for each of the string segments; (d) repeating the steps (b) and (c) until a difference of the friction-induced-tension converges to a tolerance value; and (e) computing a ring tension based on an average of the computed friction-induced tensions of the string, when the difference converges to the tolerance value.