Method and apparatus for controlling electromagnetic powder clut

Details Method and apparatus for controlling electromagnetic powder clut Method and apparatus for controlling electromagnetic powder clut

1986-03-13

1989-03-07

Lall, Parshotam S.

Boots, shoes, and leggings

192 215, 192 0033, 310105, B60K 1708

Patent

active

048112224

ABSTRACT:
Method and apparatus for controlling an electromagnetic powder clutch connected to a vehicle engine and including a coil for engaging the powder clutch to transmit an output torque of the engine as a function of an electric current to be applied to the coil such that a variation in the engine torque is absorbed by a slip of the powder clutch. An optimum amount of slip of the powder clutch is determined based on a currently required engine output and a detected output speed of the clutch. A basic control value for controlling a magnitude of the electric current to be applied to the coil is determined based on the detected engine torque, such that the determined magnitude of the electric current permits engagement of the clutch so as to transmit the detected engine output torque. The basic control value is compensated for the determined optimum amount of slip of the clutch, thereby adjusting the transmission torque of the clutch so as to absorb the variation in the output torque of the engine.

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