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Clutch control method for determining clutch kiss-point during running conditions

  • US 6,086,514 A
  • Filed: 08/12/1998
  • Issued: 07/11/2000
  • Est. Priority Date: 12/20/1996
  • Status: Expired due to Fees
First Claim
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1. A method of determining, during a clutch re-engagement process, the kiss-point of a vehicle clutch having a driven plate which drives a vehicle from an engine via a multi-ratio transmission, operation of the clutch being via a clutch actuating mechanism under the control of an electronic control means, said method comprising the steps of:

  • checking that the throttle of the engine is closed and that the vehicle is in an engine overrun condition;

    partially re-engaging the clutch up to a point where the clutch increases the engine speed to a substantially constant level below the speed of the driven plate of the clutch;

    measuring the position of the clutch actuating mechanism when in said partially engaged condition;

    computing from said position measurement and the known engagement/torque characteristics of the clutch the current kiss-point position;

    saving said current kiss-point position, andcompleting the engagement of the clutch.

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