Transmission
AssigneeLuK Getriebe-Systeme GmbH
InventorsAnton Fritzner, Franz Bitzer
Life of this patent
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Abstract
A method of controlling a friction-based torque-transmitting system in the drive train of a motor vehicle has the following steps: a) monitoring the respective rates of rotation of an input element and an output element of the torque-transmitting system, b) establishing and analyzing a correlation between said rates of rotation; and c) initiating a change in the operating mode of the torque-transmitting system if the correlation is found to have changed in excess of a given threshold limit.
Claims14
A method of controlling an operating state of a system that transmits torque through a frictional engagement in a drive train of a motor vehicle, comprising the steps of
- a) monitoring fluctuations of operating parameters of the drive train, the operating parameters being a first rate of rotation of an input element of said system and a second rate of rotation of an output element of said system;
- b) establishing a correlation between said first rate of rotation and said second rate of rotation;
- and
- c) initiating a change in said operating state if said correlation is found to have crossed a threshold level.
A method of controlling an operating state of a system that transmits torque through a frictional engagement in a drive train of a motor vehicle, comprising the steps of
- a) monitoring fluctuations of operating parameters of the drive train, the operating parameters being of a kind that will indicate when the torque is about to increase to an excessive level;
- and
- b) initiating a change in said operating state if the torque is about to increase to an excessive level.
Apparatus for controlling an operating state of a system that transmits torque through a frictional engagement in a drive train of a motor vehicle, comprising:
- (a) first means for monitoring fluctuations of operating parameters of the drive train, the operating parameters being a first rate of rotation of an input element of said system and a second rate of rotation of an output element of said system;
- b) second means for establishing a correlation between said first rate of rotation and said second rate of rotation;
- and
- c) third means for initiating a change in said operating state if said correlation is found to have crossed a threshold level.
Dependencies are inferred from the claim text.