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Method for correcting a coupling actuator characteristic curve

A technology for actuators and friction clutches, applied to clutches, elements with teeth, transmission control, etc., can solve problems such as inaccurate estimation

Active Publication Date: 2011-10-12
GETRAG GETRIEBE & ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this estimate is often inaccurate

Method used

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  • Method for correcting a coupling actuator characteristic curve
  • Method for correcting a coupling actuator characteristic curve
  • Method for correcting a coupling actuator characteristic curve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] exist figure 1 In , a vehicle such as a passenger car is schematically indicated at 10 . The vehicle 10 has a vehicle transmission 12 such as a dual clutch transmission. Furthermore, the vehicle transmission 12 contains at least one friction clutch 14 , in the case of a dual-clutch transmission 12 two parallel friction clutches 14 , of which only one friction clutch 14 is shown.

[0025] A clutch actuator arrangement 16 is used for automatic actuation of the friction clutch 14 . The clutch actuator arrangement 16 comprises a hydraulic circuit 18 having a pump 20 for supplying system pressure and having a pressure control valve 22 which can be electrically activated and generates pressure to a hydraulic cylinder 24 for actuating the friction clutch 14 actual pressure.

[0026] The controller 30 is used to control the actual pressure. The controller 30 receives as input the actual pressure and a higher level desired pressure such as provided by the transmission contro...

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PUM

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Abstract

A method for correcting an actuator characteristic 32 of a clutch actuator 16 for a friction clutch 14 of a vehicle transmission 12 after the commissioning thereof. The actuator characteristic 32 relates a first desired variable, such as a desired clutch pressure, to a second desired variable, such as an desired actuator current. The method comprises the steps: approaching a quasi-steady-state operating point (KP; VB) of the friction clutch 14; detecting a deviation between the first desired variable and an actual variable of the friction clutch 14; and setting up a correction function 34 for the actuator characteristic 32 according to the deviation.

Description

technical field [0001] The invention relates to a method for correcting an actuator characteristic of a clutch actuator of a friction clutch of a vehicle transmission. Background technique [0002] Modern vehicle transmissions, such as automatic manual transmissions, dual clutch transmissions, and automatic torque converter transmissions, have friction clutches that are actuated in an automatic manner. For example, a dual-clutch transmission has two friction clutches, which are both assigned to the transmission section and can be actuated in an overlapping manner in order to be able to change gears without interruption of traction. In this case, the friction clutches are actuated by respective clutch actuators, wherein the respective clutch actuators can be designed as electric or hydraulic actuators. [0003] Friction clutches are controlled, for example, via clutch pressure. Typically, however, the clutch actuator is activated via another variable such as, for example, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06F16H63/46F16H61/02
CPCF16D48/02F16D48/066F16D2048/0233F16D2048/0269F16D2500/1026F16D2500/10412F16D2500/1045F16D2500/5018F16D2500/70217F16D2500/70223F16D2500/70406F16D2500/70615
Inventor 拉尔夫·特鲁彻尔托尔斯滕·斯特佩尔安德烈亚斯·帕伦卡
Owner GETRAG GETRIEBE & ZAHNRADFABRIK HERMANN HAGENMEYER GMBH & CO KG
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