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Improved clutch control

A technology of clutches and friction clutches, applied in clutches, fluid-driven clutches, non-mechanical drive clutches, etc., can solve problems such as clutch damage

Active Publication Date: 2017-03-01
VOLVO LASTVAGNAR AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failure to remove the blocking device before the clutch operates can result in damage to the clutch, for example after vehicle maintenance or in a new vehicle

Method used

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  • Improved clutch control
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Examples

Experimental program
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Embodiment Construction

[0039] figure 1 A vehicle in the form of a truck is shown including a pull type friction clutch. figure 2 A sectional view of a part of the clutch 1 is shown. The clutch is suitable for connecting a first rotatable shaft 2 in the form of a transmission shaft and a second rotatable shaft 3 in the form of an engine crankshaft. A first friction part 4 in the form of a friction disc is rotationally connected to the transmission input shaft 2 with a spline connection such that the first friction part 4 is movable in an axial direction relative to the transmission input shaft. The disc 4 is arranged axially pressed by the spring system 6 and clamped between the second friction part 5 and the third friction part 501 , both in the form of friction plates. The third friction part 501 is fixed to the crankshaft 3 via a flywheel and the second friction part 5 is rotationally connected but movable axially relative to the crankshaft. Therefore, the second friction part 5 is movable bet...

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PUM

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Abstract

The invention provides a method for controlling a friction clutch (1) for connecting first and second rotatable axles (2, 3) in a vehicle, where the clutch comprises - a first friction part (4) which is connected to the first axle (2), a second friction part (5) which is connected to the second axle (3), a spring element (6) which is adapted to bias the second friction part (5) into engagement with the first friction part (4) to connect the first and second axles (2, 3), and an actuator (7) comprising a movable actuator part (8, 9, 10) which is engageable with the spring element (6), and adapted to move, upon being subjected to an actuation force from an actuator control system (11), towards a disengagement position, thereby deforming the spring element (6) to disengage the second friction part (5) from the first friction part (4) to disconnect the first and second axles (2, 3), the method comprising the steps of subjecting the movable actuator part (8, 9, 10) to a test force urging the movable actuator part (8, 9, 10) towards the disengagement position, the test force being smaller than the actuation force, and subsequently or simultaneously to subjecting the movable actuator part (8, 9, 10) to the test force, determining a position of the movable actuator part (8, 9, 10).

Description

technical field [0001] The invention relates to a method for controlling a friction clutch for connecting first and second rotatable shafts in a vehicle, such as an input shaft of a transmission and a crankshaft of an engine. The invention also relates to a computer program, a computer readable medium and a controller for carrying out the steps of the method. Background technique [0002] As known, clutches are used in vehicles to connect a first rotatable shaft in the form of an input shaft of a transmission with a second rotatable shaft in the form of a crankshaft of an engine. Dry friction clutches are used extensively as master clutches in manual, automatic, and automatic mechanically engaged vehicle transmissions. [0003] In this clutch, a first friction portion in the form of a disc is rotationally connected to the transmission input shaft. The disc is arranged axially compressed and clamped by a spring system between a second and a third friction part in the form o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/02
CPCF16D48/02F16D25/0638F16D2048/0212F16D2500/50233F16H63/3026F16H2063/3036
Inventor 乔纳斯·古斯廷
Owner VOLVO LASTVAGNAR AB