Method for determining a characteristic curve of a clutch of a clutch activation system in a drivetrain, in particular of a motor vehicle
US-2016377131-A1 · Dec 29, 2016 · US
T-S curve correction method for clutch system
US9970492B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9970492-B2 |
| Application number | US-201615351668-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 15, 2016 |
| Priority date | Nov 17, 2015 |
| Publication date | May 15, 2018 |
| Grant date | May 15, 2018 |
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Abstract
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A T-S curve correction method for a clutch system may include: detecting differences between actual positions of a clutch in first and second torque regions and a position on a T-S curve; determining whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than a first reference value; determining whether the difference between the actual position in the second torque region and the position on the T-S curve is equal to or less than a third reference value, when the difference of the actual position in the first torque region is equal to or more than the first reference value; and correcting the slope of the T-S curve in the increasing direction, when the difference of the actual position in the second torque region is equal to or less than the third reference value.
First claim
Opening claim text (preview).
What is claimed is: 1. A T-S (Torque-Stroke) curve correction method for a clutch system, comprising: detecting, by a controller, differences between actual positions of a clutch in first and second torque regions and a position on a T-S curve; determining, by the controller, whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than a first reference value; determining, by the controller, whether the difference between the actual position in the second torque region and the position on the T-S curve is equal to or less than a third reference value, when the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than the first reference value; correcting, by the controller, a slope of the T-S curve to be increased from a current slope of the T-S curve with a predetermined amount, when the difference between the actual position in the second torque region and the position on the T-S curve is equal to or less than the third reference value; and controlling, by the controller, a stroke of an actuator, based on the T-S curve with the corrected slope so that the clutch transmits a target torque from an engine, the actuator changing a position of the clutch, wherein the first torque region is a preset torque region in which the clutch transmits a torque less than a predetermined torque, and the second torque region is a preset torque region in which the clutch transmits a torque equal to or higher than the predetermined torque. 2. The T-S curve correction method of claim 1 , further comprising: determining, by the controller, whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or less than a second reference value, when the difference between the actual position in the first torque region and the position on the T-S curve is less than the first reference value; determining, by the controller, whether the difference between the actual position in the second torque region and the position on the T-S curve is equal to or more than a fourth reference value, when the difference between the actual position in the first torque region and the position on the T-S curve is equal to or less than the second reference value; and correcting, by the controller, the slope of the T-S curve to be decreased from the current slope of the T-S curve with a predetermined amount when the difference between the actual position in the second torque region and the position on the T-S curve is equal to or more than the fourth reference value. 3. The T-S curve correction method of claim 1 , wherein a second reference value is additionally used as a reference value for comparing the actual position in the first torque region to the position on the T-S curve, in addition to the first reference value. 4. The T-S curve correction method of claim 3 , wherein the first and second reference values are set to the same value in the first torque region. 5. The T-S curve correction method of claim 1 , wherein a fourth reference value is additionally used as a reference value for comparing the actual position in the second torque region to the position on the T-S curve, in addition to the third reference value. 6. The T-S curve correction method of claim 5 , wherein the third and fourth reference values are set to the same value in the second torque region.
Assignees
Inventors
Classifications
from the clutch · CPC title
Adaptations of the clutch characteristics, e.g. curve clutch capacity torque - clutch actuator displacement · CPC title
Displacement · CPC title
Transmission line of a vehicle · CPC title
Clutch torque · CPC title
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- What does patent US9970492B2 cover?
- A T-S curve correction method for a clutch system may include: detecting differences between actual positions of a clutch in first and second torque regions and a position on a T-S curve; determining whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than a first reference value; determining whether the difference …
- Who is the assignee on this patent?
- Hyundai Autron Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16D48/06. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 15 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).