Clutch torque control method for DCT vehicle

A technology of clutch torque and control method, applied in the direction of clutch, mechanical equipment, etc., can solve the problems of unable to obtain dry clutch every time, engine rise, incorrect information, etc.

Active Publication Date: 2015-11-04
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the TS curve characteristics of the dry clutch cannot be obtained practically every time, when the latest TS curve characteristics are used to control the gear change in a sharply changed state or incompletely acquired state, it leads to control based on incorrect information. Actuator
In this way, the shifting shock or engine camber will occur when the engine speed suddenly rises.

Method used

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  • Clutch torque control method for DCT vehicle
  • Clutch torque control method for DCT vehicle

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Embodiment Construction

[0018] Reference will now be made in detail to various embodiments of the invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be appreciated that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments but also various alternatives, modifications, equivalents and other alternatives, modifications, equivalents and others, which may be included within the spirit and scope of the invention as defined by the appended claims. implementation plan.

[0019] see figure 1 and figure 2 , according to various embodiments of the present invention, the clutch torque control method for a dual clutch transmission (DCT) vehicle includes: a shift start determination step S10, determining whether to start a power-on downshift, wherein the dr...

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Abstract

A clutch torque control method for a dual clutch transmission (DCT) vehicle may include a shift initiation determining step of determining whether power-on downshift in which a driver steps on an accelerator pedal to change a current shift stage to a lower shift stage is initiated, and a torque correcting step of correcting basic control torque according to torque-stroke (TS) curve characteristics for controlling a disengagement-side clutch within a real shift range in which a number of rotations of an engine is changed with observer torque calculated by a torque observer when the power-on downshift is initiated, and determining the corrected basic control torque into control torque of the disengagement-side clutch.

Description

technical field [0001] The present invention generally relates to a clutch torque control method for a dual clutch transmission (DCT) vehicle, and more particularly, to a technique for controlling clutch torque of a dry clutch constituting the DCT. Background technique [0002] A dual clutch transmission (DCT) is designed to receive power from a power source, such as an engine, through two clutches to selectively send power to two input shafts set to allow a range of gears, enabling odd and even gears gears, and the gears are changed sequentially by torque transmission that engages one of the two clutches and disengages the other. Thus, gears can be changed to higher or lower gears without reducing torque. [0003] Among DCTs, some DCTs use two clutches connected to two input shafts as wet clutches, and some DCTs use two clutches as dry clutches. Unlike wet clutches, dry clutches are characterized by a continuously varying torque stroke (TS) curve, which is the characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/00
CPCF16D48/062F16D2500/30415F16D2500/3067F16D2500/3144F16D2500/70252F16D2500/70264F16D2500/7044F16D2500/70605F16D2500/3042F16D2500/30421
Inventor 曺圣铉金正喆
Owner HYUNDAI MOTOR CO LTD
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