Supercharge Your Innovation With Domain-Expert AI Agents!

Self-adaption method for wet-type double clutch automatic transmission clutch semi-junction point

A technology of wet double clutch and automatic transmission, which is applied in the direction of clutch, toothed components, transmission control, etc. It can solve the problems affecting the performance of the transmission and achieve the effect of ensuring smoothness

Active Publication Date: 2017-06-20
CHINA FIRST AUTOMOBILE
View PDF9 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of the transmission, the kisspoint of the clutch will change due to the wear of the clutch. If the control system cannot automatically adjust the kisspoint, it will affect the performance of the transmission.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-adaption method for wet-type double clutch automatic transmission clutch semi-junction point
  • Self-adaption method for wet-type double clutch automatic transmission clutch semi-junction point
  • Self-adaption method for wet-type double clutch automatic transmission clutch semi-junction point

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] like figure 1 As shown, the clutch adjusts the clutch pressure through the VFS valve of the hydraulic system, and then pushes the clutch to act by pushing the clutch hydraulic cylinder piston.

[0027] like figure 2 Shown, the adaptive method of wet double clutch automatic transmission clutch semi-engagement point (kisspoint) of the present invention is as follows:

[0028] Step 1. Determine whether the conditions for entering kisspoint self-study are met:

[0029] a. Judging whether the whole vehicle enters the power upshift torque exchange stage: collect signals such as engine torque and throttle status output by the engine controller, and at the same time collect shift type signals from the selector shift controller to determine whether it enters the power upshift torque exchange stage (wherein the method of judging entering the power upshift torque exchange stage according to signals such as engine torque, accelerator state and shift type signal belongs to the kn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a self-adaption method for a wet-type double clutch automatic transmission clutch semi-junction point. The method comprises the following steps that under the condition of entering kisspoint self learning, command pressure is calculated according to clutch required demands, and then the clutch pressure deviation integration value is calculated; when a kisspoint is low and the clutch pressure deviation integration value is continuously larger than the difference value set value for regulated times, a set step length is added for the kisspoint; and when kisspoint is high and the clutch pressure deviation integration value is continuously smaller than the difference value set value for regulated times, a set step length is reduced for kisspoint. The self-adaption method can guarantee that an automatic wet-type double clutch transmission can acquire a correct kisspoint value in the whole service life cycle, and therefore the riding comfort of a vehicle is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wet dual-clutch transmissions on complete vehicles, and relates to a method for obtaining a half-engagement point of a clutch, that is, a kisspoint, by calculating the pressure following condition of a clutch during a power upshift. Background technique [0002] Dual-clutch transmission is a kind of automatic transmission scheme, and its structure is relatively familiar. For example DE 3546 454 A1 is already known. But in recent years it has been used in batches on cars as an automatic dual-clutch transmission. The device comprises two sets of transmissions which can be regarded as independent, and each set of transmissions comprises a clutch and a gear ratio device. Each transmission gets its torque through its connection with the engine, and at the output end, they may share an output shaft that transmits the torque to the wheels. Or output through a gear mechanism to a common driven gear and then co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16D48/10F16H59/14F16H59/72F16H59/56
CPCF16D48/10F16H59/14F16H59/56F16H59/72F16H2059/147F16H2059/725
Inventor 熊杰张广辉曹龙马岩张荣辉
Owner CHINA FIRST AUTOMOBILE
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com