Double-clutch automatic transmission shift control method

A technology of automatic transmission and control method, which is applied in the direction of transmission control, toothed components, belt/chain/gear, etc., which can solve the problems that the engine cannot be controlled independently, so as to improve the ride comfort and smooth the shifting process , Good gear shifting quality

Active Publication Date: 2011-11-02
ZHEJIANG WANGLIYANG TRANMISSION CO LTD
View PDF3 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the control of the engine speed is mainly through the communication between the transmission control unit and the engine control unit, and it is realized through bus data exchange according to the predetermined communication protocol. control, with very limited

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
  • Double-clutch automatic transmission shift control method
  • Double-clutch automatic transmission shift control method
  • Double-clutch automatic transmission shift control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In the engine speed control method of the present invention, the transmission controller is serially connected between the original accelerator pedal and the engine control line, and the transmission controller performs A / D sampling on the position signal of the accelerator pedal. Then output the corresponding voltage signal through D / A conversion to achieve the purpose of indirectly controlling the engine speed.

[0026] The control timing of the engine speed is during the gear shifting process, when the clutch of the previous gear is disengaged and the clutch of the next gear is slipping, it is in the sliding friction phase phase, so as to adapt to the change of the input shaft speed of the next gear. Wherein, in the process of upshifting, it is necessary to reduce the value of the throttle opening to realize the deceleration of the engine. In the process of downshifting, it is necessary to increase the value of the throttle opening to realize the engine speed up. Wh...

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 belongs to an automotive transmission and in particular discloses a double-clutch automatic transmission shift control method. The method is characterized in that: a duty ratio of a solenoid valve for controlling the engagement and separation of clutches in a double-clutch automatic transmission is adjusted to control a matched timing sequence of two clutches and respective joint speed and joint pressure thereof in the shifting process, so that the sum of transmission torque of a front clutch and a subsequent clutch adapts to the torque of an engine in the shifting process; and a shifting moment and a corresponding shift method are determined according to an accelerator pedal position signal acquired by a sensor, the rotating speed of the engine, the rotating speed and a clutch pressure signal of an input shaft of the front clutch and the rotating speed and a clutch pressure signal of an input shaft of the subsequent clutch. By the method, the shifting process is stable and rapid, the shifting quality is high, and the riding comfort is improved.

Description

technical field [0001] The invention belongs to the category of transmissions, in particular to a shift control method for a dual-clutch automatic transmission. Background technique [0002] The main goal of shift control of dual-clutch automatic transmission is to achieve smooth and fast power shift and improve ride comfort under the premise of realizing its basic functions. From the analysis of the shifting process of the dual-clutch automatic transmission, it can be seen that when the clutch of the previous gear is disengaged and the clutch of the next gear is slipping, due to the difference in the transmission ratio of the two gears, in order to make the vehicle speed during the shifting process Smooth changes without obvious impact. During this process, the engine speed must be effectively controlled to match the input shaft speed of the next gear. At present, the control of the engine speed is mainly through the communication between the transmission control unit and ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/684
Inventor 夏伟强刘国强于德泽孙伟任华林郭晓林陈德民陆晓平王峰麻越垠
Owner ZHEJIANG WANGLIYANG TRANMISSION CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap