Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Synchronizer for dual-clutch automatic transmission of car

A technology of automatic transmission and double clutch, which is applied in the direction of clutches, mechanical drive clutches, mechanical equipment, etc., can solve the problems of cost increase, synchronous torque limitation, shift fork and hydraulic system requirements, and achieve cost reduction and large synchronization Moment, cost reduction effect

Inactive Publication Date: 2012-03-07
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing dual-clutch automatic transmission (DCT) inertia lock ring synchronizer for cars has the following disadvantages: First, due to the limitation of space layout, especially the limitation of radial space, the synchronization capacity of the synchronizer ( That is: the synchronous torque generated by the unit axial force acting on the synchronizer sleeve) is limited
Secondly, it is the cost. Up to now, three cones have been used at most, because the effect of using four cones on the synchronous capacity increase is not obvious, but the cost is significantly increased.
Again, the shifting force is large, and the requirements for the shift fork and hydraulic system are high

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
  • Synchronizer for dual-clutch automatic transmission of car
  • Synchronizer for dual-clutch automatic transmission of car
  • Synchronizer for dual-clutch automatic transmission of car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] see figure 1 and figure 2 , the synchronizer used in dual-clutch automatic transmission for cars includes an inertia lock ring type synchronizer, which includes an X-gear engaging ring 1, an X-gear synchronizing ring 2, a synchronizer engaging gear sleeve 3, and a synchronizer spline hub 4 , Y gear synchronizing ring 5 and Y gear engaging gear ring 6; wherein the synchronizer engaging gear sleeve 3 is set on the X gear synchronizing ring 2 and Y gear synchronizing ring 5 at the same time; the synchronizer spline hub 4 is located on the X gear synchronizing ring 2 and In the inner circumference of the corresponding end of the Y gear synchronizing ring 5; the axial side surfaces of the synchronizer spline hub 4 are respectively equipped with synchronizer springs 7, and the circumference of the synchronizer spline hub 4 is evenly distributed with three axial slide grooves and Three axial booster slots, each slide slot is equipped with a slider 8; the circumference of the...

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 synchronizer for a dual-clutch automatic transmission of a car. The synchronizer comprises an inertia locking-ring-type synchronizer, and is characterized in that the middle part of each boost groove on a splined hub of the synchronizer is a straight groove, and two ends of the straight groove are bellmouths extending outwards; and the end part of an indexing bump on a corresponding X-gear synchronous ring is an isosceles trapezoid, wherein the waist edges at two sides of the indexing bump are correspondingly matched with two side edges of the bellmouths of the boost groove of the splined hub for the synchronizer. According to the invention, based on the existing locking-ring-type synchronizer, improvements are made to achieve the following three aims: firstly, the synchronization capacity can be increased; secondly, cost is lowered and performances are improved, a single-cone synchronizer can replace a bi-conical synchronizer, the bi-conical synchronizer can replace a tri-conical synchronizer, and the tri-conical synchronizer develops more potentiality; and additionally, the gear shift force acting on a gear sleeve of the synchronizer is reduced, and the requirements for a gear shift fork and a hydraulic system are lowered.

Description

technical field [0001] The invention belongs to the technical field of automobile gearboxes, and in particular relates to an inertia lock ring synchronizer for a dual-clutch automatic gearbox (DCT) of a car. Background technique [0002] The existing dual-clutch automatic transmission (DCT) inertia lock ring synchronizer for cars has the following disadvantages: First, due to the limitation of space layout, especially the limitation of radial space, the synchronization capacity of the synchronizer ( That is: the synchronous torque generated by the unit axial force acting on the synchronizer sleeve) is limited. Secondly, it is the cost. Up to now, three cones have been used at most, because the effect of using four cones on the synchronous capacity increase is not obvious, but the cost is significantly increased. Again, the shifting force is large, and the requirements for the shift fork and hydraulic system are high. Because in DCT, the shift force of the synchronizer come...

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): F16D23/04
Inventor 宋瑞起祁稳郑海兵余洪
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com