Unlock instant, AI-driven research and patent intelligence for your innovation.

Clutches

A dual clutch, dry clutch technology, applied in the clutch field, can solve problems such as low efficiency, and achieve the effect of improving shifting quality, reducing cost, reducing size and mass or inertia

Inactive Publication Date: 2009-09-16
RICARDO UK LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wet clutch assemblies generally result in inefficiencies, for example, due to churning losses due to friction between lubricating oil and moving components in the assembly

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
  • Clutches
  • Clutches
  • Clutches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] Liquid-cooled dry clutch packs in figure 1 The center, generally indicated at 100, includes a driver plate 102 comprising a series of bores or passages. More specifically, the illustrated drive plate 102 has two parallel and radially extending passages 104 , 106 connected to each other by a relatively short transverse passage 108 . Passages 104 , 106 form part of a circuit for introducing coolant fluid into and out of drive plate 102 at a radially inner portion of drive plate 102 .

[0056] In this embodiment, the clutch assembly 100 is part of a dual clutch drive train (DCT) having concentric input shafts 110 , 112 . The drive plate 102 is supported on bearings 114 on the inner shaft 110 , although it could also be supported on the outer shaft 112 .

[0057] In order to reduce the axial length of the assembly, the drive plate 102 is curved to define two parallel and offset portions 116 , 118 connected to each other via a transition portion 120 . Each biasing portion...

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

A dual clutch transmission has a driving plate defining concentric engagement surfaces, concentric friction plates, concentric pressure plates, and first and second clutch springs for operation of the pressure plates in clamping the friction plates against their respective engagement surface on the driving plate. The driving plate has a top hat type configuration, whereby the engagement surfaces are axially off set from one another. Cooling passages may be provided in the driving plate. The dct is preferably nested, wherein the outer pressure plate is in axial alignment with the radially inner portion of the driving plate, the inner pressure plate is in axial alignment with the radially outer portion of the driving plate, and the friction plates are arranged in axial alignment with one another.

Description

technical field [0001] The present invention relates to clutches and particularly, but not exclusively, to clutches for automotive applications, such as dual clutch drivetrains. Background technique [0002] The performance of friction clutches degrades as the temperature of the clutch plates increases. For this reason, "wet clutches" are known, in which the clutch members are in contact with a lubricating fluid to reduce friction and heat transfer. [0003] Wet clutches are typically used in automotive applications, such as dual clutch drivetrains. However, wet clutch assemblies generally result in inefficiencies, for example, due to churning losses caused by friction between lubricating oil and moving components in the assembly. Therefore, there is a need to provide clutch cooling that improves efficiency. [0004] Dual clutch powertrains generally include a pair of clutches, each clutch having a drive plate and a pressure plate for sandwiching a friction plate therebet...

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): F16D13/72F16D21/06
CPCB60T1/062B60T7/122F16D49/04
Inventor J·C·威尔斯L·斯季斯
Owner RICARDO UK LTD