Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Device for increasing the functional reliability of a hydraulic circuit of a hydraulically operable clutch

A hydraulic circuit and hydraulic operation technology, applied in clutches, fluid-driven clutches, non-mechanical-driven clutches, etc., can solve the problems of complex structure, prone to failure manufacturing, and high cost of pneumatic boosters, and achieve the goal of increasing operation and maintenance costs. Effect

Inactive Publication Date: 2008-03-26
ZF FRIEDRICHSHAFEN AG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the pneumatic supercharger of the device has a complex structure and is prone to failure to a certain extent and is relatively expensive to manufacture.

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
  • Device for increasing the functional reliability of a hydraulic circuit of a hydraulically operable clutch
  • Device for increasing the functional reliability of a hydraulic circuit of a hydraulically operable clutch
  • Device for increasing the functional reliability of a hydraulic circuit of a hydraulically operable clutch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] According to Figure 1, the hydraulic clutch control device with a pneumatic booster mainly includes: a transmitter cylinder 3 with a compensation container 1 and operated by a clutch pedal 2, a booster 4 behind the transmitter cylinder, and a clutch acting on the clutch release mechanism. The separating cylinder 5 and the hydraulic lines 6 and 7 , which create a fluid-tight connection between the transmitter cylinder 3 and the pressure booster 4 and between the pressure booster 4 and the separating cylinder 5 .

[0023] The booster 4 has a pneumatic zone 9 acting on the hydraulic zone 8 and the adjacent hydraulic lines 6 , 7 , which zone can be loaded with compressed gas in the activated state, supplied by an air compressor 10 via the pneumatic line 11 .

[0024] FIG. 2 shows the separating cylinder 5 in an uncontrolled state. The substantially cylindrical housing 12 has a stepped bore 13 in which a primary piston 14 with a sealing ring 15 and a secondary piston 16 with...

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

In order to prevent an unintentional release of the clutch when the vehicle is at a standstill and the parking brake is released, the aim of the invention is to further develop a known device for increasing the functional reliability of a hydraulic circuit of a hydraulic clutch, comprising a pressure reservoir (25) and a release cylinder (5), which has a primary piston (14), a secondary piston (16) and a compensation volume. To this end, a pressure monitoring / supply device (28) is used that determines a reference operating pressure and sets a static pressure that, in the event of system faults, only permits the secondary piston (16) to be displaced such that the contact pressure of the clutch disks against one another is still sufficient to hold the vehicle at a standstill.

Description

technical field [0001] The invention relates to a device for increasing the functional reliability of a hydraulic circuit of a hydraulically actuated clutch. Background technique [0002] The purpose of increasing the functional reliability of the hydraulic circuit of the hydraulically operated clutch is also to maintain the current shifting state of the clutch and to achieve a defined transition characteristic between the shifting states, which is repeatable and acceptable to the driver of the vehicle concerned. Effective control. [0003] To meet these requirements, superchargers are known from the prior art, which provide sufficient feedback to the clutch pedal, so that the engagement and disengagement processes can be tailored to the prevailing situation by the driver. In this case it is all the more important to implement a backlash and wear compensation in order to ensure a coordinated operating characteristic over the service life of the clutch. [0004] Separating ...

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 Patents(China)
IPC IPC(8): F16D48/06F16D25/08F16D48/02
CPCF16D48/066F16D25/088F16D48/02F16D25/14F16D2048/0275F16D2048/0203F16D2048/0212F16D2500/1024F16D2500/50825F16D2500/5104F16D2500/5114F16D2500/70406
Inventor 托马斯·克诺布劳赫克里斯托夫·鲁哈特奥托·埃布纳克劳斯·施魏格尔马蒂亚斯·温克尔安德烈亚斯·施文格尔马库斯·甘索尔
Owner ZF FRIEDRICHSHAFEN AG
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
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