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

Method and device for improving the gear-changing quality of a motor vehicle having an automatic transmission

一种自动变速器、机动车的技术，应用在机械设备、带有齿的元件、传动装置控制等方向，能够解决适配过程费时等问题

Active Publication Date: 2019-04-26
BAYERISCHE MOTOREN WERKE AG
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is already known that such an adaptation process is time-consuming

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
  • Method and device for improving the gear-changing quality of a motor vehicle having an automatic transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A hybrid vehicle is schematically depicted in the drawing, which has an automatic transmission 1 , an electric motor (electric motor drive) 2 and an internal combustion engine (internal combustion engine drive) 3 . Between the electric motor 2 and the internal combustion engine 3 there is a drive clutch 4 . 1 as a first example of a shift element to be adapted. In addition, there is a starting clutch 4.2 in the automatic transmission 1 as the second shift element to be adapted. A third example of a switching element to be adapted (not described here) could also be an electric oil pump for filling the clutch. Electronic control unit 6 controls hydraulic oil pump 5 in a defined manner in order to carry out a known filling pressure adaptation process by applying filling pressure to switching elements 4 . 1 and 4 . 2 . Especially in the case of clutches as shift elements, the correct filling pressure for reaching the starting point of engagement (the so-called contact poin...

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 aim of the invention is to improve the gear-changing quality of a motor vehicle having an automatic transmission, in which filling pressure adaptation processes are carried out by means of an electronic control device by predefined activation of an oil pump and selected hydraulic switching elements. This aim is achieved, according to the invention, in that a minimum time margin between selected or all of the individual adaptation processes is predefined by means of the control device, wherein parallel adaptation processes are prevented.

Description

technical field [0001] The invention relates to a method and a device for improving the shifting quality of a motor vehicle with an automatic transmission. Background technique [0002] For example, DE 10 2008 000 015 A1 discloses a method for improving the shifting quality of a motor vehicle with an automatic transmission, which prescribes a filling pressure adaptation process, in particular for a hydraulic shifting element such as a clutch that has just been switched off. It is known here that such an adaptation process is time-consuming. Contents of the invention [0003] The object of the present invention is to optimize the filling pressure adaptation process with respect to the overall service life of the motor vehicle. [0004] According to the invention, this object is achieved by the features of the independent claims, while preferred developments of the invention are described in the dependent claims. [0005] In order to improve the shifting quality of a motor...

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): F16H61/06
CPCF16H61/06F16H61/061F16H61/684F16H2061/0087F16H2061/062
Inventor M·普菲斯特雷尔
Owner BAYERISCHE MOTOREN WERKE AG
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