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

Camshaft

a technology of camshafts and camshafts, applied in the direction of valve drives, valve details, valve arrangements, etc., can solve the problem of more complex keeping a plurality of function elements, and achieve the effect of simplifying production

Inactive Publication Date: 2014-06-19
MAHLE INT GMBH
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about improving a camshaft design by combining multiple function elements into a single function device. This simplifies production and reduces weight. The function device can be joined to the camshaft using a shaft-hub connection, which allows for higher torque transmission and simplifies assembly. The function device can be formed in one piece or connected individually, and positioning aids can be used to align the function elements in the correct angular position. Additionally, the invention includes the use of an Oldham coupling for transmitting torque between two parallel shafts, which compensates for minor offsets and allows for greater production tolerances.

Problems solved by technology

When joining camshafts in a cover module, an additional aggravating fact is that the space is limited, so that it is even more complex to keep a plurality of function elements to join a plug from the outside.

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
  • Camshaft
  • Camshaft
  • Camshaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019]According to the FIGS. 1-3, a camshaft 1 of an internal combustion engine 2 according to the invention comprises at least one function device 3 that is connected to the camshaft 1 via a shaft-hub connection, in particular via a press fit connection, which is put together of at least two different function elements 4. The individual function elements 4 in this case fulfil different functions and are merely combined in the common function device 3 to simplify the assembly. At least one function element 4 in this case can for example be formed as a gear wheel 5, in particular as a coupling gear wheel, as a cam, as a pump actuating device, as an encoder wheel 6, as a belt pulley, as a coupling 7, in particular as an Oldham coupling, or as a chain wheel 5′. The function device 3 represented according to FIG. 1 thus has three function elements 4, namely the coupling 7, the chain wheel 5′ or gear wheel 5 as well as the encoder wheel 6. By combining a plurality of function elements 4 ...

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 camshaft of an internal combustion engine may include at least one function device connected therewith via a shaft-hub connection. The function device may include at least two different function elements each operable for different function

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to German Patent Application DE 10 2012 223 811.5 filed Dec. 19, 2012, which is hereby incorporated by reference in its entirety.TECHNICAL FIELD[0002]The present invention relates to a camshaft of an internal combustion engine having at least one function device connected therewith via a shaft-hub connection according to the preamble of claim 1. The invention additionally relates to a function device for such a camshaft and to an internal combustion engine having at least one such camshaft.BACKGROUND[0003]Generic camshafts are thoroughly known, just as connecting function elements to such camshafts, for example via a thermal joining fit. However, function devices such as for example gear wheels, drive wheels, cams, pump actuating devices, such as for example pump cams for a high-pressure pump or an Oldham coupling for the rotary connection of vacuum or oil pumps are connected to the camshaft by way of pres...

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): F01L1/047
CPCF01L2001/0471F01L2001/0475F01L1/047
Inventor GERLINGEN, DAUTELFLENDER, THOMASMENONNA, ANTONIOSTEICHELE, STEFAN
Owner MAHLE INT GMBH
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