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

Variable valve control device for internal combustion engine

A technology for controlling equipment and internal combustion engines, applied in mechanical equipment, engine components, machines/engines, etc.

Inactive Publication Date: 2020-03-10
AVL LIST GMBH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantageously, the actuation of the trigger device requires an additional control action

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
  • Variable valve control device for internal combustion engine
  • Variable valve control device for internal combustion engine
  • Variable valve control device for internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The drawing shows a variable valve control device 1 for an internal combustion engine with at least one camshaft 3 mounted rotatably about a camshaft axis 2, wherein there are at least two cams 5, 6 and cam The cam device 4 of the tracks 7, 8 is connected to the camshaft 3 such that the cam device 4 is non-rotatable but axially displaceable. In the present exemplary embodiment, the cam device 4 acts on a transmission element 30 which is configured, for example, as a lift transmission device 31 , such as a rolling body of a valve stem, which actuates at least one converter of the internal combustion engine. Valves (not shown in more detail in the drawings).

[0025] One of the cam tracks 7 , 8 can be alternately activated or deactivated via the control device 10 .

[0026] The control device 10 has at least one positioning element 11 , which is guided axially within the camshaft 3 , to which a drive portion 12 formed by a radial (screw) stud is fixedly connected. The p...

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 variable valve control device (1) for internal combustion engines of the reciprocating-piston design having at least one gas exchange valve, which can be actuated by a camshaft (3) by means of a cam device (4) that is connected to the camshaft (3) for conjoint rotation and that has at least two different cam tracks (7, 8), which camshaft is supported in such a way that the camshaft can be rotated about a camshaft axis (2), wherein, selectively, one of the cam tracks (7, 8) can be activated and at least one other cam track (8, 7) can be deactivated by means of a control device (10), and wherein the control device (10) has at least one control element (11), which is guided axially, in particular within the camshaft, and by which at least one cam device (4) that is supported on the camshaft (3) for conjoint rotation but axially movably and that has at least two different cam tracks (7, 8) can be adjusted by means of at least one driving piece (12). In order to enable reliable and fail-safe variable valve actuation in the simplest possible manner, at least one blocking element (20) is provided for blocking and releasing the axial adjustment motion of the cam device (4), wherein the blocking element (20) has a control stud (21) fixedly connected to the cam device (4) and a—preferably stationary—control disk (22) arranged coaxial to the camshaft (3), wherein the control disk (22) has, in at least one angular region, at least one control opening (25) for receiving the control stud (21).

Description

technical field [0001] The invention relates to a variable valve control device for a reciprocating piston internal combustion engine comprising at least one gas exchange valve actuatable by means of a camshaft mounted so that it can be actuated via a cam device Rotating about a camshaft axis, said cam device is non-rotatably connected to the camshaft and has at least two different cam tracks, wherein, by means of a control device, it is possible to alternately activate one cam track and deactivate at least the other Cam track, wherein the control device has at least one positioning element, which is guided axially, in particular within the camshaft, and by which the at least one cam device is adjusted by means of at least one drive, wherein the The cam arrangement is mounted non-rotatably but axially displaceable on the camshaft and has at least two distinct cam tracks. Background technique [0002] A valve drive for an internal combustion engine is known from DE 100 9520 ...

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): F01L1/047F01L13/00
CPCF01L1/047F01L13/0036F01L2001/0473F01L2013/0052
Inventor C·哈勃曼H·米尔德-图扎
Owner AVL LIST GMBH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com