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

Variable stroke valve train for internal combustion engines

A valve train, internal combustion engine technology, used in internal combustion piston engines, combustion engines, machines/engines, etc.

Inactive Publication Date: 2017-04-12
SCHAEFFLER TECH AG & CO KG
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that with this valve train no additional valve travel can be achieved in the cam base circle, for example for internal exhaust gas recirculation

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 stroke valve train for internal combustion engines
  • Variable stroke valve train for internal combustion engines
  • Variable stroke valve train for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 The full variable valve mechanism 1 of the internal combustion engine is shown. From the basic structure and function, it is equivalent to the BMW electronic valve control system.

[0014] The valve mechanism 1 is composed of a long rocker 2. The long rocker 2 has an integrally coupled transmission surface 4 on the lower end 3, and the transmission surface 4 is composed of a zero-stroke track 10 and a stroke track 11 following the zero-stroke track along the pivoting direction of the lever, and the transmission The face 4 is in contact with a valve opener 12, which exists as a rocker arm and rests on a support element not shown in the area shown on the right here.

[0015] Observed from the stroke track 11, the aforementioned zero stroke track 10 successively has a switch-on zero-stroke section 18, a cut-off zero-stroke section 19 and a remaining zero-stroke section 20, wherein, according to figure 1 The zero-stroke segment 18 is turned on to contact the valve opene...

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 proposes a valve train with variable stroke of an internal combustion engine. A variable-stroke valve train (1) for an internal combustion engine with internal combustion has a rocker (2) with a transmission surface (4) at one end (3) and a mating surface in the middle area (5) (6) and on the other end (7) has a support device and a contact device, the transmission surface is constituted by a zero-stroke track (10) and a stroke track (11) following the zero-stroke track in the pivoting direction of the rod, and is connected with the valve opening contact with the valve (12), the mating surface is loaded by at least one travel cam (13), the support device (8) is guided on the chute track (14), the contact device (9) is slid along by the adjustment device (15) in order to adjust the valve stroke The direction of the groove track is loaded, and wherein the valve train is provided with an additional valve stroke device active in the vicinity of the rocker and selectively switchable for obtaining an additional valve stroke when the base circle (17) of the stroke cam passes (16).

Description

Technical field [0001] A variable-stroke valve train for an internal combustion engine with internal combustion, which has a rocker with a transmission surface on one end, a mating surface in the middle area, and a supporting device and contact on the other end Device, the transmission surface is composed of a zero-stroke track and a stroke track following the zero-stroke track along the pivoting direction of the rod, and is in contact with the valve opener, the mating surface is loaded by at least one stroke cam, wherein the supporting device is on the chute track The upper guide, and wherein the contact device is loaded by the adjusting device along the direction of the chute rail in order to adjust the valve stroke. Background technique [0002] This valve train is described in DE 102 35 402 A1 figure 1 It has been shown in and BMW uses it as a full-stroke variable valve control device under the term "Valvetronic". The disadvantage is that with this valve mechanism, additiona...

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): F01L13/00
CPCF01L1/34F01L2820/032F02D13/0273F02D2041/001F02M26/01Y02T10/12
Inventor 沃尔夫冈·克里斯特根迈克尔·舍贝尔
Owner SCHAEFFLER TECH AG & CO KG
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