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

Device for adjusting the effective length of a connecting rod depending on the supply pressure

A technology of effective length and supply pressure, which is applied in the direction of connecting rod, mechanical equipment, and control lubricant pressure, etc., can solve the problems of slow pressure change of supply pressure, limitation of VCR system efficiency, and impossibility of realization, so as to improve exhaust gas value , Improve the effect of cost reduction and space saving

Active Publication Date: 2020-02-11
IWIS MOTORSYSTEME GMBH & CO KG +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the pressure change of the supply pressure takes place very slowly and short switching times cannot be achieved
Due to this, the efficiency of the VCR system is limited

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 adjusting the effective length of a connecting rod depending on the supply pressure
  • Device for adjusting the effective length of a connecting rod depending on the supply pressure
  • Device for adjusting the effective length of a connecting rod depending on the supply pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] figure 1 An internal combustion engine 1 , for example an Otto engine, is shown schematically. The internal combustion engine 1 has three cylinders 2.1, 2.2 and 2.3 in which a reciprocating piston 3.1, 3.2, 3.3 moves up and down. Furthermore, internal combustion engine 1 includes a crankshaft 4 which is rotatably mounted by means of crankshaft bearings 5.1-5.4. Crankshaft 4 is connected to associated reciprocating pistons 3.1, 3.2 and 3.3 by means of connecting rods 6.1, 6.2 and 6.3, respectively. For each connecting rod 6.1, 6.2 and 6.3, the crankshaft 4 has an eccentrically arranged crankshaft journal 7.1, 7.2 and 7.3. Large connecting rod bores 8.1, 8.2 and 8.3 are respectively supported on associated crankshaft journals 7.1, 7.2 and 7.3. The small connecting rod bores 9.1, 9.2 and 9.3 bear on piston pins 10.1, 10.2 and 10.3 respectively and are thus pivotably connected to the associated reciprocating pistons 3.1, 3.2 and 3.3.

[0039] The crankshaft 4 is provide...

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 device for adjusting the effective length of a connecting rod (6.1, 6.2, 6.3) for an internal combustion engine (1), the device comprising at least one connecting rod (6.1,6.2, 6.3) which has a variable length and which can be locked in at least two length settings, at least one first oil pump (20) for supplying oil to the at least one connecting rod (6.1, 6.2, 6.3) with a variable length, and a control unit (100) which provides for a switchover between the length settings of the connecting rod (6.1, 6.2, 6.3) in the event of a change in the oil supply pressure forthe connecting rod (6.1, 6.2, 6.3). The aim of the invention is to shorten the switching times during a switchover between the length settings of the connecting rod (6.1, 6.2, 6.3). According to the invention, this is achieved in that at least one second oil pump (21) is provided which can be switched on when an oil supply is required for the at least one connecting rod (6.1, 6.2, 6.3) with a variable length or which takes over the oil supply for the at least one connecting rod (6.1, 6.2, 6.3) with a variable length, and the second oil pump (21) supplies a specified delivery flow at the momentof the activation of the oil supply for the connecting rod (6.1, 6.2, 6.3) or at the moment the second oil pump takes over the oil supply for the connecting rod (6.1, 6.2, 6.3). The invention additionally relates to a method for providing such a device for adjusting the effective length of a connecting rod (6.1, 6.2, 6.3).

Description

technical field [0001] The invention relates to a device for adjusting the effective length of a connecting rod for an internal combustion engine, the device comprising: at least one length-adjustable connecting rod lockable in at least two different length positions; at least one first an oil pump for the oil supply of the connecting rod; and a control unit providing switching between length positions of the connecting rod when the oil supply pressure of the connecting rod changes. [0002] The invention also relates to a method for operating such a device. Background technique [0003] Thermal efficiency η of internal combustion engine, especially gasoline engine TH and the compression ratio ε, that is, the ratio of the total volume before compression to the compressed volume (ε=(stroke volume V h + Compression volume V C ) / compressed volume V C )related. As the compression ratio increases, thermal efficiency also increases. The thermal efficiency decreases with incr...

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): F02B75/04
CPCF02B75/045F02D15/02F16C7/06F16C2360/22F16C3/06F01M1/02F01M1/16
Inventor R.贝格尔A.克罗巴特H.佐格尔M.黑勒
Owner IWIS MOTORSYSTEME GMBH & 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