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

Method for the early opening of a discharge valve for a turbocharged heat engine

A heat engine, turbocharger technology, applied in the computer field, to achieve the effect of low risk and noise elimination

Active Publication Date: 2018-09-28
PEZHO SITROEN AUTOMOBILS SA
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the conventional control method of the exhaust valve 14, in some engine-vehicle combinations there is in some cases a surge phenomenon accompanied by a noise perceivable by the driver

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 for the early opening of a discharge valve for a turbocharged heat engine
  • Method for the early opening of a discharge valve for a turbocharged heat engine
  • Method for the early opening of a discharge valve for a turbocharged heat engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Identical, similar or analogous elements in different figures retain the same reference signs.

[0040] Such as Figure 7 As shown, the method according to the invention essentially comprises a critical situation identification step 100 and a control step 105 for opening the exhaust valve 14 early.

[0041] Thus, in step 100 the method identifies a critical situation where conventional control of the exhaust valve 14 is insufficient to avoid surge. For example, for severe load transients (such as a sudden foot lift from full load), in some systems surge is often observed at the onset of the transient because the exhaust valve 14 is not fully open. For example, this may be due to the exhaust circuit 13 or due to the waiting time between the control and implementation of the maximum opening of the exhaust valve 14 . On the other hand, for less sudden load transients, in this same system, if the conventional strategy of controlling the exhaust valve 14 is used, the waiti...

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 mainly to a method for controlling the early opening of a discharge valve associated with a discharge conduit, said discharge conduit having an upstream end arranged upstream ofa heat engine compressor and a downstream end arranged downstream of said compressor, characterised in that said method comprises: a step (100) of detecting a time-sensitive case that may cause a pumping phenomenon; and a step (105) of controlling early opening of said discharge valve following the detection of the time-sensitive case.

Description

technical field [0001] The invention relates to a method for early opening of an exhaust valve of a heat engine equipped with a turbocharger and to a computer for carrying out the method. Background technique [0002] A known, figure 1 The air circuit of the heat engine shown in includes a turbocharger 2 comprising a supercharger 3 and a turbine 4 . The supercharger 3 allows the compression of the incoming air to optimize the charging of the cylinders of the engine 5 . To this end, the supercharger 3 is arranged on the intake pipe 8 upstream of the engine 5 . The flow of exhaust gases rotationally drives a turbine 4 arranged on the exhaust pipe 9 which then rotationally drives the supercharger 3 via a coupling. [0003] The supercharger 3 is defined by its own champ compresseur. The boost fields represent the compression ratio R (corresponding to the ratio of the downstream air pressure Pav to the upstream air pressure Pam of the supercharger 3 ) as a function of the vol...

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): F02B37/16F02B39/16F02D41/00F02B37/12
CPCF02B37/16F02B39/16F02B2037/125F02D41/0007F02D41/045F02D41/10F02D2200/602Y02T10/12
Inventor 克莱门特·波利
Owner PEZHO SITROEN AUTOMOBILS SA
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