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

Device for determining a gas mass flow rate, and method for re-calibrating such a device

A gas mass flow, recalibration technology, applied in the direction of measuring flow/mass flow, applying thermal effect to detect fluid flow, testing/calibrating devices, etc., can solve problems such as measurement value deviation

Inactive Publication Date: 2014-11-05
PIERBURG GMBH & CO KG NEUSS
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Despite the possibility of direction or pulse recognition and deposit burnout, after longer operating times there are measured value deviations due to external influences on the sensor, such as deposit formation

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 determining a gas mass flow rate, and method for re-calibrating such a device
  • Device for determining a gas mass flow rate, and method for re-calibrating such a device
  • Device for determining a gas mass flow rate, and method for re-calibrating such a device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The device according to the invention for determining the mass flow is arranged in a channel 10 through which the exhaust gas flows and which is delimited by a wall 12 . An opening 16 extending perpendicularly to the channel axis 14 is formed in the wall 12 and through which a housing 18 of a device for determining the exhaust gas mass flow in the channel 10 extends.

[0019] A first sensor unit 20 and a second sensor unit 22 protrude from the housing 18 into the channel 10, the first sensor unit 20 and the second sensor unit 22 being formed in most cases by a multilayer ceramic matrix 24, 26, in which case Thin-film platinum resistors and printed conductors 28 are provided on the base body in a known manner.

[0020] The sensor units 20 , 22 are here generally arranged parallel to one another in the main flow direction of the exhaust gas one above the other, wherein the main extension direction of the individual sensor units 20 , 22 is likewise located in the channel 1...

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

Devices for determining a gas mass flow rate, which comprise two sensor units with a first sensor unit (20) provided with at least one first temperature measuring element (40; 42) and a first heating element (44), and a second sensor unit (22) provided with a second temperature measuring element (36) and a second heating element (50), and a control unit (52), by means of which the at least one temperature measuring element (40; 42) can be adjusted to controlled excess temperatures, are known. In order to obtain correct measurement values despite the occurrence of deposits that cannot be burned off, the control unit (52) is interconnected with the heating element (50) such that the heating element (50) of the second sensor unit (22) can be adjusted to a controlled excess temperature.

Description

technical field [0001] The invention relates to a device for determining a gas mass flow, which has a first sensor unit, a second sensor unit and a control unit, the first sensor unit has at least one first temperature measuring element and a first heating element, the The second sensor unit has a second temperature measuring element and a second heating element, at least one temperature measuring element is adjusted to a controlled overheating temperature by means of a control unit, the invention also relates to a recalibration for determining the gas mass flow The method of the device, wherein the first heating element of the first sensor unit is adjusted to a controlled overheating temperature, and the mass flow of heat dissipation from the at least one heating element of the first sensor unit is then calculated from the temperature of the temperature measuring element. Background technique [0002] Devices for gas mass flow measurement are first known from the region of ...

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): G01F25/00G01F1/684G01F1/692
CPCG01F1/6965G01F25/0007G01F1/72G01F1/692G01F1/698G01F25/10G01F1/68G01F25/00
Inventor K.沃贝克L.鲍梅斯特D.卡玛丽斯M.施拉梅克
Owner PIERBURG GMBH & CO KG NEUSS
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