Method and apparatus for determining available quantity of substance in container

A container, substance technology, applied in the field of quantity at your disposal

Active Publication Date: 2014-08-13
VOLKSWAGEN AG
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this results in considerable costs for other heating elements and additional energy is required for operating the heating elements during operation of the vehicle.

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 and apparatus for determining available quantity of substance in container
  • Method and apparatus for determining available quantity of substance in container
  • Method and apparatus for determining available quantity of substance in container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] figure 1 A vehicle 1 is shown with an internal combustion engine 2 and an exhaust gas line 3 . The internal combustion engine 2 may comprise, for example, a diesel engine. In order to reduce the emission of nitrogen oxides, a selective catalytic reduction method (English: Selective Catalytic Reduction, SCR) is used. The ammonia necessary for the SCR method is not used directly (ie in pure form), but rather as an aqueous urea solution (which is also called AdBlue). An aqueous urea solution, also referred to as aqueous urea solution (HWL), is injected into the exhaust line 3 upstream of the SCR catalytic converter, for example by means of a metering pump or an injector. The aqueous urea solution is stored in a tank 4 of the vehicle 1 and is led via a line 5 to the exhaust line 3 . Since the aqueous urea solution can freeze at temperatures below −11.5° C., at least the subregion 6 of the tank 4 can be heated. However, at very low temperatures a part of the aqueous urea...

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 method and apparatus for determining available quantity of a substance in a container, and specifically relates to a method for determining available quantity of a substance in a container (4). The container (4) can be partially heated such that the substance is at least partially heated to a melting temperature of the substance. In the method, the temperature (T, 34) in the container (4) is detected in this state, i.e. in the state where the container (4) is at least partially heated and is inactive, and a future temperature in the container (4) is estimated depending on the detected temperature (T, 34). The future quantity of the liquid substance in the container (4) is determined depending on the estimated future temperature.

Description

technical field [0001] The invention relates to a method for determining the availability of a substance in a container, in particular to a method for determining an aqueous urea solution in an only partially heatable container at very low temperatures The method of available quantity. Furthermore, the invention relates to a corresponding device for determining the available quantity of a substance in a container. Background technique [0002] Internal combustion engines that are temporarily or mostly operated with a lean air-fuel mixture, such as diesel engines in passenger cars or trucks, generate nitrogen oxides. In order to comply with limit values ​​for nitrogen oxides, so-called selective catalytic reduction methods (English: Selective Catalytic Reduction, SCR) can be used in which nitrogen oxides are reduced by means of additives and catalysts. Additives may include, for example, aqueous urea solutions, which are also identified by the incorporated trade mark AdBlue...

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): F01N3/20F01N3/28
CPCF01N9/00F01N3/10F01N11/00F01N3/208F01N11/002F01N2560/06F01N2610/02F01N2610/10F01N2610/1406Y02A50/20Y02T10/12Y02T10/40
Inventor J.A.B.弗里贝B.维尔德滕N.特姆
Owner VOLKSWAGEN AG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap