Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for determining the available quantity of a substance in a container

A technology of containers, substances, applied in the field of disposable quantities

Active Publication Date: 2017-06-30
VOLKSWAGEN AG
View PDF9 Cites 0 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 device for determining the available quantity of a substance in a container
  • Method and device for determining the available quantity of a substance in a container
  • Method and device for determining the available quantity of a substance in a 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 method (20) involves detecting (21) a temperature in a container in a state, in which partially heating of the container is inactive. An estimated future temperature is determined (22) in the container depending on the detected temperature, where the estimated future amount of liquid substance is determined (23) in the container in response to the estimated future temperature. An independent claim is included for a device for a vehicle.

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 Patents(China)
IPC IPC(8): F01N3/20F01N3/28
CPCF01N3/208F01N11/002F01N2560/06F01N2610/02F01N2610/10F01N2610/1406Y02A50/20Y02T10/12Y02T10/40
Inventor J.A.B.弗里贝B.维尔德滕N.特姆
Owner VOLKSWAGEN AG