Filling level sensor for detecting e.g. filling level height of urea solution in reducing agent container, for selective catalytic reduction system of motor car, has electrodes connected via resistor to detect height and conductance,申请号DE20101020842-传众专利搜索

Filling level sensor for detecting e.g. filling level height of urea solution in reducing agent container, for selective catalytic reduction system of motor car, has electrodes connected via resistor to detect height and conductance

申请公布号：DE102010020842(A1)

申请号：DE20101020842

申请日期：2010.05.18

申请公布日期：2011.11.24

申请人：

CONTINENTAL AUTOMOTIVE GMBH

发明人：BAUER, PETER;WEIGL, MANFRED

分类号：G01F23/24;F01N3/10;G01N27/02

主分类号：G01F23/24

摘要：<p>#CMT# #/CMT# The sensor (1) has electrodes (5) arranged adjacent to each other in a longitudinal direction of other electrodes (3). The former electrodes are arranged opposite to the latter electrodes. The former electrodes are electrically connected with each other via an electrical resistor (7), so that filling level height and conductance of fluid are detected via the sensor. The resistor and the former and latter electrodes are coordinated with each other such that measurable electrical resistance of about 10 kilo ohm is obtained, during immersion of the sensor in the fluid. #CMT# : #/CMT# An independent claim is also included for a method for recognizing a filling level. #CMT#USE : #/CMT# Filling level sensor for detecting conductivity and filling level height of electrical conductive fluid e.g. water, reducing agent i.e. AdBlue(RTM: Diesel emission fluid) and urea solution, in a tank or container i.e. reducing agent container, for a selective catalytic reduction (SCR)-system of a motor car (all claimed). #CMT#ADVANTAGE : #/CMT# The electrodes are electrically connected with each other via the electrical resistor, thus detecting the filling level height and conductance of the fluid via the sensor in an accurate manner without requiring additional pipelines and devices, and hence preventing false refueling of the container. The sensor avoids occurrence of impedance short circuit, during immersion of the sensor in the fluid. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a filling level sensor. 1 : Filling level sensor 3, 5 : Electrodes 7 : Electrical resistor.</p>