Operating liquid container comprising built-in system for detecting filling level

Abstract

The invention relates to an operating liquid container (1), the inner space (2) of which is defined by a covering wall (30), a bottom wall (10) and a side wall (20) connecting the bottom wall (10) tothe covering wall (30), the container comprising: a reference capacitor (70) comprising a first electrode (71) and a second electrode (72), which both extend parallel to the bottom wall (10); a measuring capacitor (60) comprising a first electrode (61) and a second electrode (62), which both have a length extension (L), a width extension (B) and a depth extension, and both extend parallel to the side wall (20) in such a way that the length extensions (L) of the first electrode (61) and the second electrode (62) extend from the bottom wall (10) towards the covering wall (30); and an evaluationdevice (80) electrically connecting to the reference capacitor (70) and the measuring capacitor (60), for determining a filling level of the operating liquid container (1) by means of measuring signals determined by the reference capacitor (70) and the measuring capacitor (60). The operating liquid container (1) is characterised by the following features: the first electrode (71) and the second electrode (72) of the reference capacitor are embedded in the bottom wall (10); and the first electrode (61) and the second electrode (62) of the measuring capacitor (60) are embedded in the side wall (20).

Description

technical field [0001] The invention relates to a working fluid container with a measuring system for determining the fill level of the working fluid container. Background technique [0002] In the following, reference will also be made to a working fluid container designed as a urea container designed for use in a motor vehicle. The working fluid container according to the invention is in particular, but not exclusively, a urea container for motor vehicles, a water container for storing water to be injected into the combustion chamber of an internal combustion engine, a windshield washer fluid container, a fuel tank ( for gasoline or diesel fuel), motor oil containers, other liquid containers or additive containers for motor vehicles. Containers of the type initially described are often produced using extrusion blow molding, with HDPE (high density polyethylene) being particularly suitable for producing extrusion blow molded containers. Corresponding working fluid contain...

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Problems solved by technology

Therefore, ice cubes can hit and damage the lever sensor during vehicle operation

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