METHOD AND DEVICE FOR DETECTING THE TANK FILLING LEVEL IN A MOTOR VEHICLE

• US 20130160541A1
• Filed: 12/13/2012
• Published: 06/27/2013
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Deutz AG
• Original Assignee: Deutz AG
• Inventors: MEDINA-SANCHEZ, Gonzalo
• Granted Patent: US 9,389,112 B2
• Time in Patent Office: Days
• US Class Current: 73/305
• CPC Class Codes: G01F 23/22 by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water involving the use of floats G01F23/30
• CPC Class Codes: G01F 23/2962 Measuring transit time of reflected waves
• CPC Class Codes: G01F 23/30 by floats

Abstract

A method for detecting the filling level in a motor vehicle. A device for ascertaining the tank filling level value of moving vehicles, including at least one tank, at least one filling level sensor, at least one control unit and at least one pump.

Claims

1. A device for ascertaining the tank filling level value of moving vehicles, comprising:

at least one tank;

at least one filling level sensor;

at least one control unit; and

at least one pump.

2. The device as recited in claim 1 wherein the filling level sensor is an ultrasonic sensor.

3. The device as recited in claim 1 wherein the filling level sensor includes at least one floating gauge.

4. A method for ascertaining the tank filling level, comprising the following steps:

ascertaining a state space system;

then ascertaining a tank volume value with the aid of a Kalman filter;

ascertaining a tank filling level value; and

subsequent filtering of the tank filling level sensor value.