IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0664037
(2004-09-28)
|
등록번호 |
US-7675405
(2010-04-21)
|
우선권정보 |
DE-10 2004 047 071(2004-09-28) |
국제출원번호 |
PCT/EP2005/054284
(2004-09-28)
|
§371/§102 date |
20070328
(20070328)
|
국제공개번호 |
WO06/034937
(2006-04-06)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Siemens Aktiengesellschaft
|
대리인 / 주소 |
Cohen Pontani Lieberman & Pavane LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
6 |
초록
▼
Disclosed is a method and device for testing the measuring value of at least one filling level sensor arranged in a fuel tank. A plurality of measurements are taken by the filling level sensors and are each compared with a physical variable to determine whether the measurements are plausible. If, ba
Disclosed is a method and device for testing the measuring value of at least one filling level sensor arranged in a fuel tank. A plurality of measurements are taken by the filling level sensors and are each compared with a physical variable to determine whether the measurements are plausible. If, based on the comparison, the measurements from the sensors are not plausible, a warning signal is fed to a warning device and a warning information item is triggered by the warning device.
대표청구항
▼
The invention claimed is: 1. A method for checking for errors in a measured value or a plurality of measured values obtained by a plurality of filling level sensors arranged in a fuel tank of a motor vehicle, comprising: sensing, at each of said plural filling level sensors, measured values of a pl
The invention claimed is: 1. A method for checking for errors in a measured value or a plurality of measured values obtained by a plurality of filling level sensors arranged in a fuel tank of a motor vehicle, comprising: sensing, at each of said plural filling level sensors, measured values of a plurality of measurements; comparing, at a computer unit of the motor vehicle, a sum of said plural measured values with a further physical variable for plausibility; and providing a warning signal to a warning device and triggering a warning information item by the warning device if a sum of said plural measured values is not plausible. 2. The method as claimed in claim 1, wherein each of said plural measurements occurs within a specific time period. 3. The method as claimed in claim 2, wherein each of said plural measurements is triggered after expiry of a specific operating time of an engine of the motor vehicle. 4. The method as claimed in claim 2, wherein each of said plural measurements is triggered by a specific operating function of the motor vehicle. 5. The method as claimed in claim 4, wherein the specific operating function is switching off an ignition of the motor vehicle or an idling mode of the engine of the motor vehicle. 6. The method as claimed in claim 1, wherein when the fuel tank includes a plurality of chambers, respective measured values of each of said plural filling level sensors which are arranged in said plural chambers are summed and the sum of said respective measured values is compared with the further physical variable to determine plausibility of said plural measured values. 7. The method as claimed in claim 1, wherein the further physical variable is a value of a quantity of fuel which is extracted from the fuel tank by a fuel pump and which, for determining the plausibility of said plural measured values, yields an approximately constant value when added to the measured value or said plural measured values of each of said plural filling level sensors for at least said plural measurements. 8. The method as claimed in claim 1, wherein the further physical variable is a value of a quantity of fuel which is injected into an engine of the motor vehicle by an injection system and which, for determining the plausibility of said plural measured values, yields an approximately constant value when added to the measured value or said plural measured values of each of said plural filling level sensors for at least said plural measurements. 9. The method as claimed in claim 1, wherein the further physical variable is one of the measured value of a measurement and said measured values of said plural measurements which, for determining the plausibility of said plural measured values, yield approximately constant values when compared with one another. 10. The method as claimed in claim 1, wherein the warning information item is at least one of a visual and an audible warning information item. 11. The method as claimed in claim 10, wherein the warning signal triggers a display of an empty fuel tank indication on a filling level display of the motor vehicle. 12. The method as claimed in claim 10, wherein the warning signal switches on a fault information display. 13. A device for checking for errors in a measured value or a plurality of measured values, comprising: a plurality of filling level sensors arranged in a fuel tank of a motor vehicle, the measured values of each of said plural filling level sensors being summed together and supplied to a computer unit and compared with one or more measured values which are determined previously, the computer unit being operable to generate a warning signal if the summed measured value of each of said plural filling level sensors deviates from the previously determined one or more measured values. 14. The device as claimed in claim 13, wherein two filling level sensors are arranged in the fuel tank, the measured values of said two filling level sensors being supplied to the computer unit and summed by the computer unit to form a measured value sum, and being compared with the measured value sum of one or more previously determined measured value sums, the computer unit being operable to generate a warning signal if the measured value sum deviates from the previously determined measured value sums. 15. The device as claimed in claim 14, wherein the computer unit is configured to actuate a filling level display which is configured to display a filling level corresponding to the measured value sum. 16. The device as claimed in claim 15, further comprising a fault information display which is actuatable by the warning signal. 17. The device as claimed in claim 15, wherein the filling level display is actuatable by the warning signal. 18. The device as claimed in claim 14, wherein the fuel tank includes a plurality of fuel chambers, at least one filling level sensor being arranged in each of said plural fuel chambers. 19. The device as claimed in claim 18, wherein one of said plural chambers is a main chamber and another of said plural chambers is a secondary chamber, a fuel pump by which fuel is deliverable to an internal combustion engine being arranged in the main chamber. 20. The device as claimed in claim 19, wherein pumps by which fuel is deliverable from the secondary chamber into the main chamber are arranged in the secondary chamber. 21. The device as claimed in claim 20, wherein the pumps are suction jet pumps which are driveable by a branch of a delivery current of the fuel pump. 22. The device as claimed in claim 19, wherein the fuel pump is controllable by the computer unit in one of an open-loop and closed-loop manner.
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