System and method for resetting vehicle engine oil sensors

• US 6,508,100 B2
• Filed: 05/24/2001
• Issued: 01/21/2003
• Est. Priority Date: 05/24/2001
• Status: Expired due to Fees

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Berndorfer, Axel H
• Primary Examiner(s): Williams, Hezron
• Assistant Examiner(s): Garber, Charles D.
• Application Number:
  US09/864,759
• Publication Number:
  US 20020174705A1
• Time in Patent Office: 607 Days
• Field of Search: 73/10.2, 73/17.3, 702/100
• US Class Current: 73/1.02
• CPC Class Codes: F01M 11/10 Indicating devices; Other safety devices
• CPC Class Codes: G01N 33/2888 Lubricating oil characteristics, e.g. deterioration lubricating properties G01N33/30

Abstract

A method for resetting vehicle engine oil sensors includes determining whether a vehicle hood is opened. If the hood is opened, an oil sensor disposed in an oil pan is awakened and instructed to monitor the oil level. If, while the hood is opened, an oil parameter is altered a predetermined amount, the sensor and a corresponding output device are reset.

Claims

1. A method for resetting a vehicle engine oil sensor, comprising the acts of:

determining whether a switch indicative of vehicle servicing is opened; and

if so, alerting the sensor to wake for a predetermined time period.

2. The method of claim 1, further comprising the acts of:

monitoring an oil parameter; and

resetting the sensor at least partially based on the monitoring act.

3. The method of claim 2, further comprising the act of:

resetting an oil level/condition output device.

4. The method of claim 1, wherein the sensor cycles between a sleep mode and an awake mode and the method further comprises the act of:

if the switch is opened, increasing the frequency of the cycle.

5. The method of claim 1, further comprising the acts of:

monitoring an oil parameter; and

resetting an oil condition algorithm.

6. The method of claim 1, further comprising the act of:

determining whether the oil parameter has altered a predetermined amount; and

resetting the sensor at least partially based on thereon.

7. The method of claim 6, further comprising the act of:

resetting an oil level/condition output device.

8. The method of claim 7 wherein the oil level/condition output device is:

an add-oil indicator, a change oil indicator, an oil level indicator, or an oil condition indicator.

9. The method of claim 6, wherein the oil parameter is an oil level.

10. The method of claim 6, wherein the oil parameter is an oil condition parameter.

11. The method of claim 10, wherein the oil condition parameter is:

an oil dielectric value, an oil conductivity, an oil resistivity, an oil permittivity, an oil viscosity, or an oil capacitance.

12. The method of claim 1, wherein the switch is a hood switch that indicates when a vehicle hood is opened.

13. The method of claim 1, wherein the switch is an oil fill tube switch that indicates when an oil fill tube is opened.

14. A system for resetting a vehicle engine oil sensor comprising:

a vehicle and an oil pan;

an oil sensor disposed in the oil pan such that it communicates with engine oil;

a switch within the vehicle, the switch indicating when the vehicle is serviced; and

a microprocessor communicating with the oil sensor and the switch, the microprocessor including a program for determining when the switch is opened, the program including logic means for alerting the sensor to wake if the switch is opened.

15. The system of claim 14, wherein the program further comprises:

logic means for monitoring an oil parameter;

logic means for resetting the sensor at least partially in response to the monitoring logic means.

16. The system of claim 15, wherein the program further comprises:

logic means for resetting an engine oil level/condition output device.

17. The system of claim 14, wherein the program further comprises:

logic means for determining whether the oil parameter has altered a predetermined amount; and

logic means for resetting the sensor at least partially based on thereon.

18. The system of claim 17, wherein the program further comprises:

logic means for resetting an oil level/condition output device.

19. The system of claim 18, wherein the oil level/condition output device is:

an add-oil indicator, a change oil indicator, an oil level indicator, or an oil condition indicator.

20. The system of claim 17, wherein the oil parameter is an oil level.

21. The system of claim 17, wherein the oil parameter is an oil condition parameter.

22. The system of claim 21, wherein the oil condition parameter is:

an oil dielectric value, an oil conductivity, an oil resistivity, an oil permittivity, an oil viscosity, or an oil capacitance.

23. The system of claim 14, wherein the switch is a hood switch that indicates when a vehicle hood is opened.

24. The method of claim 14, wherein the switch is an oil fill tube switch that indicates when an oil fill tube is opened.

25. The system of claim 14, wherein the switch communicates directly with the sensor.

26. The system of claim 14, wherein the sensor cycles between a sleep mode and an awake mode and the program further includes:

logic means for increasing the frequency of the cycle if the switch is opened.

27. The system of claim 14, wherein the program further comprises:

logic means for monitoring an oil parameter; and

logic means for resetting an oil condition algorithm.