System and method for measuring oil condition in large engines

• US 20030145647A1
• Filed: 02/04/2002
• Published: 08/07/2003
• Est. Priority Date: 02/04/2002
• Status: Active Grant

• Current Assignee: Delphi Technologies, Inc. (Aptiv PLC)
• Original Assignee: Delphi Technologies, Inc. (Aptiv PLC)
• Inventors: Ismail, Keith N., Thomson, Steven Douglas, Lecea, Oscar Alfonso
• Granted Patent: US 6,750,763 B2
• Time in Patent Office: Days
• US Class Current: 73/53.01
• CPC Class Codes: G01N 33/2888 Lubricating oil characteristics, e.g. deterioration lubricating properties G01N33/30

Abstract

A system for measuring oil condition in large engines includes a bypass valve that is installed in a lubrication system along a fluid line between an oil pan and an engine. The bypass valve communicates with a measurement chamber and when energized by a control module, the bypass valve diverts oil from the lubrication system to the measurement chamber. An oil condition sensor is disposed within the measurement chamber and is used to determine the condition of the oil that is diverted to the chamber. After the condition of the oil is determined, the bypass valve is energized to release the oil from the measurement chamber back into the lubrication system.

Claims

1. A system for determining oil condition in a vehicle driven by an engine that is in communication with an oil pan, comprising:

at least one engine;

at least one oil pan;

at least one oil pump in communication with the engine and the oil pan;

at least one oil measurement chamber in communication with the engine; and

at least one bypass valve installed between the engine and the oil pan, the bypass valve being energizable to divert oil to the measurement chamber where the condition of the oil is determined.

2. The system of claim 1, further comprising:

an oil condition sensor disposed in the measurement chamber.

3. The system of claim 2, further comprising:

a control module electrically connected to the bypass valve and the oil condition sensor, the control module sending a signal to the bypass valve to cause the bypass valve to divert oil to the measurement chamber, the control module receiving a signal from the oil condition sensor representing the condition of the oil.

4. The system of claim 3, further comprising:

a warning device receiving a signal from the control module when the condition of the oil falls outside a predetermined operating range.

5. The system of claim 1, further comprising:

at least one oil cooler installed between the bypass valve and the measurement chamber.

6. The system of claim 1, further comprising:

at least one oil heater installed between the bypass valve and the measurement chamber.

7. A method for determining oil condition adapted for use in a vehicle driven by an engine that is in communication with an oil pan, comprising:

providing a measurement chamber in fluid communication with engine;

providing a bypass valve between the engine and the oil pan, the bypass valve being energizable to divert oil to the measurement chamber; and

determining the condition of the oil diverted to the measurement chamber.

8. The method of claim 7, wherein an oil condition sensor is installed within the measurement chamber.

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

cooling the oil.

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

heating the oil.

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

releasing an oil test additive to the measurement chamber.

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

allowing the oil to pass through a temperature gradient.

13. The method of claim 7, further comprising the acts of:

comparing the condition of the oil to a predetermined operating range; and

based thereon, activating a warning device when the condition of the oil falls outside the predetermined operating range.

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

releasing the oil back into the lubrication system.

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

purging the oil from the measurement chamber.

16. A lubrication system for a vehicle driven by an engine, comprising:

at least one engine;

at least one oil pan;

at least one bypass valve installed in a fluid line between the engine and the oil pan;

at least one measurement chamber in fluid communication with the engine; and

a control module electrically connected to the bypass valve, the control module including logic means for energizing the bypass valve to divert oil to the measurement chamber where the condition of the oil is determined.

17. The system of claim 16, further comprising:

at least one oil condition sensor disposed within the measurement chamber, the oil condition sensor being electrically connected to the control module.

18. The system of claim 16, wherein the control module further includes logic means for receiving a signal representing the oil condition from the oil condition sensor.

19. The system of claim 18, wherein the system further includes a warning device electrically connected to the control module and the control module further includes logic means for activating the warning device when the oil condition falls outside a predetermined operating range.

20. The system of claim 16, wherein the control module further includes logic means for energizing the bypass valve in order to release the oil back into the lubrication system after the oil condition has been determined.

21. The system of claim 16, further comprising:

at least one oil cooler, the control module further including logic means for energizing the oil cooler to cool the oil.

22. The system of claim 16, further comprising:

at least one oil heater, the control module further including logic means for energizing the oil heater to heat the oil.