ENGINE COOLANT MONITORING SYSTEM FOR A MACHINE

• US 20170298806A1
• Filed: 04/13/2016
• Published: 10/19/2017
• Est. Priority Date: 04/13/2016
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: DeVENNEY, Thomas J., HUNSICKER, Douglas P.
• Granted Patent: US 10,408,118 B2
• Time in Patent Office: Days
• CPC Class Codes: F01P 11/14 Indicating devices; Other safety devices
• CPC Class Codes: F01P 2025/80 Concentration anti-freeze

Abstract

An engine coolant monitoring system for a machine is disclosed. The engine coolant monitoring system may have a test device configured to test a fluid sample of an engine coolant. The engine coolant monitoring system may also have a database configured to store a test result generated by the test device, the test result including a plurality of characteristics of the fluid sample. In addition, the engine coolant monitoring system may have a controller. The controller may be configured to access a rule-set associated with the engine coolant from the database, the rule-set having criteria associated with the characteristics. The controller may also be configured to label the engine coolant as normal when the characteristics of the fluid sample satisfy the criteria and label the engine coolant as abnormal when the characteristics do not satisfy at least one criterion included in the rule-set.

Claims

1. An engine coolant monitoring system for a machine, comprising:

a test device configured to test a fluid sample of an engine coolant from the machine;

a database configured to store a test result generated by the test device, the test result including a plurality of characteristics of the fluid sample; and

a controller configured to;

access a rule-set associated with the engine coolant from the database, the rule-set including criteria associated with the characteristics;

determine whether characteristics of the fluid sample satisfy the criteria;

label the engine coolant as normal when the characteristics of the fluid sample satisfy the criteria; and

label the engine coolant as abnormal when the characteristics do not satisfy at least one criterion included in the rule-set.

2. The engine coolant monitoring system of claim 1, wherein the controller is configured to access the rule-set by:

determining a subtype of the engine coolant, the subtype including one of conventional coolant, diesel engine antifreeze coolant, or extended life coolant; and

accessing the rule-set based on the subtype.

3. The engine coolant monitoring system of claim 2, wherein the controller is configured to label the engine coolant as normal when each of the criteria in the rule-set is satisfied.

4. The engine coolant monitoring system of claim 2, wherein the controller is configured to:

select a subset of criteria from the criteria included in the rule-set; and

label the engine coolant as normal when the subset of criteria is satisfied.

5. The engine coolant monitoring system of claim 1, wherein the characteristics include at least one of an amount of precipitate, an opacity, an amount of foam, an amount of oil, an amount of ammonia, an amount of glycol, a pH value, an amount of nitrate, an amount of carbonate, an amount of chloride, an amount of silicate, an amount of iron, an amount of copper, an amount of aluminum, an amount of lead, an amount of zinc, or an amount of tin.

6. The engine coolant monitoring system of claim 5, wherein the controller is further configured to:

determine whether the pH value of the fluid sample is less than a pH threshold; and

determine an amount of water to be added to the engine coolant based on the pH value.

7. The engine coolant monitoring system of claim 5, wherein the rule-set includes:

a first criterion requiring the amount of precipitate to be less than a precipitate threshold;

a second criterion requiring the opacity to be one of transparent or cloudy;

a third criterion requiring the amount of foam to be less than a foam threshold;

a fourth criterion requiring the amount of oil to be less than an oil threshold;

a fifth criterion requiring the amount of ammonia to be less than an ammonia threshold;

a sixth criterion requiring the amount of glycol to be less than a glycol threshold; and

a seventh criterion requiring the pH value to be less than a pH threshold.

8. The engine coolant monitoring system of claim 7, wherein the rule-set further includes an eighth criterion requiring amounts of nitrates, carbonates, chlorides, and silicates to be less than respective thresholds of nitrates, carbonates, chlorides, and silicates.

9. The engine coolant monitoring system of claim 8, wherein the rule-set further includes a ninth criterion requiring amounts of iron, copper, aluminum, lead, zinc, and tin to be less than respective threshold amounts of iron, copper, aluminum, lead, zinc, and tin.

10. The engine coolant monitoring system of claim 1, wherein the controller is further configured to transmit an alert to the machine when the engine coolant is labeled abnormal.

11. The engine coolant monitoring system of claim 10, wherein transmitting the alert includes displaying a message on a display device associated with the machine.

12. The engine coolant monitoring system of claim 11, wherein the message includes recommendations changing the engine coolant of the machine.

13. The engine coolant monitoring system of claim 11, transmitting the alert further includes generating an audible alert using an alert device associated with the machine.

14. A method of monitoring an engine coolant in a machine, comprising:

extracting a fluid sample of the engine coolant from the machine;

testing the fluid sample using at least one test apparatus;

generating a test result, including a plurality of characteristics of the fluid sample;

storing the test result in a database;

accessing, using a controller, a rule-set associated with the engine coolant from the database, the rule-set including criteria associated with the characteristics;

determining whether characteristics of the fluid sample satisfy the criteria;

labeling the engine coolant as normal when the characteristics of the fluid sample satisfy the criteria; and

labeling the engine coolant as abnormal when the characteristics do not satisfy at least one criterion included in the rule-set.

15. The method of claim 14, further including:

determining a subtype of the engine coolant, the subtype including one of conventional coolant, diesel engine antifreeze coolant, or extended life coolant; and

selecting the rule-set based on the subtype.

16. The method of claim 15, wherein the characteristics include at least one of an amount of precipitate, an opacity, an amount of foam, an amount of oil, an amount of ammonia, an amount of glycol, a pH value, an amount of nitrate, an amount of carbonate, an amount of chloride, an amount of silicate, an amount of iron, an amount of copper, an amount of aluminum, an amount of lead, an amount of zinc, or an amount of tin.

17. The method of claim 15, further including:

determining whether a pH value of the fluid sample is less than a pH threshold; and

determining an amount of water to be added to the engine coolant based on the pH value.

18. The method of claim 15, further including:

determining whether an amount of a precipitate in the fluid sample exceeds a precipitate threshold;

determining whether the precipitate is magnetic; and

transmitting an alert to the machine when the amount of precipitate exceeds the precipitate threshold and the precipitate is magnetic.

19. The method of claim 18, wherein transmitting the alert includes displaying a message on a display device associated with the machine.

20. The method of claim 19, further including:

selecting a subset of criteria from the criteria included in the rule-set; and

labeling the engine coolant as normal when the subset of criteria is satisfied.