Oil quality monitoring

Patent metadata

Field	Value
Publication number	US-12188387-B2
Application number	US-201916704605-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	Dec 5, 2019
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

To monitor oil quality of an automotive vehicle, a sensor generates a signal indicative of a characteristic of the oil. A processor is configured to determine the oil quality from the signal. A communication component transmits an indication of whether the determined oil quality meets an unacceptability criterion to an external device.

First claim

The invention claimed is:

1. An apparatus to monitor oil quality of an automotive vehicle, the apparatus comprising:
a sensor that generates a signal indicative of a characteristic of oil;
a processor configured to determine the oil quality from the signal; and
a communication component to transmit over a communications network to a server external to the vehicle an indication of whether the determined oil quality meets an unacceptability criterion,
wherein, when the determined oil quality meets the unacceptability criterion, the server is configured to:
determine a model of oil degradation of the oil of the vehicle over time and over a number of miles traveled by the vehicle;
compare the model of oil degradation of the vehicle to models of oil degradation of other vehicles that are of a same model as the vehicle and that have had their respective oil quality meet the unacceptability criterion, wherein the models of oil degradation of the other vehicles are based on time and number of miles traveled respectively by the other vehicles;
determine based on the comparison whether the oil degradation of the vehicle occurs over a shorter distance or in less time than that of the other vehicles of the same model that have had their respective oil quality meet the unacceptability criterion; and
when it is determined that the oil degradation of the vehicle occurs over a shorter distance or in less time than that of the other vehicles, instruct a controller of the vehicle to limit operation of the vehicle by preventing engine operation of the vehicle, and generate an analysis result including the determination of the oil degradation of the vehicle.

2. The apparatus of claim 1 , wherein the indication of whether the determined oil quality meets the unacceptability criterion is transmitted to a mobile communication device over a cellular network as a text message.

3. The apparatus of claim 2 , wherein the indication of whether the determined oil quality meets the unacceptability criterion is transmitted to the mobile communication device over a communications network as an email message.

4. The apparatus of claim 1 further comprising:
a database implemented on the server and configured to store the oil quality information transmitted thereto.

5. The apparatus of claim 4 , wherein the database contains maintenance records of the vehicle.

6. The apparatus of claim 1 , wherein the sensor is a viscosity sensor.

7. The apparatus of claim 6 , wherein the processor is further configured to:
determine oil viscosity from the signal generated by the viscosity sensor;
compare the oil viscosity with the unacceptability criterion; and
compel an indicator to indicate that the oil quality meets the unacceptability criterion responsive to the comparing of the oil viscosity against the unacceptability criterion.

8. The apparatus of claim 1 , wherein the processor is further configured to:
predict a vehicle state that includes a predicted parameter from a current vehicle state that includes a current parameter of the oil quality.

9. The apparatus of claim 8 , wherein the predicted parameter is time to next oil change.

10. The apparatus of claim 1 , wherein the processor is further configured to:
determine the oil quality from a signal generated by an oil quality sensor;
compare the oil quality with the unacceptability criterion; and
compel an indicator to indicate that the oil quality meets the unacceptability criterion responsive to the comparing of the oil quality against the unacceptability criterion.

11. An automotive vehicle comprising:
a sensor that generates a signal indicative of a characteristic of oil;
a processor configured to determine the oil quality from the signal; and
a communication component to transmit over a communications network to a server external to the vehicle, an indication of whether the determined oil quality meets an unacceptability criterion,
wherein, when the determined oil quality meets the unacceptability criterion, the server is configured to:
determine a model of oil degradation of the oil of the vehicle over time and over a number of miles traveled by the vehicle;
compare the model of oil degradation of the vehicle to models of oil degradation of other vehicles that are of a same model as the vehicle and that have had their respective oil quality meet the unacceptability criterion, wherein the models of oil degradation of the other vehicles are based on time and number of miles traveled respectively by the other vehicles;
determine based on the comparison whether the oil degradation of the vehicle occurs over a shorter distance or in less time than that of the other vehicles of the same model that have had their respective oil quality meet the unacceptability criterion; and
when it is determined that the oil degradation of the vehicle occurs over a shorter distance or in less time than that of the other vehicles, instruct a controller of the vehicle to limit operation of the vehicle by preventing engine operation of the vehicle, and generate an analysis result including the determination of the oil degradation of the vehicle.

12. The automotive vehicle of claim 11 , wherein the indication of whether the determined oil quality meets the unacceptability criterion is transmitted to a mobile communication device.

13. The automotive vehicle of claim 11 further comprising:
a database implemented on the server and configured to store the oil quality information transmitted thereto.

14. The automotive vehicle of claim 11 , wherein the processor is further configured to:
predict a vehicle state that includes a predicted parameter from a current vehicle state that includes a current parameter of the oil quality.

15. The automotive vehicle of claim 14 , wherein the predicted parameter is time to next oil change.

16. A method of monitoring oil quality in an automotive vehicle, the method comprising:
determining the oil quality from characteristic data generated by a sensor;
determining whether the oil quality meets an unacceptability criterion; and
transmitting over a communications network to a server external to the vehicle an indication that the oil quality meets the unacceptability criterion responsive to the oil quality meeting the unacceptability criterion,
wherein, when the determined oil quality meets the unacceptability criterion, the server is configured to:
determine a model of oil degradation of the oil of the vehicle over time and over a number of miles traveled by the vehicle;
compare the model of oil degradation of the vehicle to models of oil degradation of other vehicles that are of a same model as the vehicle and that have had their respective oil quality meet the unacceptability criterion, wherein the models of oil degradation of the other vehicles are based on time and number of miles traveled respectively by the other vehicles;
determine based on the comparison whether the oil degradation of the vehicle occurs over a shorter distance or in less time than that of the other vehicles of the same model that have had their respective oil quality meet the unacceptability criterion; and
when it is determined that the oil degradation of the vehicle occurs over a shorter distance or in less time than that of the other vehicles, instruct a controller of the vehicle to limit operation of the vehicle by preventing engine operation of the vehicle, and generate an analysis result including the determination of the oil degradation of the vehicle.

17. The method of claim 16 further comprising:
predicting a vehicle state that

Assignees

• Toyota Eng & Mfg North America
• Toyota Motor North America Inc

Inventors

• Cammack William Daryl

Classifications

• F16N29/04

  enabling a warning to be given; enabling moving parts to be stopped · CPC title

• G01N11/00

  Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties · CPC title

• F01M1/18

  Indicating or safety devices (concerning lubricant level F01M11/06, F01M11/12) · CPC title

• G07C5/008

  communicating information to a remotely located station (transmission systems for measured values G08C) · CPC title

• F01M2011/148

  by considering viscosity · CPC title