System and method for determining oil grade
First Claim
Patent Images
1. A method for determining an oil grade comprising:
- determining a temperature in an oil supply;
determining a first pressure in said oil supply;
determining a second pressure in said oil supply;
determining an actual pressure drop from said first and second determined pressures;
determining a plurality of estimated pressure drops for each of a plurality of oil grades at said temperature;
comparing said actual pressure drop to each of said plurality of estimated pressure drops; and
determining said oil grade in response to said actual pressure drop matching one of said estimated pressure drop.
1 Assignment
0 Petitions
Accused Products
Abstract
The grade of oil used in a machine or apparatus can be determined by determining a temperature and pressure within an oil supply and determining the oil grade in response to determining the temperature and pressure.
-
Citations
18 Claims
-
1. A method for determining an oil grade comprising:
-
determining a temperature in an oil supply;
determining a first pressure in said oil supply;
determining a second pressure in said oil supply;
determining an actual pressure drop from said first and second determined pressures;
determining a plurality of estimated pressure drops for each of a plurality of oil grades at said temperature;
comparing said actual pressure drop to each of said plurality of estimated pressure drops; and
determining said oil grade in response to said actual pressure drop matching one of said estimated pressure drop. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A system for determining an oil grade comprising:
-
a temperature sensor;
a pressure sensor; and
an electronic control module connected to said temperature sensor and said pressure sensor;
wherein said electronic control module receives a temperature signal from said temperature sensor and determines a plurality of estimated pressure drops for each of a plurality of oil grades at said temperature, and wherein said electronic control module further receives first and second pressure signals from said pressure sensor, determines an actual pressure drop from said first and second pressure signals, compares said actual pressure drop to each of said plurality of estimated pressure drops and determines said oil grade in response to said actual pressure drop matching one of said estimated pressure drops. - View Dependent Claims (7, 8, 9, 10, 11, 12)
-
-
13. A method of determining an oil grade of an oil supply comprising:
-
measuring a temperature of said oil supply;
measuring a first pressure of said oil supply;
measuring a duration of an event drawing oil from said oil supply;
measuring a second pressure of said oil supply;
estimating a pressure drop for each of a variety of oil grades in response to said temperature and said duration;
determining an actual pressure drop of said oil supply in response to measuring said first pressure and measuring said second pressure;
comparing said actual pressure drop to each of said estimated pressure drops; and
determining said oil grade in response to said comparing step. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification