Filter diagnostics and prognostics
First Claim
Patent Images
1. A method for a lubricant filter, comprising:
- indicating a condition of the filter based on a difference between a measured pressure differential output from a differential pressure sensor and an expected pressure differential during select conditions in which all lubricant pumped by a pump upstream of the filter flows into the filter, wherein a degraded condition of the filter corresponding to a fault of a filter bypass valve setpoint is indicated if the measured pressure differential is greater than the expected pressure differential and is substantially greater than the filter bypass valve setpoint.
1 Assignment
0 Petitions
Accused Products
Abstract
Various systems and methods are provided for a lubricant filter. In one example, a method for a lubricant filter comprises indicating a condition of the filter based on a difference between a measured pressure differential and an expected pressure differential during select conditions in which all lubricant pumped by a pump upstream of the filter flows into the filter.
-
Citations
14 Claims
-
1. A method for a lubricant filter, comprising:
indicating a condition of the filter based on a difference between a measured pressure differential output from a differential pressure sensor and an expected pressure differential during select conditions in which all lubricant pumped by a pump upstream of the filter flows into the filter, wherein a degraded condition of the filter corresponding to a fault of a filter bypass valve setpoint is indicated if the measured pressure differential is greater than the expected pressure differential and is substantially greater than the filter bypass valve setpoint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
14. A method for a lubricant filter, comprising:
-
indicating a condition of the filter based on a difference between a measured pressure differential sensed by a differential pressure sensor and an expected pressure differential during select conditions in which all lubricant pumped by a pump upstream of the filter flows into the filter, displaying a remaining operational life of the filter based on one of the difference between the measured pressure differential and the expected pressure differential, and a frequency of filter bypass valve opening, wherein displaying the remaining operational life of the filter includes estimating a relatively shorter remaining operational life for a relatively higher frequency of filter bypass valve opening, and wherein displaying the remaining operational life of the filter includes estimating a relatively longer remaining operational life of the filter for a relatively lesser frequency of filter bypass valve opening.
-
Specification