US 11,703,009 B2
Method and system for fuel filter monitoring
Ye Tian, Bloomington, IL (US); Sravan K. Karri, Dunlap, IL (US); Michael T. McKinley, Washington, IL (US); and Brenton W. Bush, Dunlap, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on May 13, 2022, as Appl. No. 17/663,342.
Application 17/663,342 is a continuation of application No. 17/165,461, filed on Feb. 2, 2021, granted, now 11,339,737.
Prior Publication US 2022/0275767 A1, Sep. 1, 2022
Int. Cl. F02D 41/22 (2006.01); F02M 37/40 (2019.01); B01D 35/143 (2006.01); B01D 37/04 (2006.01); B01D 35/00 (2006.01); B60Q 9/00 (2006.01); F02D 41/02 (2006.01)
CPC F02D 41/22 (2013.01) [B01D 35/005 (2013.01); B01D 35/143 (2013.01); B01D 37/046 (2013.01); B01D 37/048 (2013.01); B60Q 9/00 (2013.01); F02D 41/021 (2013.01); F02M 37/40 (2019.01); B01D 2201/52 (2013.01); B01D 2201/54 (2013.01); F02D 2041/224 (2013.01); F02D 2041/228 (2013.01); F02D 2200/0606 (2013.01); F02D 2200/0611 (2013.01); F02D 2200/70 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fuel filter monitoring system, comprising:
a sensor system including:
at least one pressure sensor configured to output a pressure signal that indicates a pressure associated with at least one fuel filter for an internal combustion engine that receives fuel injected by a plurality of fuel injectors; and
a location sensor configured to output a location signal that indicates a geographic location; and
a controller configured to:
receive the pressure signal from the at least one pressure sensor,
receive the location signal from the location sensor,
estimate a remaining useful life based on the pressure signal and based on the location signal,
detect a change in location based on the location signal, and
change a rate at which the estimated remaining useful life declines based on the change in the geographic location.