US 12,210,009 B2
On-vehicle water in fuel sensing system and related signal processing
Chad M. Goltzman, Bloomington, MN (US); Davis B. Moravec, Burnsville, MN (US); Mikayla A. Yoder, Eagan, MN (US); Michael J. Cronin, Apple Valley, MN (US); Sterling C. Hansen, Richfield, MN (US); Bradly G. Hauser, Minneapolis, MN (US); David D. Lauer, Minneapolis, MN (US); and Danny W. Miller, Ackley, IA (US)
Assigned to Donaldson Company, Inc., Bloomington, MN (US)
Filed by Donaldson Company, Inc., Minneapolis, MN (US)
Filed on Oct. 7, 2021, as Appl. No. 17/496,385.
Claims priority of provisional application 63/088,767, filed on Oct. 7, 2020.
Prior Publication US 2022/0107303 A1, Apr. 7, 2022
Int. Cl. G01N 33/28 (2006.01); F02M 37/26 (2019.01); G01F 1/74 (2006.01); G01N 21/17 (2006.01); G01N 21/31 (2006.01); G01N 21/59 (2006.01)
CPC G01N 33/2847 (2013.01) [F02M 37/26 (2019.01); G01F 1/74 (2013.01); G01N 21/17 (2013.01); G01N 21/31 (2013.01); G01N 21/59 (2013.01); G01N 2021/1736 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A water in fuel sensing system comprising:
a light source;
a light detector; and
a sensor controller;
wherein the sensor controller is in signal communication with the light detector;
wherein the sensor controller is configured to
evaluate signals received from the light detector, the signals comprising an absorbance peak;
distinguish between air bubbles and water droplets based on a peak width of the absorbance peak received from the light detector;
record information regarding the water droplets; and
generate an estimate of an amount of water in a fuel.