Method and system for engine cooling system control

Methods and systems are providing for improving engine coolant level estimation to reduce engine overheating. The level of fluid in a coolant overflow reservoir is inferred based on the fluid level in a hollow vertical standpipe fluidically coupled to the reservoir at top and bottom locations, while...

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Bibliographic Details
Main Authors Jentz, Robert Roy, Gerow, Matt, Goodwin, William Russell, Griffin, Chad Everette, Dietrich, Casey, Thompson, Scott Steadmon, Rollinger, John Eric
Format Patent
LanguageEnglish
Published 30.07.2019
Subjects
BLASTING
COOLING OF INTERNAL-COMBUSTION ENGINES
COOLING OF MACHINES OR ENGINES IN GENERAL
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
MECHANICAL ENGINEERING
METERING BY VOLUME
PHYSICS
STEAM ENGINES
TESTING
WEAPONS
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Summary:Methods and systems are providing for improving engine coolant level estimation to reduce engine overheating. The level of fluid in a coolant overflow reservoir is inferred based on the fluid level in a hollow vertical standpipe fluidically coupled to the reservoir at top and bottom locations, while the fluid level in the standpipe is estimated based on output from an ultrasonic signal transmitted by a sensor positioned in a recess at the bottom of the vertical standpipe. The sensor uses a combination of raw echo times and processed fluid level data to estimate the fluid level accurately and reliably.
Bibliography:Application Number: US201414583414