Ford Global Technolgoies, LLC

Alan Huang

John Eric Rollinger

Robert Roy Jentz

Chad Everette Griffin

Casey Dietrich

Matt Gerow

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 echo times of an ultrasonic signal transmitted by a sensor positioned in a recess at the bottom of the vertical standpipe. Sensor output is compensated with a term based on vehicle motion parameters to compensate for fluid level distortion due to motion-induced slosh.

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Westland, MI, United States of America

Alan Huang