International Engine Intellectual Property Company, LLC

Ernst Duerr

Martin R Zielke

Luis Carlos Cattani

Robert Lawrence Rowells

Peter Popadiuc

George L Banta, Iii

An expansion tank () for a vehicle cooling system () of an engine using a liquid coolant () includes a tank body () defining a first volume (V) containing coolant (), wherein the coolant defines a variable coolant elevation level (CEL) within the tank body. The tank body () also defines an upper volume () containing air. A bladder () is disposed in the tank body () and defines a second volume (V) containing air. The bladder () includes a flexible membrane () actuated by an actuator (). When the engine is stopped or is below a predetermined temperature, the flexible membrane () is moveable to a first position (FP) which lowers the coolant elevation level (CEL), and when the engine is started or reaches a predetermined temperature, the flexible membrane () is moveable to a second position (SP) which raises the coolant elevation level. A communicating line () is in fluid communication between the upper volume () and the second volume (V) to fluidly communicate air therebetween.

Growing community of inventors

Willowbrook, IL, United States of America

Ernst Duerr