Brunswick Corporation

Ronnie E Randolph

Roger W Schreiber

Jeffrey J Dudarenke

A cooling fluid pump is for a cooling a marine engine. The cooling fluid pump comprises a pump chamber that contains an impeller. An upstream inlet passage supplies cooling fluid to the pump chamber. A downstream outlet passage discharges cooling fluid from the pump chamber. An impeller shaft rotates the impeller, causing flow of cooling fluid through the pump chamber from the inlet passage to the outlet passage. A drain passage connects the pump chamber to the inlet passage such that at least when the impeller is not rotating, the drain passage drains cooling fluid that settles by gravity in the pump chamber back to the inlet passage.

Cooling fluid pump for cooling a marine engine

Systems and methods are for monitoring an operational characteristic of a pump pumping cooling water from upstream to downstream to cool a marine engine. A sensor senses a characteristic of the cooling water at a location that is downstream of the pump. A control circuit is in communication with the sensor and receives the sensed characteristic of the cooling water, compares the sensed characteristic of the cooling water to a stored nominal value, and determines a present operational condition of the pump based on the comparison.

Growing community of inventors

Fond du Lac, WI, United States of America

Ronnie E Randolph