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US 7,597,070 B2Granted
Dual drive radiator fan and coolant pump system for an internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsDavid R. Krolewski, Mike W. Drawe
Life of this patent
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Abstract
A dual drive radiator fan and coolant pump system for a liquid-cooled reciprocating internal combustion engine includes a coolant pump with an impeller shaft driven by a first drive extending between the engine's crankshaft and a pump pulley and hub mounted upon the impeller shaft. A second drive extends between the crankshaft and a fan hub journaled upon the pump hub, so that the coolant pump and fan hub are driven independently.
Claims4
A dual drive radiator fan and coolant pump system for a liquid-cooled reciprocating internal combustion engine, comprising:
- a coolant pump having an impeller shaft driven by a first drive extending between the engine's crankshaft and said impeller shaft;
- a fan hub journaled upon said impeller shaft;
- a fan assembly attached to said fan hub;
- a second drive extending between the crankshaft and said fan hub;
- and
- an overrunning clutch interposed between said fan hub and said impeller shaft.
3 more elements
Dependencies are inferred from the claim text.