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US 5,180,003 AGranted
Dual fan cooling system
AssigneeCaterpillar Inc.
InventorsRichard L. Kouzel, Aubery W. Penn, Brian D. Jensen, Paul A. Dicke
Life of this patent
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AssigneeCaterpillar Inc.
InventorsRichard L. Kouzel, Aubery W. Penn, Brian D. Jensen, Paul A. Dicke
Estimating the term…
Cooling systems are necessary to cool fluid circulated through an internal combustion engine so that engine temperatures can be controlled. The subject dual fan cooling system increases the air flow through a heat exchanger (40) by utilizing a primary fan and a secondary fan (50, 82). The primary fan (50) is located on one side of the heat exchanger (40) and pushes air through the heat exchanger (40) while the secondary fan (82) is located on the opposite side of the heat exchanger (40) and pulls air through the heat exchanger (40). The secondary fan (82) is rotatably mounted in a substantially concentric relation with the primary fan (50) to pull air through the heat exchanger (40) at the area (L) of lowest air flow. The secondary fan (82) also substantially eliminates the recirculation of air back through the heat exchanger (40). A shroud (86) encompasses the secondary fan (82) to substantially block air pushed through the heat exchanger (40) by the primary fan (50) from the secondary fan (82).
A dual fan cooling system (38), comprising:
A dual fan cooling system (38) for an internal combustion engine having a heat exchanger (40), comprising:
Dependencies are inferred from the claim text.