Engine cooling system with overload handling capability

Details Engine cooling system with overload handling capability Engine cooling system with overload handling capability

2007-03-07

2008-12-16

Kamen, Noah (Department: 3747)

Internal-combustion engines

Cooling

System drained and/or heat-storing

C123S041290

Reexamination Certificate

active

07464672

ABSTRACT:
A cooling system for an internal combustion engine incorporating a heat accumulator to temporarily store heat during peak heat loads. In automotive vehicles, the heat accumulator may store excess heat generated during vehicle acceleration or hill climbing and it may dissipate stored heat during vehicle cruise, deceleration, or engine idle. The heat accumulator contains phase change material with a solid-to-liquid transition temperature higher than the normal operating temperature of the cooling system. The invention enables reducing the size and weight of engine cooling system without compromising its performance. This is particularly important for improving fuel economy and reduction of emission in automotive vehicles. In addition, the invention enables reducing the coolant inventory in the system thereby allowing for faster engine warm-up and reduced emissions of harmful pollutants during a cold engine start. The invention may be also used for thermal management of engine oil, transmission fluid, or hydraulic fluid.

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patent: 6883470 (2005-04-01), Lee
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