Patent ID: 8015954
Filing Date: 2011-09-13
Classification: B60K,F01P

Abstract:
1. A radiator fan arrangement for a vehicle powered by a combustion engine, the radiator fan arrangement comprising: at least one cooling element configured to cool a medium flowing to the combustion engine to cool the combustion engine; a second cooling element configured to cool gas or charge air before the gas or charge air is delivered to the combustion engine; a first radiator fan operable for continuously generating a forced air flow through at least one first region of the cooling element in order to cool the medium and through at least the first region of the second cooling element in order to cool the gas or charge air during operation of the combustion engine; at least one extra radiator fan selectively operable to generate an increased air flow through at least one second region of the cooling element and through at least the second region of the second cooling element in order to cool the gas or charge air, the first and second regions being at least partly different; a coupling mechanism connecting between the combustion engine and the extra radiator fan for powering the extra radiator fan by means of the combustion engine; the radiator arrangement further having an electric motor operable to continuously power the first radiator fan at a substantially constant speed when the combustion engine is activated; and a control unit configured to activate the at least one extra radiator fan only when extra airflow to the cooling elements is required to provide cooling for the cooling elements.