Abstract
Automotive engine cooling system has become a prime focus in the field of growing automotive engineering. The engine cooling system has a major impact on vehicle fuel efficiency & emission norms. In the development of automotive engine cooling system, the design & performance testing of radiator are carried out more often as isolated component without considering the impact of surrounding components. The kind of blockages in the upstream direction of radiator also will not be available at the early design stage of vehicle. These, design & performance tests are done with the assumption that airflow distribution is uniform & cooling air temperature is equivalent to ambient temperature. However, at vehicle level these assumptions are not valid due to the presence of the block in the refrigerating Airflow passage. This paper analyses the impact of blockage area on performance of radiator & recommendations are suggested to lay out the CAP in the upstream direction of radiator with minimal blockages & reduced heat exchanger interaction effects. The proposed new control unit chooses the condenser position to be in an arrangement 'one behind other' or 'one underneath other'. From the investigation it is suggested that control unit can be worked with 'obo' setup at vehicle speed under 30kmph & past that 'obelo' can be picked.
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