Chamber Air Flow Control Before the Radiator

The passage of cooling air through the engine compartment is accompanied by a significant increase in aerodynamic drag of the car. On the other hand, forming of air flow due to the operation of the fan is associated with additional energy costs. To reduce fuel consumption and emission of harmful substances, it is necessary to reduce the power consumption for supplying cooling air. At the same time, the possibility of rational use of the oncoming air flow and fan power should be taken into account. The easiest way to solve the problem is a fan installation with the case, which area is less than the front area of the radiator. The main disadvantage of this design is the air circulation from the engine compartment of the engine. In this work there is a conducted research on reducing air circulation. The simplest method has been studied, a partition has been installed in the pre-radiator chamber separating the free zone of the radiator and the zone of the fan case. A good effect has been recorded, but only if the resistance of the engine compartment is less than the resistance of the radiator.