The principle of a car radiator is relatively simple. When driving, the momentum of the air cools the individual tubules, resulting in the hot coolant giving off heat. As a result, temperatures equalize – the coolant becomes cooler, while the space around the radiator heats up.
A very important element that guarantees the correct operation of the radiator is the fan. It is activated, for example, when stopping or standing in a traffic jam, because the momentum of the air cannot then take away the heat. In the context of modern cars, the electronically controlled thermostat should also be mentioned. It is equipped with a special valve controlled by the engine controller. With this solution, it is possible to manipulate the temperature of the coolant in such a way that the engine can operate at the optimal temperature regardless of the current load.
What materials are used to manufacture car radiators? The main components of the radiator are most often made of metal (e.g. aluminum), while the upper and lower parts can be made of plastic. Innovative materials with special properties are also increasingly used in the production of such components. One of these is Kevlar, used to reinforce sensitive components such as radiator hoses. This is a synthetic polymer that is distinguished by its very high tensile strength and at the same time light weight, which is crucial in the design of automotive components.
When it comes to the production of grilles, foamed polypropylene (EPP) injection molding technology is gaining popularity. This material has many favorable properties, the most important of which are excellent energy absorption and low weight. The use of this material guarantees the optimization of the total weight of the vehicle, as well as increased safety in the event of a collision.
