The Development of Automotive Radiators
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The development of automotive radiators as an essential component of early automobiles all the way up to the super sophisticated vehicles of today demonstrate that there is no end to the ingenuity of automotive engineers. A radiator as an essential part of the car or truck or just about any other motorized vehicle is undoubtedly without dispute. It is very efficient at doing what it does.
A radiator itself is mainly used help cool any internal combustion engine, and is usually seen in automobiles, locomotives, motorcycles and even aircraft that have a piston engine in them. The basics of their operation are simplicity itself, too. They worked to pass a liquid coolant such as water or anti-freeze through the block of an engine where the liquid ends up becoming heated.
Upon its return to the radiator, the coolant is circulated throughout it and the heat is radiated outward into the surrounding atmosphere. Usually, in most internal combustion engines the radiator will be located in front of a rotating fan, with the coolant being circulated through the engine and then back to the radiator by means of a pump. This pump is normally known as a ‘water pump.’
Historians credit the invention of the radiator to Karl Benz, the German automobile engineer and designer who is also given credit for the creation of the first gasoline powered automobile. He, along with Wilhelm Maybach and Gottlieb Daimler, came up with the basic design nearly at the same time, though none of the three new the other two were working on such a device.
It was Benz, though, who was the first to patent his design. In fact, Benz was so efficient at getting his innovations for the internal combustion engine to the patent office first that he is generally referred to as the inventor of the automobile engine. His first engine appeared in 1878, and he was granted a patent for it in 1879. The radiator was an integral part of this first engine.
Back then, and up until the 1970s, just about every radiator made was constructed of copper and brass within its core. That’s quite a long time for any initial design material to last, but both metals were extremely efficient at radiating heat from the coolant that was circulated through them. Up until the 1990s, those two metals also were fairly ubiquitous, though aluminum began to make serious inroads.
Aluminum began to be taken seriously because automakers were starting to look for ways to save weight due to the need to conserve fuel and stretch a gallon of gasoline farther. A car that weighs less tends to use less gas, and other words. Since then, aluminum in radiators has appeared in more and more of those units, though copper and brass still make up the vast majority of aftermarket radiators.
The fact that these original materials are still so appreciated and used is a true testament to their essential effectiveness. New innovations in the way that copper and brass are built-in to radiators has seen the creation of extremely lightweight radiators that are far superior to just about any radiator on the market today, whether aluminum or other metal.