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Video Thermodynamics 1
Video Thermodynamics 2
Video Thermodynamics 3
Video Thermodynamics 4
Video Thermodynamics 5
Video Thermodynamics 6

Video Cooling

Video Add. Information
Video Summary
Video Maintenance
Video Repair
Video How to get engine warm?
Video Air Cooling
Video Air-stream Cooling
Video Air/Liquid Cooling
Video Blower Cooling
Video Axial Blower 1
Video Axial Blower 2
Video Radial Blower
Video Liquid Cooling
Video Cooling Module
Video Radiator
Video Closed Cooling S.
Video Coolant Pump 1
Video Coolant Pump 2
Video Coolant Pump 3
Video Coolant
Video Antifreeze
Video Frost Plug
Video Electr./Hydr. Fan
Video Vacuum Filling
Video Hydrostatic Blower
Video Belt Drive
Video V-belt Drive
Video Fuel Vaporization
Video Thermostat
Video Electronic Cooling 1
Video Electronic Cooling 2
Video Thermosiphon Cooling
Video Visc. Cooling Fan 1
Video Visc. Cooling Fan 2
Video Oil Cooling
Video Heat Exchanger
Video Charge Ait Cooler 1
Video Charge Ait Cooler 2
Video Fuel Cooling



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Axial Blower 2










Assignment

One may. by no means assume, that air-cooling stands in the way of a high performance yield. The Porsche company has been proving this for decades. In the end, air-cooled engines have been known to produce over 1000 Hp.

Function

The first figure above, shows the rear-mounted engine of a Porsche 911, which although it has been tuned, has an axial blower which corresponds to the standard component. One can see how, with just a slight increase in the RPMs, a large amount of air is taken in and distributed from above to the cylinder-banks. This is a completely different cool-air guidance than is found in the radial blower of the VW-Beetle, from which the Porsche once originated.

The second figure above, shows the distinctly different cool-air guidance of the Carrera four-cylinder racing engine. In this case, the air is drawn in through a horizontal blower. This construction is even more compact. If here, the regulation through a fan belt and an angle drive was complicated, figure 3 above, shows the solution achieved after numerous development stages. What can be seen is the crank mechanism of one of the most successful racing cars of all time, the Porsche 917. It is called a 12-cylinder boxer-engine, is however, actually a V-engine. What is important here, is the central power-drive, which does not strain the crankshaft as strongly. It is from here that the torque is sent to the clutch and gearbox. It is very important here that a gigantic fan-wheel can be mounted, which takes in and directs enough cool-air from above, onto the cylinders. It couldn't be any simpler. In this case however, a thermostatic regulation would be difficult, in this racing engine it was probably not considered essential. 05/10


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Translator: Don Leslie - Email: lesdon@t-online.de

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