Air-cooled engines rely on the circulation of air directly over heat dissipation fins or hot areas of the engine to cool them in order to keep the engine within operating temperatures. Air-cooled designs are far simpler than their liquid-cooled counterparts, which require a separate radiator, coolant reservoir, piping and pumps.
A cylinder from an air-cooled aviation engine, a Continental C85. Notice the rows of fins on both the steel cylinder barrel and the aluminum cylinder head. The fins provide additional surface area for air to pass over the cylinder and absorb heat.
Honda CB1100
The Tatra 815 is a truck family, produced by Czech company Tatra. It uses the traditional Tatra concept of rigid backbone tube and swinging half-axles giving independent suspension. The vehicles are available in 4x4, 6x6, 8x8, 10x8, 10x10, 12x8 and 12x12 variants. There are both air-cooled and liquid-cooled engines available with power ranging from 230–440 kilowatts (310–590 hp). As a successor to Tatra 813 it was originally designed for extreme off-road conditions, while nowadays there are also variants designated for mixed use. The gross weight is up to 35,500 kg (78,264 lb).
Tatra T 815 (2005)
T815 TERRN°1 2010 facelift
Tatra T815 8x8 crane with low cab
Tatra T815 TERRN°1 4x4 fire engine
