About: Koenigsegg TFG

The Koenigsegg TFG is an Inline-3 engine. The TFG stands for "Tiny Friendly Giant." It is a Freevalve (Camless piston engine), thus it does not have a camshaft. Instead it uses pneumatic actuators that allows it to open each valve (both intake and exhaust) independently to maximise performance and minimise fuel consumption depending on driving conditions. The pneumatic actuators also have the ability to switch the engine between 2-stroke cycles and 4-stroke cycles by controlling the number of power strokes in relation to the number of idle strokes. The patent for this system was bought by Koenigsegg's sister company Cargine Engineering in 2002. The Variable displacement system allows fuel economy to be 15%-20% higher than a variable camshaft engine. Cold start emissions are also drasticall