After the theory was realised, Brad literally dreamt the Revetec engine design. After graphing the performance of the new engine design, it was realised that it is possible to increase an engine’s efficiency to a much

higher level. In some initial designs it was calculated that a petrol engine of this design could reach 50% efficiency, which is deemed as unachievable in the industry.

Breaking the Theory

Over the last decade, six different versions of Revetec engine designs have been prototyped. The latest version was designed as a development engine for the aviation industry, and in early 2008 it was independently tested by Orbital Australia.

The X4v2 engine has a very basic top end featuring only two valves per cylinder operated by push rods. It features no variable valve timing nor variable length intake ports which are common in many current late model vehicles.

The petrol engine achieved a Brake Specific Fuel Consumption (BSFC) of 207g/(kW-h) or 39.5% efficiency. The figure achieved was deemed as impossible, given the knowledge of engine losses and that various current engines achieve an efficiency in the range of 27-32%.