can be utilised for specialty applications, such as peristaltic pumps. Disadvantages The following have yet to be verified independently. Vibration Reliability, especially when running lean as is required for good economy. Emissions Patents U.S. Patent 5,992,356 "Opposed piston combustion engine "; November 30, 1999; Howell-Smith; Bradley David (Worongary, AU). Revetec has a Patent Cooperation Treaty (PCT) patent application pending for the "X" design lodged late 2006. Performance A dyno graph of the Revetec 1.38litr engine is shown on their development page, shows a flat torque curve. Test results (11 November 2007) on the X4v2 engine showing torque and power curves and the fuel injection map. In April 2008, Revetec completed their first Independently Certified Test Report carried out by Orbital Australia, achieving a repeatable BSFC figure of 212g/kW-h (38.6% efficiency). References External links Revetec website Cams Replace Crank in new Engine Design from Automotive Design & Production. Engine technology Piston engine configurations Proposed engines Boxer engines