The Tour engine design splits the conventional 4-stroke cycle between two cylinders: The Cold-Cylinder hosts the intake and compression and the Hot-Cylinder hosts the combustion and exhaust. A proprietary
crossover valve is used to transfer the compressed charge from the Cold-Cylinder to the Hot-Cylinder.
Our latest (2015) crossover valve mechanism is a technology enabler. It permits an efficient and complete transfer of working fluid and it is further developed both in Israel and the US. Read More