The flow-through barrel valve design represents a disruptive change in the internal combustion engine. To ensure the Army of the future is relevant, modular and dependable, our future vehicle fleets demand this technology. This technology ensures a 40% reduction in valve train friction, a 20% reduction in pumping losses, and a minimum 10% improvement in engine fuel efficiency without any emissions penalties. It optimizes performance, increases volumetric efficiency and downsizes the engine’s weight and size (2/3rds of the parts are eliminated when compared to a normal combustion engine). It reduces maintenance, increase ease of maintenance and has both gasoline and diesel versions.