Engine Accessory Optimization through Mild Hybridization

Orbital Traction (Orbital) proposes to research the fuel efficiency gains possible by implementation of an innovative controlled velocity accessory drive (CVAD) system on multiple accessories for the Amphibious Combat Vehicle (ACV). Research includes CVAD implementation directly on existing accessories and a Mechanical Mild Hybrid Controlled Velocity Accessory Drive System (MMH-CVAD) which allows for optimization of the ACV's engine accessories (e.g., alternator, cooling fan, A/C compressor, etc.) using a combination of mechanical continuously variable transmissions (CVT) and/or high efficiency, high power density generators. By optimizing the engine accessories as a system, Orbital believes that up to 15% improvement can be achieved for the ACV, which can in turn extend the vehicle range and silent watch capabilities. Orbitals proposed solution is based on a proprietary CVT technology that has already demonstrated the potential for significant fuel efficiency improvements for individual front end accessory drives, is non-invasive to the engine and can be used with existing military approved engine accessories.