Injection System Demonstrates Potential for Rapid Injection at High Speed: Researchers at Musashi Institute of Technology and the National Traffic Safety and Environment Laboratory investigated the potential of using a common-rail diesel fuel injection system for actuating a hydrogen injection nozzle to achieve a short injection duration of less than 30 CA degrees at an engine speed of 3,000 rpm with hydrogen injection pressure of 20 MPa. Subsequently, multiple injection capability was investigated.