H 40/50 EP™ Series

Allison Transmission’s H 40/50 EP™ Series is a unique two-mode parallel hybrid transmission that has been proven to be a dependable and efficient system for buses and coaches. From reduced emissions, quieter operation and fuel economy improvements (as compared to diesel-powered buses), the H 40/50 EP Series provides reduced brake maintenance costs and fast, smooth acceleration. The H 40/50 EP Series is equipped with regenerative braking, a system that converts the vehicle’s kinetic energy to stored electric energy when decelerating or stopping, and has ratings up to a maximum 246 kW (330 hp). In full production since 2003 and now operating in thousands of buses, it has proven up to 25% fuel saving, depending on the duty cycle.