Allison Transmission will expand its electrification portfolio that includes an electric-hybrid system with a purely electric extended range – up to 15 kilometres. Ideal for coach and bus applications, the system features zero-emissions with engine off, including on approaching, during and leaving passenger stops, for a quieter and healthier environment.
Additional features include a higher energy li-ion battery for extended engine-off range and the introduction of a smaller, lighter dual inverter with water ethylene glycol cooling, which makes operation more efficient. Increased Power Accessory II uses the hybrid system to power accessory components like air conditioning, air compressors and power steering.
The advanced system is electric-only capable, but no electric charging infrastructure is required.
Battery charging is accomplished via regenerative braking and engine operation. The regenerative braking capability can extend the brake change interval by up to 350%.
The two-mode split parallel architecture improves fuel economy up to 25%.
