An interurban parallel hybrid coach solution was exhibited by Irizar at the FIAA show in the form of an i4h integral in left-hand drive form.
The i4h is powered by a six-cylinder Cummins ISB6.7 engine rated at 300bhp and Irizar’s literature shows that it can open in engine-only or battery-only modes, with both power sources available at the same time at times of peak power demand.
An automated six-speed Eaton Fuller gearbox is fitted and Irizar says that the model is available at lengths between 10.7-13m on two axles.
A tri-axle 15m i4h is a new development, powered by the 370bhp, 8.9-litre ISL engine in conjunction with a ZF EcoLife automatic gearbox.
In this model, a 110kW Irizar electric drive package is fitted; in two-axle i4h coaches a 65kW Edrive motor is used.
Irizar says that the i4h is the only Class II hybrid coach in the world with a raised aisle and a luggage compartment. A fuel saving of up to 21% is offered when compared with identical diesel models.
At low speeds the i4h utilises the batteries only to operate in engine-off mode, and at higher speeds it can run in engine-only configuration.