15 Apr 2020


Volvo has upgraded its hybrid bus series 7900 and calls it now
“S-Charge” what stands for “self-charging”. The bus is still a hybrid using a diesel or biofuel generator and electric power. The “self charging” is done by recuperating brake energy. The bus can now drive silently and emission-free on electricity at higher speeds and cover longer distances than before.

Volvo’s S-Charge model range includes a conventional 12-metre configuration, the Volvo 7900 S-Charge, an articulated bus, the Volvo 7900 S-Charge Articulated, and as bare chassis, the Volvo B5L S-Charge, to be finalized as a single or double decker.

According to Volvo the “new” S-Charge model can run on electric propulsion up to 50 km/h, in the previous model this used to be 20 km/h. Depending on climate and topography, the Volvo S-Charge can run on electricity for up to 1 km. The batteries are charged via the energy generated through brake energy recapturing.

The upgrade also includes improved connectivity and Volvo’s system for geo-fencing, Volvo Zone Management, which makes it possible for the operator to program the bus so it automatically switches to electric propulsion within selected areas and has its speed regulated without driver intervention. It is also possible to define zones for sustained self-charging, to ensure emission-free operation in an upcoming zero-emission zone.

One other advantage is that the S-Charge models can be driven on electricity even before arriving at the bus stop and leaving it again. In other situations, propulsion is handled by a small combustion engine. The S-Charge can also drive on biofuel.

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