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Bonn: 24 hybrid buses for SWB

The new MAN Lion's City efficient hybrid in Bonn | © Christian Marquordt

2020 brings a considerable change in the bus fleet of SWB Stadtwerke Bonn, Bonn’s urban transport company: Just one older bus will remain, no. 9902, a Mercedes-Benz O 405 N from 1999, which was retrofitted several years ago and therefore remained in the fleet. A number of younger buses including several older Mercedes Citaro and articulated buses from MAN are to be sold SWB, via a web-based bidding process. Bus 9902 will be sold separately.

New buses of the 2020 purchase include 24 hybrid buses, seven “MAN Lion’s City 12 efficient hybrid” (numbered 2005 – 2011) and seventeen “MAN Lion’s City 18 efficient hybrid” (numbered 2012 – 2028).

No. 2017, one of the new Lion’s City 18 efficient hybrid | © Christian Marquordt
Interior fo no. 2008 | © Christian Marquordt

On 7 October 2020, SWB presented the new buses at its Friesdorf depot.

The new MAN are so-called “mild hybrids”, not full hybrids. This means that the diesel engine always works while the bus is running and is “only” supported by the electric drive. Unlike a full hybrid, the car never drives 100% purely electric. You can see this when you are travelling with the “Mild Hybrid”: you always hear the diesel engine (unless it is switched off thanks to the automatic start-stop.

The new Lion’s City 18 efficient hybrid | © Christian Marquordt

The electric motor is installed in the powertrain between the diesel engine and the transmission. Recuperation equipment is included: When braking, electricity is generated and stored in ultracaps on the roof.

SWB Managing Director Anja Wenmakers: “Withthese new mild hybrid buses, we will only achieve the goal of Stadt Bonn to become climate neutral by.” Even more, by 2030 SWB wants to have completely converted its bus fleet to electric buses.

The seven “Lion’s City 12 efficient hybrid” have 32 seats and 64 standing places, the articulated carriages offer 46 seats and 101 standing places.

In addition, SWB received another 4 MAN Lion’s City, but of the previous generation and as EUR VI diesel, to operate on the airport line, numbered 2001-2004.

This Mercedes-Benz/Drögmöller O 321 H once operated the airpòrt service | © Christian Marquordt
One of the Mercedes O 302-on the airport service in the 1970s, SWB no. 7031 | © Christian Marquordt
Citaro Ü for the airport serivce, no. 0104 | © Christian Marquordt
Brand new: Airport bus no. 2001 | © Christian Marquordt

Total costs of the 28 new MAM buses is 10 mn EUR.

SWB will receive more electric buses in 2020: Four 12 metre long electric buses of the type “Ebusco 2.2” and three “Solaris Urbino 18 electric” (18 meter long electric articulated buses). All seven will arrive in Bonn before the end of the year.

No. 2026 | © Christian Marquordt
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