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MAN Lion's City 2012: new product features for greater efficiency and reduced lifecycle costs

MAN Lion's City 2012: new product features for greater efficiency and reduced lifecycle costs

For the IAA 2012, MAN has further upgraded its family of Lion's City buses by adding new product features to ensure even greater efficiency, more safe-ty and comfort. These technical innovations lower fuel consumption of city buses even further, whilst also contributing to a reduction in CO2 emissions. The savings in consumption achieved average between three and five percent across all engine variants.

The first impression made by these new city buses is their new brand design. The MAN lion on the radiator grille has been made more prominent by being moved into the upper chrome trim. The lion’s silhouette is more pronounced and imparts stronger dynamics. The newly designed emblem is replicated in the interior, for example, on the steering wheel and the ignition key.

All MAN Lion's City buses are equipped with a highly efficient transmission control. During vehicle operation, the topography-dependent transmission control automatically activates the gear-change program that most efficiently navigates the gradient, depending on whether it is on an uphill or downhill stretch. On steep inclines, the Power mode delivers maximum power. By contrast, the Eco mode shifts the bus into the fuel-saving higher gears earlier when travelling on level roads. Lower gear-change speeds cause less vehicle noise, making for a quieter, more pleasant driving experience. On downhill stretches, the software automatically exerts optimum braking power.

Future MAN city buses will feature lighter, energy-optimised air-conditioning systems. The weight saving in solo buses thereby amounts to 60 kg, whilst articulated buses tip the scales at 110 kg less. Optimised ventilation lowers the current drain due to the air-conditioning fan by 10 to 15 percent. On top of that, the new air-conditioning systems are quieter and the air filters have longer service lives.

Optionally, the Lion's City articulated buses can be fitted with a translucent bellows. The large surface area of the bellows lets more daylight into the interior of the bus, thus creating a more pleasant atmosphere and a brighter aisle along the full length between the front and rear of the bus. New, light roof hatches made of safety glass that similarly allow more daylight into the vehicle are optionally available to visually enhance the value of Lion's City solo or articulated buses.

For added safety, all solo buses of the Lion's City family can be equipped with the electronic stability program (ESP) on request. When driving emergencies arise, the system's targeted deceleration of individual wheels and automatic engine torque reduction ensure that the Lion's City remains safely in its lane even in critical situations.

With immediate effect and to sustain value, MAN will be using cathodic dip painting (CDP) on all bus skeletons. The evenly thick coating provides particularly dependable and long-term corrosion protection for the steel frame-work on the outside and for the interior cavities. In the CDP process, paint is applied permanently to the metal by electrical direct current. Moreover, the CDP process is environmentally friendly and low on the use of solvents.

The new sidewall segmenting on MAN’s Lion's City buses helps minimise repair costs and idle times due to slight impacts or minor accidents. Unlike previous models, now only the damaged segment needs to be replaced. This advantage helps local public transport bus companies reduce lifecycle costs.

MAN Lion's City Euro VI: pioneer in environmental protection

MAN has been constantly investing in the further development of the commercially successful MAN Lion's City bus family. Last year, in the Lion's City Euro VI, MAN launched the first city bus worldwide that complies with the mandatory emission standards going into effect on January 1, 2014. This reflects MAN’s commitment to fulfilling the demand of municipal bus companies wishing to put Euro VI buses into service early. MAN Euro VI buses meet the very highest emission requirements for inner city transport and are exceptionally economical at the same time.

The MAN Lion's City Hybrid: rigorous reduction of CO2 in cities

After its highly successful roll-out, the innovative MAN Lion's City Hybrid city bus is already operating in a large number of European communities. These cities provide practical evidence that the serial hybrid technology delivers savings potential of up to thirty percent, along with proof that MAN is putting the economical technologies of tomorrow on the road today. The continual braking and pulling-away at bus stops and traffic lights are exactly the areas where hybrid technology comes to the fore. Whilst conventional buses con-vert their braking energy to heat, the MAN Lion's City Hybrid stores braking energy in ultracaps and transforms it into power for its two electric drive motors. A finely tuned energy management system controls the energy flow and switches the diesel engine off, for example, during overrun operation or when the vehicle is stationary. Secondary energy consumers like the air-conditioner are electrically powered by the energy storage on the roof of the bus. The hybrid city bus thus emits no exhaust gases at bus stops and can pull away noiselessly under purely electrical power. This technology package makes the Lion's City Hybrid the most efficient option when it comes to CO2 emissions and pioneering the future of urban transport. With its serial hybrid drive, the low-floor bus saves up to 30 percent on diesel and CO2. In addition, thanks to its long engine switch-off periods and operation within the ideal speed range, the MAN Lion's City Hybrid achieves even better exhaust gas figures than a conventional EEV-compliant diesel vehicle.

CNG: alternative EEV and Euro VI-compliant drive technology

MAN is the market leader in natural-gas-powered city buses, supplying a range of Lion's City CNG models as solo or articulated buses in lengths from 12 to 18.75 metres. The portfolio also includes chassis for city and intercity buses, and CNG engines from 162 to 228 kW (220 to 310 hp) for external customers. CNG engines and buses from MAN can also be run on treated biogas, which makes operation CO2 neutral. CNG buses also run particularly quietly because combustion in the gas-powered engine, like its petrol-driven counterpart, is initiated by spark plugs and therefore smooth as silk.

With their three-way catalytic converter and lambda=1 control, the CNG engines from MAN meet the Euro VI exhaust-gas standard without additives or particulate filters. However, Euro VI registration for these vehicles, just as for diesel-powered vehicles, also requires the monitoring of in-use-compliance. For registration in accordance with Euro VI, the sensors, actuators and function of the three-way catalytic converter have to be monitored. Starting with the IAA 2012, Euro VI-compliant CNG buses from MAN will go on order and be available in the course of 2013.