24 June 2021
24 June 2021, Comments Comments Off on MAN TGE becomes more climate-friendly
MAN TGE becomes more climate-friendly

MAN Truck & Bus has a new engine control unit and revised AdBlue® injection to make its diesel engines cleaner and more economical.

Although electric drives in commercial vehicles will soon become normal, the combustion engine is still urgently needed and are being further developed. The MAN Truck & Bus TGE vans in class N1, i.e. up to 3.5 tonnes permissible total weight, already meet the Euro 6d emission standard required in the EU from 1 January 2022.

The difference between the previous Euro 6d temp and Euro 6d standards does not lie in the emission limit values themselves, but the permissible exceedance factor of the limit values in real road traffic (RDE = Real Driving Emission) changes. This indicates by how much the legal limit value for nitrogen oxides (NOx) may be exceeded between test bench test according to WLTP driving cycle and real driving operation. The overrun factor was reduced from 2.1 to 1.43 with Euro 6d.

The new MAN engines for the TGE up to 3.5 tons also score with a considerable reduction in fuel consumption and CO2 emissions. The reduction for all engines is between nine and 10 percent. In concrete figures for an L3H3 panel van (normal wheelbase, high roof) with an output of 103 kW (140 hp), this means that previously the CO2 emissions according to the WLTP measuring cycle were 253 g/km (9.7 l/100 km), from now on only 230 g CO2/km (8.8 l/100 km) are necessary. With the standard introduction of rolling resistance-optimized A-label tyres from the end of November this year, consumption will be reduced by a further 3 g CO2/km (8.7 l/100 km).

The Euro 6d engines have a newly developed exhaust gas cleaning near the engine, a new engine control system, an enlarged AdBlue® container with a capacity of 30 liters and a new exhaust system. The Euro 6d engines for the MAN TGE are now standard.

A new technology that comes into the vehicle with the Euro 6d engine is the SCR system called “Twin Dosing”. It is mainly responsible for the CO2 savings mentioned above. These result from the additional second SCR catalyst and a double SCR injection. (SCR = Selective Catalytic Reduction.) In twin-dosing technology, the reducing agent AdBlue® is injected into two reduction catalysts arranged one behind the other. One of them close to the engine in the exhaust gas cleaning module, the second away from the engine on the underbody of the vehicle. This concept ensures an effective reduction of nitrogen oxides at high and low exhaust gas temperatures.

In addition to the now even more economical 2.0-litre diesel engine, the MAN TGE is also available as an all-electric MAN eTGE and is convincing more and more customers in Europe with its locally emission-free drive.