- One of the world's most efficient power units
- Emissions already below the European standards of tomorrow
New E 300 BLUETEC Saloon, with which Mercedes-Benz is starting its BLUETEC initiative in the European market. This E-Class with the very latest emissions management, and excels with outstanding ecological, economic and dynamic attributes: the 155 kW/211 hp 3.0-litre V6 engine with a lavish torque of 540 newton metres is happy with just 7.2 to 7.5 litres of diesel fuel per hundred kilometres. Its emission values are already well below the European exhaust emission standards of tomorrow. The maximum speed of the E 300 BLUETEC is 244 km/h, and the sprint from zero to 100 km/h takes just in 7.2 seconds.
These outstanding figures are partly due to the standard 7G-TRONIC seven-speed automatic transmission. It features a number of technical innovations which ensure powerful acceleration, more rapid intermediate sprints, a lower fuel consumption and greater gearshifting comfort in conjunction with the ultra-modern engines. Owing to its ratio spread, the seven-speed automatic transmission also provides the ideal conditions for relaxed driving at low engine speeds - perfect for quiet and economical travel.
At the same time the BLUETEC model - like all the models in the E-Class - guarantees typical Mercedes suspension comfort, an almost legendary feel-good atmosphere in the interior and an outstanding level of safety.
Modular BLUETEC concept for clean exhaust gases
BLUETEC technology developed by Mercedes-Benz effectively reduces the emissions of diesel vehicles, and especially nitrogen oxides. The engineers at the Mercedes-Benz Technology Centre pursue various strategies to achieve this. As a first stage, the untreated emissions of the
E 300 BLUETEC are reduced as far as possible by in-engine measures which include:
• modified electronic engine management,
• a reduced compression ratio of 16.5 : 1,
• the use of special piezo-electric injectors with a lower hydraulic flow rate,
• optimal configuration of the turbocharger, with a variable nozzle turbine,
• improved control of exhaust gas recirculation, with a higher return rate,
• and the use of ceramic glow plugs, which ensure fast cold-starting at a lower compression ratio at all times.
As the second stage, an effective aftertreatment system specially configured for this engine supplements the in-engine modifications. This includes an oxidizing catalytic converter, which reduces emissions of carbon monoxide (CO) and unburned hydrocarbons (HC).
The third measure is an additive-free diesel particulate filter. This has been standard equipment in all Mercedes-Benz diesel models in many countries since summer2005, and reduces particulate emissions by up to 98 percent. This easily meets both the current EU4 particulate limits (0.025 grams/kilometre) and the future EU5 limits (0.005 grams/kilometre), and also complies with the current US standard.
As a fourth stage it is necessary to reduce the concentration of nitrogen oxides, which is inherently higher in the untreated emissions of diesel engines then in petrol engines. A further development of the storage-type NOX catalytic converter is combined with an SCR catalytic converter and patented onboard generation of ammonia. The Selective Catalytic Reduction (SCR) process is currently the most effective exhaust gas aftertreatment method known, enabling nitrogen oxides to be reduced by up to 80 percent. The BLUETEC aftertreatment system in the E 300 BLUETEC operates with no additional service fluids. |
