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Mercedes-Benz Launches Euro-5 BLUETEC in Europe
2007-8-20
Mercedes-Benz is introducing its BLUETEC
diesel emissions reduction technology in a passenger car model in Europe with
the new compliant E300 BLUETEC. (Earlier post.) Based on the CDI E300, this
BLUETEC diesel meets Euro 5 emissions standards, which will come into effect in
2011.
DaimlerChrysler first introduced BLUETEC into the US market in autumn 2006 with
the E320 BLUETEC. The NOx limit—a particular area of focus for BLUETEC�?in Euro
5 is less stringent than in the US Tier 2 Bin 5 standards: 0.18 g/km in Euro 5
vs. 0.04 g/km in Tier 2 Bin 5. Euro 6 (to be applied in 2016) brings the NOx
level down to 0.08 g/km—still above the T2B5 limit.
The 3.0-liter V6 engine in the E300 develops 155 kW/211 hp and 540 Nm (398 lb-ft)
of torque, with fuel consumption of 7.3 liters per 100 kilometers (32 mpg US).
The E 300 BLUETEC accelerates from 0 to 100 km/h in 7.2 seconds and is capable
of a top speed of 244 km/h (152 mph).
Among the measures taken to reduce engine-out emissions in the E300 are:
�?A reduction in the compression ratio to 16.5:1;
�?Ceramic glow plugs to ensure quick cold starts every time for the
reduced-compression engines;
�?Special piezo injectors with reduced hydraulic flow;
�?Optimized exhaust gas turbocharger with variable turbine geometry; and
�?Optimized exhaust gas recirculation control with raised return rate.
An oxidation catalytic converter cuts emissions of carbon monoxide (CO) and
unburned hydrocarbons (HC) and an additive-free diesel particulate filter
handles PM emissions. A NOx storage catalytic converter with a patented onboard
ammonia generation system teams up with an SCR catalytic converter to enable the
low nitrogen oxide emissions. This exhaust gas treatment system works without
the need for any additional equipment.
Source:
www.greencarcongress.com