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Mercedes Launching New Four-Cylinder Diesel Family; First Application in the New C250 CDI BlueEFFICIENCY Prime Edition

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The C250 CDI BlueEFFICIENCY

Mercedes-Benz is introducing a new four-cylinder diesel engine generation starting this fall with a 2.2-liter version applied in the new limited-production C 250 CDI BlueEFFICIENCY Prime Edition.

The engine delivers 150 kW (204 hp) of power and 500 Nm (369 lb-ft) of torque, and accelerates the Prime Edition from 0 to 100 kph in 7.0 seconds, with a top speed of 250 kph (155 mph). Fuel consumption is an average of 5.2 L/100km NEDC (45 mpg US), with CO2 emissions of 138 g/km.

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Under the hood of the Prime Edition. Click to enlarge.

In addition to its solid power output, the new engine offers significantly improved torque build-up from low engine speeds compared to its predecessor model. In everyday driving situations, this capability enables low-consumption driving at low engine speeds.

Mercedes is positioning the new engine as a leader in untreated exhaust emissions. The engine already complies with the future Euro 5 emissions standards and, beyond that, has the potential to comply with the Euro 6 and US Tier 2 Bin 5 standards as well.

Technology features of the new engine include:

  • A maximum ignition pressure of 200 bar;

  • Fourth-generation common-rail technology with a rail pressure increased by 400 bar to 2,000 bar, as well as a new piezo-injector concept with direct nozzle needle control for greater flexibility in injection timing, leading to smoother running of the engine;

  • Larger, variable oil spray nozzles and variable water pump; and

  • Dual-stage charging.

Another design innovation is the positioning of the camshaft drive at the rear. With a north-south installation design and the hood rising towards the rear, this positioning makes it possible to comply even better with pedestrian protection regulations.

The engine is compact, enabling it to be fitted in different installation spaces. Beginning in 2008, this new four-cylinder diesel engine will replace four of the existing diesel engines at Mercedes-Benz. It can be installed either lengthways or crossways in various model series, and several power rating variants will be available.

Apart from the C-Class, the engine will also be installed in the E-Class, in the new GLK-Class and in the future E-Class Coupé. The new engine will replace higher-displacement engines in heavier vehicles, where it will be able to reduce consumption effectively through this downsizing.

In the Mercedes-Benz C 250 CDI BlueEFFICIENCY Prime Edition, the new diesel engine is combined with a sporty six-speed manual transmission with overdrive. Additional measures to lower fuel consumption include:

  • Aerodynamic finishing touches, with particularly airflow-enhancing exterior-mirror housings as well as smooth underbody cladding;

  • Newly developed tires that reduce rolling resistance by 10 percent; and

  • An efficient energy-management system with adaptive power steering, which with the help of an additional valve, closes the flow of the power-steering pump when it is not required.

To support eco-driving behavior, a newly-developed gearshift display on the dashboard assists the driver by informing him or her of the best moment to shift gear in order to save fuel. In addition to this gearshift recommendation, the instrument cluster shows the precise current fuel consumption.

The basis of the new C 250 CDI BlueEFFICIENCY Prime Edition is the C-Class sedan of the AVANTGARDE equipment line. Production of the C 250 CDI BlueEFFICIENCY Prime Edition is limited to 5,000 units.

Comments

Nick

Put this engine into the Chrysler minivan instead of the 4.0L gasser--oops, Chrysler is on its own now...

GdB

Nice! A great alternative to those stupid SUV's for the image hypersensitive!

stas peterson

I wonder if Chrysler gets some of these four cylinder small 2.2 diesels.

I know that Mercedes is getting some of the production of the new ultra modern "Phoenix V6". The 3.0-4.0 liter, all alloy, DOHC, VVT, GDI, that Chrysler is building new factories for and starting production next model year. Mercedes has planned to replace all its V6 engine lines with "Phoenix" engines.

Jorge

Who needs more than 369 lb-ft of torque ?
Who needs more than 4 cylinders ?

DieselHybrid

Three cheers if this is meant for US consumption!

Silence...

Why do I get the feeling this is another Euro-market-only thread?

Craig

155 mph top speed in a car that can achieve 45 mgp!? I wish it was available in the States.

Henry Gibson

Why not reduce the engine to one cylinder and piston and use the INNAS HYDRID system. Just imagine bragging about a one piston car. It is hard enough to do with four. ..HG..

eric

"Why do I get the feeling this is another Euro-market-only thread?"

MB say the engine is T2B5-capable, so expect it Stateside unless US emissions standards are made even more unrealistic than they already are.

Raymond

If this engine is compatible with EPA Tier 2 Bin 5 rules, don't be surprised that M-B shows this very model at NAIAS in January 2009 to be available fall 2009 as a 2010 model.

Andrew

We can purchase a 155mph amoured tank and drive it anywhere we want on public roads. It is potentially lethal to other (less well protected road users). It is always primed and ready for illegal speeding activity.

A "lightly armoured" Electric NEV is speed regulated and restricted to limited areas for safety reasons. Whose safety is being protected?

Oh well... The right to carry arms is in the constitution.... Get me a bigger gun!

"We can purchase a 155mph amoured tank and drive it anywhere we want on public roads. It is potentially lethal to other (less well protected road users). It is always primed and ready for illegal speeding activity.

A "lightly armoured" Electric NEV is speed regulated and restricted to limited areas for safety reasons. Whose safety is being protected?

Oh well... The right to carry arms is in the constitution.... Get me a bigger gun!"

huh what planet do you live on? just because a car can do 155mph does not mean its "primed for death" if thats is the case then every 18 wheeler is a mobile genocide machine since even at 20 mph they can be fatal any vehicle smaller than another class 8 truck.

hansb

Let me see whether I get this right.

Between $30K - 45k for a Chevy Volt. If the battery needs replacing then what - another $5k - 10k. How long will this thing last?

A Mercedes C-Class in the same price range with the new diesel. Potentially able to go to 1 million miles with normal maintenance.

Sorry, Chevy, I'll go with the Mercedes!

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