Yes.


The DC press text reads:

New V6 diesel engine by Mercedes-Benz:
Agility and driving pleasure as standard

Stuttgart, Dec 16, 2004
Mercedes-Benz is presenting a new V6 diesel
engine which will replace the previous in-line
five and six-cylinder engines from spring 2005.
With an output of 165 kW/224 hp and a maximum
torque of 510 Newton metres, the Mercedes
six-cylinder is one of the most powerful units
in its class. Thanks to the latest technology,
the exhaust emissions meet the stringent EU4
limits; in addition Mercedes-Benz equips the V6
engine with a particulate filter as standard in
Germany.
The concept of diesel driving pleasure achieves
a new quality with the new CDI engine. As the
successor to the five and six-cylinder in-line
engines it offers an increase in output and
torque of up to 38 percent, ensuring faster
acceleration, brisk intermediate sprints and a
higher top speed. The maximum torque of 510
Newton metres is already available from 1600 rpm,
and remains constant up to 2800 rpm. Accordingly
the new V6 has torque characteristics which are
unsurpassed in this displacement class. In
combination with the unique 7G-TRONIC seven-speed
automatic transmission, this ensures the best
possible exploitation of the remarkable output
and torque potential in any driving situation.

Despite a significantly higher output, the fuel
consumption remains at the exemplary level of
the previous five and six-cylinder diesel engines.

The choice of materials, design, fuel injection
and engine management system reflect the state of
the art. As a world first for a diesel engine in
this displacement and output class, Mercedes-Benz
has developed an aluminium crankcase with cast-in
grey iron cylinder liners for this unit which
makes a major contribution to weight reduction. As
a result, the new V6 weighs a total of only approx.
208 kilograms (acc. to DIN) and is therefore only
very slightly heavier than the previous
five-cylinder engine. The power-to-weight ratio has
increased by more than 20 percent to 0.79 kW/kg –
a major contribution to the outstanding diesel
agility offered by the new engine.

The engine block, components and ancillary units
form a very compact entity, which means that in
future the new V6 will also be installed in Mercedes
model series and 4MATIC variants where no
six-cylinder diesel engine was previously offered.

Fuel injection at 1600 bar and innovative piezo
injectors

Mercedes engineers have refined the common-rail
direct injection system, achieving further progress
in fuel consumption, exhaust emissions and combustion
noise with this third-generation technology. Newly
developed piezo injectors operate much more rapidly
and precisely than the previous solenoid valves, and
ensure a particularly finely metered fuel supply to
the cylinders. This allows the fuel injection to be
even more precisely adjusted to the current load and
engine speed, and now makes five injections per power
stroke possible at a peak pressure of up to 1600 bar.

Electrically controlled intake port shut-off modifies
the turbulence of the intake air as it enters the
cylinders, optimising the combustion process with the
aim of further reducing the fuel consumption and
exhaust emissions.

The likewise new electronic control unit manages all
the engine functions – from the quick-start glow system
and automatic start function to control of the
high-pressure pump. The VNT turbocharger (Variable
Nozzle Turbine) with electrically adjustable turbine
blades, exhaust gas recirculation with a control valve
and intake air throttling are regulated as the situation
requires on the basis of measured data. In addition the
microprocessor exchanges data with the seven-speed
automatic transmission and the Electronic Stability
Program.

Exhaust emissions at EU4 level, particulate filter
as standard in Germany

Thanks to this precise engine management system, the
nitrogen oxide and particulate emissions of the V6
engine are within the strict limits of the EU4 standard.
Two oxidising catalytic converters are responsible for
conversion of the carbon monoxide and hydrocarbons: a
light-off converter located near the engine and a main
converter in an underfloor location.

To reduce soot emissions even further, Mercedes-Benz
offers a maintenance-free particulate filter system
which is standard equipment for the V6 engine in Germany,
Austria, Switzerland and the Netherlands. The filter is
purged without the use of additives by selective
adjustment of different engine functions. Depending on
the operating parameters and filter condition, the
variable third-generation common-rail technology allows
up to two precisely coordinated post-injections with the
aim of specifically increasing the exhaust temperature.
This means that the particulates trapped in the filter
are burned off in a controlled manner.

End of DC press text, Dec 17 2004

The key data of the V6 engine at a glance:
Cylinder arrangement V6
Cylinder angle 72°
Valves per cylinder 4
Displacement 2987 cc
Bore/stroke 83/92 mm
Dist. between cylinders 106 mm
Compression ratio 18 : 1
Output 165 kW/224 hp at 3800 rpm
Max. torque 510 Nm at 1600-2800 rpm*
*In conjunction with 7G-TRONIC
(Source: Another DC press text, Dec 17 2004)

Available from March 2005 (Europe at least)

Juergen