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Mercedes Diesel Engines
Krysztof's ML400 CDI
| Volkswagen unveils BlueTDI for America with CPEMS
VW introduced the production version of
the Jetta BlueTDI, their next-generation four cylinder turbodiesel,
developed for the North American market. VW added piezoresistive
cylinder pressure sensors to optimise the combustion in each cylinder
individually (earlier mention), dual
circuit EGR and a maintenance-free nitrogen oxide trap to meet 50 state
regulations, while also improving the fuel efficiency compared to the
predecessor.
April 24, 2008
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| Mercedes introduces new four cylinder diesel: OM651
The new generation of four-cylinder diesel engines from
Mercedes-Benz leads the way, and takes performance, consumption and
emissions into a new dimension. Among the many technical feats
it introduces regulated two stage turbocharging to Mercedes-Benz
passenger diesels. This innovative powerplant will premiere in
the C-Class this fall, then in the new E-Class (W212) in the spring
of 2009, the GLK in April 2009, and is also planned for the Sprinter.
It's not yet known if this engine will be introduced in North America.
Continue to the press release
April 10, 2008
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Mercedes introduces 3 diesels with AdBlue SCR in America
Finally Mercedes brings three BlueTEC SUVs to America,
the R 320 BlueTEC, the ML 320 BlueTEC and the GL 320 BlueTEC.
They are powered by an up-to-date V6 engine featuring
BlueTEC technology with AdBlue injection - so they
can be offered in all 50 states.
Continue to the press release
March 13, 2008
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The good oil
Using a special sensor, Daimler researchers
will in future be able
to directly monitor oil quality on board a vehicle; maintenance intervals
will thus be extended by around 25 percent. The oil's speed of flow, for
instance, gives an indication of its degree of contamination and thus of
its lubricative quality within the engine. What can be conveniently
measured here in the laboratory is determined by other means by the
scientists on board the moving vehicle, where they calculate the oil's
viscosity on the basis of its side-to-side movement inside the sump.
March 12, 2008
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| New diesels announced for model year 2009 |
Audi Q7 3.0 TDI | 3.0 liter V6 turbo | late 2008 to early 2009 |
BMW 335d | 3.0 liter I6 twin turbo | fall 2008 |
BMW X5 xDrive 35d | 3.0 liter I6 twin turbo | fall 2008 |
Jeep Grand Cherokee CRD BlueTEC | 3.0 liter V6 turbo | model year 2009 |
Mercedes-Benz GL320 BlueTEC | 3.0 liter V6 turbo | August/September 2008 |
Mercedes-Benz ML320 BlueTEC | 3.0 liter V6 turbo | August/September 2008 |
Mercedes-Benz R320 BlueTEC | 3.0 liter V6 turbo | August/September 2008 |
Volkswagen Jetta BlueTDI | 2.0 liter I4 turbo | summer 2008 |
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Daimler's goal: Be leading European turbocharger supplier
Daimler says it has relied too much on
its turbocharger suppliers. Now it plans to become a leader in the field.
"Not long from now, we will be Europe's third-largest turbocharger supplier,"
says Leopold Mikulic, head of passenger-car engines and powertrains at Daimler.
The Nikkei reports the joint venture between Daimler and IHI will build
a new plant in Thüringen near Daimler's engine plant in Kölleda.
As early as 1885 Gottlieb Daimler and Rudolf Diesel investigated
precompressing the combustion air. The breakthrough with passenger car
diesels occurred in 1978 when Mercedes-Benz introduced the turbocharger
shown at left in the 300SD.
January 9, 2008
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MBUSA announces BlueTEC SUVs for August/September 2008
MBUSA plans to double their diesel sales with the upcoming launch of
the BlueTEC SUVs according to several press reports citing MBUSA.
The ML320 BlueTEC, R320 BlueTEC
and GL320 BlueTEC are expected in August
or September of 2008 and will be offered in all 50 states. The engine
just garnered the coveted Ward's Auto 10 Best Engines award for 2008,
after being thus honored in 2007. Bill Visnic, Ward's Auto World senior
technical editor, commented: "The powerful and frugal new diesel V6 produces
torque that far surpasses gasoline engines of similar size while providing
25% better fuel economy."
December 14, 2007
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| Freightliner Sportchassis P2XL, P4XL
The P2XL 'ultimate pickup truck' features a standard full size
pickup bed on a Freightliner M2 106 chassis. It's powered by a
7.2 liter Mercedes-Benz diesel, the OM926 DE72 LA, called MBE 900 in
North America. Its regulated dual stage turbocharger features an
innovative electric actuator to control the bypass valve, and milled
titanium impellers. Optional are the Cummins ISC or MBE 4000.
The new 4X4 Sportchassis P4XL sits 8" higher. An engine teardown
after 780,000 miles confirms the durability.
P2XL and P4XL engines |
MBE 900 | 7.2L 330 hp @ 2200 rpm | 1000 lb-ft @ 1300 rpm |
Cummins ISC | 8.3L 330 hp @ 2000 rpm | 1000 lb-ft @ 1400 rpm |
MBE 4000 | 12.8L 450 hp @ 1900 rpm |
1650 lb-ft @ 1100 rpm |
November 25, 2007
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| Mercedes-Benz starts TrueBlueSolutions program
With the introduction of the E300 Bluetec in Europe Mercedes-Benz
is launching a new sustainability
marketing program. Under the heading 'TrueBlueSolutions' Mercedes-Benz
will showcase BlueTEC, BlueTEC Hybrid, technical advances for gasoline
engines such as Stratified-Charge Gasoline Direct Injection (CGI), DiesOtto,
or fuel cell powered automobiles and more.
October 30, 2007
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VW and Mercedes-Benz running on sundiesel produced from biomass.
| Alternative Fuels: Sundiesel plant in the USA?
Daimler, Shell and Volkswagen recently
invested in CHOREN, a biomass to liquids
(BTL) diesel producer. CHOREN is building a 15,000 ton per year pilot
plant in Freiberg which starts operation in mid 2008 and is to supply
first fill diesel fuel for new Mercedes-Benz automobiles
(earlier mention).
CHOREN plans a broad sundiesel market introduction.
There is a chance a 200,000 ton per year plant, one of their
"SIGMA" plants, might be built in the USA.
Sundiesel is a clean sulfur free and aromatic free synthetic diesel consisting
of only 10 chemical compounds instead of 400 in conventional diesel fuel,
and performs well in Mercedes-Benz, Audi and Volkswagen diesel engines.
BMW may join in the future.
October 21, 2007
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| Daimler Trucks introduces new DD15 heavy duty platform
The new 14.8 liter inline six heavy duty diesel
combines performance,
economy and serviceability and is the result of 5 years of development,
involving up to 400 Daimler engineers on three continents. This innovative
powerplant family features an amplified common rail system, turbo
compounding without wastegate, and compacted graphite iron cylinder
blocks, cast at Daimler's foundry in Mannheim.
The DD15 is expected to debut on the Freightliner Cascadia in 2008. The 12.8
liter DD13 and 15.6 liter DD16 should follow in 2009-2010.
October 19, 2007
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In California the E320 BlueTEC is lease-priced on a par with
its gasoline sibling, the E350. Only 100 automobiles will be made
available initially.
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Mercedes-Benz is First to Bring Diesel Back to California
LOS ANGELES. On the runway at this week's
Mercedes-Benz FashionWeek at Smashbox Studios, Mercedes-Benz USA
unveiled
a version of its E320 BlueTEC, a diesel sedan that will
immediately be available in limited numbers to California customers
through a special two-year/24,000-mile lease.
"In order to be able to provide the power and economy of diesel
technology throughout the world, we had to make the diesel version as clean
as the gasoline model. With BlueTEC, the nitrogen oxides can be reduced to such
an extent that our diesel vehicles will satisfy the strictest emission
regulations in the world -- even in the future. This makes Mercedes-Benz
the first manufacturer in the world to fully bring all exhaust gas
components under control," said Dr. Leopold Mikulic, head of powertrain
development at Mercedes-Benz Cars. The E320 BlueTEC uses the NSK Advanced
version of BlueTEC.
October 15, 2007
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Volkswagen to show 2009 Jetta BlueTDI on Dieselution Tour
Volkswagen shows the new Jetta TDI efficient diesel on their Dieselution
tour together with the 3.0 liter V6 Touareg TDI. The tour will last
four months and include the 2008 Super Bowl. It also exhibits
VW racing successes on the Baja 500, Pikes Peak and Dakar, with
their tough TDIs. As expected the Jetta BlueTDI will go
on-sale across America in 2008
(earlier mention).
September 27, 2007
The Future of Diesel at Chrysler
Over on the Chrysler blog Executive VP Frank Klegon
confirmed
that in addition to the Sprinter,
Jeep Grand Cherokee CRD
and the Dodge Ram Heavy Duty, Dodge will introduce an all-new
Cummins turbodiesel engine in the Ram 1500 after 2009. This new
engine will also meet emissions standards in all 50 states
and will provide up to 30 percent improvement in fuel efficiency
compared to an equivalent gasoline engine. Starting in model year 2009,
the Jeep Grand Cherokee diesel will meet emissions standards in all 50
states, making it another BlueTEC vehicle from Chrysler.
Two-thirds of their European sales are diesels, and Chrysler is also
exploring additional models powered by Mercedes 3.0 liter V6 turbodiesel,
and the possibility of a four-cylinder diesel, as mentioned
earlier.
"So when we say we intend to remain the leaders in diesel, we mean it.
And drawing on the diesel expertise of partners like Mercedes-Benz
and Cummins, we intend to keep building on our diesel leadership in
the years to come!" - Frank Klegon, Chrysler Executive VP - Product Development
September 10, 2007
| Will Mercedes make a ML320 CDI Triturbo?
For the M-Class facelift expected in 1 to 2 years Mercedes may
pull the triturbo diesel out of the hat once again. The
concept was first shown in Geneva in 2005, then based on the
Vision SLK 320 CDI Triturbo
(earlier mention) and rocketed
the roadster in a mere 5.3 seconds to 100 kilometers per hour while
exceeding 31 MPG.
Regulated two stage charging with two small turbines outside the
cylinder banks on either side, team with a third large one placed in
the center of the Vee to accomplish this feat.
| |
OM642 DE30 3LA |
| SLK 320 CDI Triturbo |
| V6 (72° V angle) |
displacement | 2987 cc |
power | 286 hp |
torque | 465 lb-ft |
turbos | triturbo: 2 small, 1 large |
August 18, 2007
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The Mercedes-Benz I6 versus V6 turbodiesel
Model year 2005 and 2006 E320 CDI inline six cylinder engines have
grey cast iron blocks and multivalve high-strength aluminum heads.
Let's compare with the model year 2007 V6 turbodiesel, featuring an
aluminum crankcase with cast-in grey iron cylinder liners.
The V6 power and torque increase slightly and maximum torque starts
at a low 1600 revolutions per minute. The plot shows the European
E320 CDI V6.
Optimized air flow with swirl by electric controlled intake port
shutoff and electric controlled variable nozzle turbine (VNT)
turbocharging contribute to this performance.
The I6 has inherently lower vibrations, while the V6 relies on a
counter rotating balancer shaft to compensate.
| |
OM648 DE32 LA |
OM642 DE30 LA |
| 2005/2006 E320 CDI | 2007 ML320 CDI
2007 R320 CDI
2007 GL320 CDI |
| I6 (inline six cylinder) | V6 (72° V angle) |
valves per cylinder | 4 | 4 |
displacement | 3226 cc |
2987 cc |
bore/stroke | 88 x 88.34 mm | 83 x 93 mm |
compression | 18.0:1 | 16.5:1 |
power | 201 hp @ 4200 rpm | 215 hp @ 3800 rpm |
torque | 369 lb-ft @ 1800-2600 | 398 lb-ft @ 1600-2400 |
injection pressure | 1600 bar | 1600 bar |
resources | 73 pages, pdf file | 11 pages, pdf file |
August 11, 2007
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Mercedes-Benz launches Euro 5 BlueTEC in Europe
Mercedes announced more details about the first Bluetec passenger
car to be released in Europe later this year. It's based on the E320 CDI
and retains the same favorable consumption figures. The 3.0 litre V6
engine develops 155 kW/211 hp and 540 Nm of torque while burning just
7.3 litres* of diesel per 100 kilometres. The E300 BlueTEC accelerates
from 0 to 100 km/h in 7.2 seconds* and is capable of a top speed of
244 km/h* (* provisional data). The E300 Bluetec likely retains
the 2.47:1 rear ratio from the Euro E320 CDI, differing from the 2.65:1
rear axle installed on US models. The initial step of the formation of
nitrogen oxides in the E300 BlueTEC has been reduced through optimisation
measures inside the engine:
A reduction in the compression ratio to 16.5:1
The use of special piezo injectors with reduced hydraulic flow
An optimised exhaust gas turbocharger with variable turbine geometry
Optimised exhaust gas recirculation control with raised return rate
The use of ceramic glow plugs, which ensure quick cold starts every
time for reduced-compression engines
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Current and future emissions limits for diesel
vehicles in the EU* |
| |
CO (g/km) |
NOx (g/km) |
HC + NOx (g/km) |
Particulate (g/km) |
EURO 4 - All new vehicles from 1/1/2006 |
0.50 | 0.25 | 0.30 | 0.025 |
EURO 5 - Phase in: 9/2009 to 12/2010 |
0.50 | 0.18 |
0.23 | 0.005 |
EURO 6 - Phase in: 9/2014 to 12/2015 |
0.50 | 0.08 | 0.17 | 0.005 |
* Group M1, passenger-carrying vehicles with a maximum of
eight seats not including the driver's seat,
permitted gross vehicle
weight up to 2500 kg, NEDC 2000 test procedure
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Complementing the revisions carried out inside the engine is
an efficient exhaust gas treatment system tailored specially to the
E320 BlueTEC powerplant. This includes the oxidation catalytic converter,
which cuts emissions of carbon monoxide (CO) and unburned hydrocarbons (HC),
and an additive-free diesel particulate filter. A further developed NOx
storage catalytic converter with a patented onboard ammonia generation system,
teams up with an SCR catalytic converter and enables
extremely low nitrogen oxide emissions. This NSK Advanced exhaust gas
treatment system works without the need for any additional equipment.
August 10, 2007
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Mercedes introduces DiesOtto combined combustion concept
Mercedes combined the advantages of the diesel and the Otto gasoline
engine in a future engine demonstration. The 1.8 liter four cylinder
produces 175 kW (238 hp) and 400 Nm (295 lb-ft) of torque from low RPM
and would consume less than 6 liters per 100 kilometers (40 MPG US), and
this number does not pertain to a small compact but to a S-Class premium
automobile with full luxury and safety features, emphasizes Mercedes.
At startup and full load the DiesOtto utilises spark ignition, but in
part load switches
within one cycle to controlled auto ignition, running as efficient as a
diesel, but produces only minimal amounts of nitrogen oxides and particulates
mainly due to lower combustion temperatures. Thus a conventional 3-way
catalytic exhaust system is sufficient. The DiesOtto features electro
magnetic variable
valve actuation (earlier mention), variable compression,
downsized engine, direct fuel injection, turbocharging, stop-start or ISG
hybridisation - modules which are to be spread across Mercedes engines in
the coming years until series production of the complete concept is
finalized in the midterm.
July 24, 2007
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Audi to launch American Q7 TDI diesel in 2008
Audi developed a new 3.0 liter V6 diesel with 230 hp and 400 lb-ft
for the Q7 TDI which will launch in the USA in 2008.
It's the first application of the integrated piezoresistive cylinder
pressure sensor glow plug (earlier mention),
for powerful yet precise engine control, cooled EGR
and SCR to meet stringent American and European emission limits.
This comes on the heels of Audi's second win at the 24 hours LeMans
earlier this year. The R10 TDI shown at left is based on the same DNA.
Audi says these new diesels are the cleanest in the world, boasting
sublime dynamism combined with relatively low fuel consumption that is
the hallmark of any Audi.
July 18, 2007
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Diesel SUV update: 50 state versions coming next year
For model year 2008 Maine, Pennsylvania and Rhode Island join
the states where new passenger vehicle diesels can not be offered,
before the 50 state GL-, M- and R-Class turbodiesels launch in
model year 2009.
Mercedes developed the SCR system together with
HJS Fahrzeugtechnik
and Johnson-Matthey.
Long-time M-Class supplier Rehau
develops heated AdBlue lines
leading from the tank to the metering valve, while Eberspächer
prepares the double walled SCR cat. in this active SCR system.
Model year 2007: 45 state CDI
Model year 2008: 42 state CDI
Model year 2009: 50 state ML320, R320, GL320 Bluetec
Model year 2010: 50 state E320 Bluetec
July 11, 2007
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500.000th Mercedes Actros rolls off the line
The Actros was introduced in 1996 and the second version in 2003
and became the workhorse in many truck fleets. Half a million
have been manufactured. In early 2005 the Actros first introduced
Bluetec diesel engines achieving both lower emissions and lower fuel
consumption. More than 80,000 Bluetec trucks are currently on the road.
Continental Temic supplies Actros fuel injection technology since 1996.
Eberspächer/Purem supplies the AdBlue system
and Tenneco Edenkoben the integrated SCR muffler.
June 25, 2007
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DaimlerChrysler Truck and Fiat Powertrain start cooperation
DaimlerChrysler Truck Group and Fiat Powertrain
announced an 8 year cooperation. As a first step Fiat Powertrain
will supply the diesel engines for the new Mitsubishi Fuso Canter
light commercial vehicle to be marketed in major markets including
Japan and Europe. Fiat will supply 80,000 F1C 3.0 liter inline four
turbodiesels
rated at 177 hp at 3500 rpm and 400 Nm (295 lb-ft) at 1700 rpm to Fuso
starting in 2009. Mitsubishi Fuso will remain the hybrid competence center
within the truck group (earlier mention).
June 19, 2007
GM announces 4.5 L V8 Tier 2 Bin 5 clean diesel
GM joins the clean diesel bandwagon and announces a new powerful
and fuel efficient Duramax 4.5 liter V8 turbodiesel to be produced
in New York for their pickup trucks under 8600 lbs GVW and
the Hummer H2. It has aluminum cylinder heads with integrated
manifolding, a VNT turbocharger with intercooling and is GM's first
engine to use a selective catalytic reduction NOx aftertreatment
system and particulate filter. It will deliver 310 hp
and 520 lb-ft of torque. The block is made of compacted graphite
iron (CGI) supplied and machined by Tupy SA in Brazil, before assembly
in Tonawanda. Production is expected to start in 2009.
June 15, 2007
Mercedes, Honda clean diesels in Japan
Honda may offer diesel engines in Japan starting in 2009 despite
the relative unpopularity of diesel cars in the world's
third largest auto market reports Nikkei Business News. Honda
hopes the cleaner diesel engine could help it clear Japan's
stricter gas emissions regulations. Only 0.1% of passenger cars
sold in 2006 in Japan were diesel as few models were available
and many Japanese consumers still see them as being dirty and noisy.
Nissan, Toyota, Subaru and Suzuki are also working on clean diesels.
So far DaimlerChrysler is the only one to offer fuel efficient
low emission diesels in Japan like the E320 CDI sedan and the
E320 CDI station wagon introduced there last August. Sales
are reportedly exceeding expectations.
Mercedes-Benz Clean Diesel info site in Japan
June 13, 2007
New 4 cylinder diesel OM651 to debut in March 2009
JESMB reports the
new OM651 inline 4 diesel will debut with the new E-Class (W212)
in March of 2009. It's not yet known if a Bluetec model of this engine
will be introduced in North America. These versions are expected:
200 CDI with 136 hp and 330 NM (1 VNT turbocharger)
220 CDI with 170 hp and 400 NM (1 VNT turbocharger, maybe regulated two stage R2S)
250 CDI with 200 hp and 480 NM (temporarily 500 NM in overboost mode, regulated two stage R2S turbochargers)
The higher figure of 204 hp in the S-Class Bluetec study is due to a double flowed exhaust system. The new E-Class is to have a single flow system.
This engine was already mentioned earlier.
June 8, 2007
DaimlerChrysler releases new smart fortwo cdi
From the press release: "with fuel consumption of just 3.3 litres
per 100 kilometres, (NEDC, combined) and emissions of 88 grams of carbon
dioxide per kilometre the new smart fortwo cdi is the most economical
production car worldwide...." For a diesel-electric prototype based
on the previous generation smart fortwo cdi an even better efficiency
of 2.9 liter per 100 kilometers - 81.1 MPG was achieved
(earlier mention). However for
the USA introduction in 2008 a gasoline version is planned.
smart fortwo info page
June 6, 2007
Mercedes-Benz diesel engines page 2
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