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Mercedes-Benz F700 Research Vehicle
Mercedes loads its latest concept car with advanced technology

Concept cars are manufacturers’ way of showing consumers what to expect from production vehicle in the near future. Some concept cars, such as Porsche's 1993 Boxster Concept, foreshadow styling for a future production model. Other concepts like the Toyota Hybrid X introduce a wealth of technologies that will likely filter down to production models.

Mercedes' latest concept represents the latter (and perhaps a touch of the former). The new F700 Research Car is loaded with just about every piece of technology that Mercedes could possibly cram into a vehicle.

Starting with the drivetrain, the F700 Research Car uses a tiny 1.8 liter direct-injection "DIESOTTO" four-cylinder gasoline engine. Now before you drop your jaw in amazement of such a small motor being used in a large luxury cruiser, also take note of the use of sequential turbocharging along with a dual-mode hybrid system similar to the one use in the Chevrolet Tahoe Hybrid and BMW X6 ActiveHybrid.

The end result is a remarkable 238HP from such small displacement gasoline engine -- the electric motor adds an additional 20HP. 258HP isn't a lot of power when you consider that Mercedes' S65 AMG produces 604HP and a stump-pulling 738 lb-ft of torque, but it is enough to propel the F700 Research Car to 60 MPH in "only" 7.5 seconds.

The efficient powertrain does payoff, however, when it comes to fuel economy and greenhouse emissions. The F700 Research Car consumes only 5.3 liter of gasoline every 100 kilometers (equivalent to 44.3 MPG) and emits only 127 grams of CO2 per kilometer.

"Our goal is to make the gasoline-powered car just as economical in consumption as the diesel. The new DIESOTTO concept is a major step in that direction, combining the best properties of the spark-ignition engine and the diesel engine," said Daimler Chrysler board member Dr. Thomas Weber.

"Researchers and developers need challenges and great goals," Weber continued. "For this reason we think much farther ahead at Mercedes-Benz: we are going to combine the strengths and advantages of both combustion principles in one innovative engine concept. The DIESOTTO drive is a major step forward."

Mercedes didn't stop with the powertrain. The F700 Research Car features LED lighting front and rear, Active PRE-SCAN suspension for better handling and ride comfort, Active Body Control, displays screens mounted in the front seat headrests and a 20" 3D LCD monitor for the rear passengers.

Mercedes has also developed a new control interface to replace its trusty old COMMAND system. The F700 Research Car makes use of a new SERVO-HMI (Human-Machine Interface) system. SERVO-HMI displays vehicle information at the base of the windshield and does away with traditional HVAC and multimedia controls. The positioning of vehicle information allows the driver to keep his or her eyes focuses straight ahead instead of towards the center console.

Other critical vehicle controls such as the DISTRONIC PLUS active cruise control system are accessed through a scroll wheel mounted on the steering wheel. Mundane operations such as turning on headlights, windshield wipers and front/rear defroster are all accomplished automatically using sensors.

The HMI interface is headlined by a young female avatar which can be viewed on the display and interacts both visually and by voice.  The avatar can perform as a virtual assistant and is capable of accessing address books, online databases and can even read email messages aloud to the driver.

While we probably won't see all of the features introduced with the F700 Research Car in future Mercedes models, rest assure that the DIESOTTO engine, PRE-SCAN system and Servo-HMI will likely make the cut.

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RE: Appearance better suited for the Maybach name
By acer905 on 9/12/2007 7:27:11 AM , Rating: 2
The biggest problem with a tiny engine such as this is simply the speed they have to run at to offer the power. My car has a 2.2L I-4. And just to run freeway speeds i'm running at 3k rpm. Constantly running an engine at these speeds will wear it out much faster than say running a V8 which can easily run 1200-1500 at the same speeds (in a much heavier vehicle too)

Also, nothing beats the sound of a 7.0L V8 at full throttle with true dual exhaust... Gotta love the Corvette

By Hoser McMoose on 9/12/2007 11:03:30 AM , Rating: 2
Constantly running an engine at these speeds will wear it out much faster than say running a V8 which can easily run 1200-1500 at the same speeds

If all else where equal, what you say might be true, however all else is never equal.

Honda and Toyota (among others) have both managed to produced EXTREMELY reliable engines that are designed to run 3k+ rpm for extended periods of time.

Generally speaking these days every other part of the car will wear out before the engine will unless you're either not maintaining it properly or abusing the crap out of it.

By theapparition on 9/12/2007 1:02:20 PM , Rating: 2
Running any part at higher rotational speed hastens fatigue. Now the question is, does this fatigue reduce the life from 10 years to 3 (signifigant). Or from 100 years to 30 (meaningless).

Yes, I know years is not the proper measurement, but I was trying to make a point as simple as possible.

By DeepBlue1975 on 9/12/2007 3:19:41 PM , Rating: 2
3k is actually on the low speed for most european and japanese engines.

I know many people driving frequently beyond 4000rpm and having engines that keep going on with not more than standard maintenance for 200.000 miles or more.

The one thing for what you say, though, is that being able to cruise at 1500rpm will give you a much more quiet ride than having to go at 5000rpm. High engine noise becomes very disturbing in long trips.

By wired00 on 9/13/2007 2:52:03 AM , Rating: 2
my god, we're all doomed if there are many more people with your attitude!

subaru's which yes will cruise on a higher rpm than a v8 will last WELL over 250 thousand Kms. v8's are certainly a old technology which simply can't last into the future. They simply use too much fuel.

Once consumer available oil dries up we'll no doubt be using either small engine diesel cars running on biodiesel or hybrid electic/diesel. Any available farm grown ethernol will be soaked up by the air transport industry.

By Spoelie on 9/13/2007 4:11:10 AM , Rating: 2
I like a high revving engine's sound a lot better

but yes, it is a nice sound, only 'nothing beats' should be left out.

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