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Old 03-13-2007, 09:32 PM   #1
NYCshopper
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Default Mercedes-Benz E 200 NGT "The most powerful natural-gas-driven saloon ever"

Mercedes-Benz E 200 NGT "The most powerful natural-gas-driven saloon ever"



Press Release:
Quote:
E 200 NGT: environmentally friendly solution with bi-fuel drive

Stuttgart, Mar 07, 2007
With CO2 emissions reduced by more than 20 percent and a more than 50 percent reduction in operating costs, the Mercedes-Benz E 200 NGT has been available since the spring of 2004. As well as making it one of the most cost-effective models in the Mercedes range, the 120-kW/163-hp four cylinder engine under the bonnet of the bi fuel E 200 NGT also makes it the most powerful natural-gas-driven saloon currently in production. Natural-gas-powered vehicles are a key element of DaimlerChrysler's overall concept for reducing fuel consumption and CO2 emissions, and for safeguarding a sustainable form of mobility.

The E 200 NGT (Natural Gas Technology) was developed at the Mercedes-Benz Technology Center on the platform of the E 200 KOMPRESSOR. The four-cylinder powerplant has a power rating of 120 kW/163 hp and generates a peak torque of 240 Newton metres. Thanks to the elaborate solutions which have been used to integrate the additional technical components, power delivery, comfort, quality and safety have not been compromised in any way aboard the E 200 NGT.

The E 200 NGT with its bi-fuel petrol/natural-gas power unit complies with the same stringent EU 4 emissions limits met by the petrol-powered E 200 KOMPRESSOR. In natural-gas operating mode, emissions of carbon dioxide are cut by over 20 percent compared to petrol operation.

Operating mode can be switched conveniently at the touch of a button

The E 200 NGT can be run on either natural gas or premium unleaded petrol, with the driver being free to decide which of the two drive sources should be deployed. The buttons in the multifunction steering wheel and the central display in the instrument cluster can be used to switch between natural-gas and petrol operation as required. Ensuring a smooth, jolt-free switch between modes is the task of a special electronic control circuit which orchestrates the changeover for each cylinder individually. A gauge in the instrument cluster's central display keeps the driver informed of the current level of gas in the reservoirs. Once the supply of gas has been exhausted, the system automatically switches back to petrol operation, so smoothly that the change is imperceptible to the vehicle's occupants. As soon as the reservoirs are refuelled with natural gas, the journey is automatically resumed in the gas operating mode.

Specific modifications to the supercharged TWINPULSE engine

The supercharged TWINPULSE engine was modified by the addition of injector nozzles on the underside of the intake manifold. A pressure regulator with sensor and electromagnetic shut-off valve is fitted near the engine to regulate the supply of natural gas and maintain the required system pressure at a constant level. The reprogrammed engine electronics ensure seamless operation in both drive modes. The E 200 NGT distinguishes itself from comparable models, which often deliver poorer performance in natural-gas mode, by matching the sophisticated four cylinder power unit's exemplary power and torque characteristics even when running on natural gas. This makes the E 200 NGT the most powerful saloon with a bi-fuel drive unit currently in series production.

This environmentally friendly variant of the E-Class is available in Germany, Austria, Italy, Sweden and Switzerland among other markets, and in a right hand drive version for Thailand and Singapore.

Key data and performance figures:

E 200 NGT Petrol drive Natural-gas drive
Displacement 1796 cc 1796 cc
Rated output 120 kW/163 hp
at 5500 rpm 120 kW/163 hp
at 5500 rpm
Peak torque 240 Nm
at 3000-4000 rpm 240 Nm
at 3000 rpm
0–100 km/h 10.7 s 10.8 s
Top speed 227 km/h 227 km/h
Fuel consumption 9.0 l/100 km* 6.1 kg/100 km**
CO2 emissions 215 g/km 168 g/km

*NEDC combined consumption; **for natural gas group "H"
Comprehensive crash testing to ensure trademark Mercedes safety

The two fuel sources are stored in a petrol tank with a capacity of 65 litres and four gas reservoirs with a total storage capacity of 18 kilograms respectively. The reservoirs are located in the spare wheel well in the boot, and behind the rear bulkhead. A comprehensive programme of crash testing has been carried out to ensure the high standards of safety that Mercedes is renowned for. The leak tightness of the gas reservoirs was subject to particularly rigorous scrutiny - after all, the natural gas that is pumped into the reservoirs during refuelling is compressed to a pressure of 200 bar.

When its fuel reservoirs are fully replenished, the total range of the E 200 NGT - based on the NEDC fuel consumption figures - is around 1000 kilometres, of which just under 300 kilometres are covered with the natural-gas drive and the remaining 700 kilometres with conventional petrol power. The saloon may also be equipped with an 80-litre petrol tank as an option, extending the maximum range to nearly 1200 kilometres.

Large boot capacity and the same high payload

With the gas reservoirs fitted, the boot has a load capacity of 400 litres (measured in accordance with the VDA method). In practical terms, this means sufficient stowage space for two jumbo suitcases plus two smaller travel cases. The payload capacity of the saloon with its five-speed automatic transmission is 510 kilograms – virtually the same as in the E 200 KOMPRESSOR.

When seen from the outside, the E 200 NGT with bi-fuel drive looks just the same as any other series-production E-Class saloon. The only difference is that the fuel filler flap is somewhat larger, concealing as it does not only the familiar filler neck for the petrol tank but also a special filler connection for the natural gas, which has been purpose-designed to ensure safe and convenient refuelling.

Costs halved in natural-gas operating mode

Quite apart from the drastic cut in CO2 emissions, running the vehicle on natural gas also holds economic benefits. At the present time, a kilogram of natural gas costs between € 0.80 and € 0.90 in Germany, which translates into a cost of between € 0.54 and € 0.60 per litre when equated with the energy provided by petrol. This makes natural gas over 50% more cost-effective than premium unleaded petrol. Furthermore, a range of financial incentives - such as tax benefits and subsidies by the gas suppliers - is on offer in Germany to assist with the purchase of natural-gas-powered vehicles.

Natural gas represents a feasible alternative to petrol and diesel, both from an ecological and an economic point of view. The fact that it is a primary form of energy allows it to be used in its natural state without any conversion losses. Non-toxic and odourless, natural gas is made up primarily of methane (CH4), meaning that it contains a lower proportion of carbon than any other fossil fuel. Consequently, CO2 emissions are cut by over 20 per cent compared to petrol.

Network of natural-gas filling stations expanding all the time

Expansion of the filling station network in Germany is continuing apace. There are currently more than 730 filling stations in Germany with natural-gas pumps. Refuelling with natural gas is extremely straightforward and takes no longer than with traditional fuel types. Furthermore, no losses through evaporation take place and no unpleasant odours are produced during refuelling.

Natural gas is lighter than air. As a result, natural-gas-powered vehicles may be driven into multi-storey car parks and tunnels without any restrictions. Warning signs such as "Entry prohibited for compressed-gas-driven motor vehicles" do not apply to vehicles run on natural gas.

Impeccable levels of comfort and safety, extensive standard specification

The driver and fellow occupants of a Mercedes-Benz E 200 NGT need not compromise on comfort or safety in any way. The standard specification of the NGT saloons is, apart from just a few exceptions, identical to that of the E 200 KOMPRESSOR model.

Standard specification of the E 200 NGT, CLASSIC line (extract):


Adaptive airbags and belt force limiters for driver and front passenger
Adaptive, flashing brake lights
ADAPTIVE BRAKE
Aero windscreen wipers
Service interval display (ASSYST PLUS)
Anti-lock braking system (ABS)
Armrest with stowage compartment
Heated and electrically adjustable exterior mirrors
Outside temperature display
3 inertia-reel seat belts in the rear
Audio 20 CD car radio unit with telephone keypad
Front passenger detection
Wide-base tyres, size 225/55 R 16
Brake Assist
Rev counter
Fine wood appointments
ESP®
Headlamp Assist
Power windows, front and rear
Remote boot lid release
Three head restraints in the rear
Belt tensioners and belt force limiters for the front seats and the outer seats in the rear
THERMATIC automatic climate control with combined dust/pollen filter
Light-alloy wheels, size 7.5 J x 16
Steering wheel adjustable for height and reach
Lumbar support
Multifunction steering wheel
Front fog lamps
NECK-PRO head restraints for driver and front passenger
PRE-SAFE®
Rain sensor with infinitely adjustable intermittent wipe
Tyre pressure loss warning system
Trip computer
ELCODE locking system, designer key with chrome inserts
Five-speed automatic transmission with Touchshift control
Turn signal repeaters in the exterior mirrors
Power steering
Front sidebags
Front seats electrically adjustable for height, rake and backrest angle
Cruise control with SPEEDTRONIC
TIREFIT with electric pump
Green-tinted windows
Windowbags
Central display in instrument cluster
Central locking with crash sensor
The E 200 NGT can also be specified in the ELEGANCE or AVANTGARDE design and equipment lines as an option. At the same time, there are virtually no omissions from the extensive list of optional extras when compared to the conventional E-Class Saloon.


Mercedes-Benz E 200 NGT

Engine

No. of cylinders/arrangement 4/in-line, 4 valves per cylinder
Displacement cc 1796
Bore x stroke mm 82.0 x 85.0
Rated output kW/hp 120/163 at 5500 rpm
Rated torque Nm 240 at 3000 rpm
Compression ratio 9.5 : 1
Mixture formation Microprocessor-controlled petrol or gas injection with hot-film airflow meter, supercharger

Power transfer

Transmission Five-speed automatic transmission
Gear ratios
Final drive
1st gear
2nd gear
3rd gear
4th gear
5th gear
Reverse gear 3.46
3.95
2.42
1.49
1.00
0.83
3.15

Chassis

Front axle Four-link suspension, anti-dive device, coil springs, gas-filled shock absorbers, anti-roll bar
Rear axle Multi-link independent suspension, anti-squat and anti‑dive device, coil springs, gas-filled shock absorbers, anti-roll bar
Braking system Adaptive Brake system, internally ventilated disc brakes at front, solid disc brakes at rear, drum-type parking brake at rear, ABS, Brake Assist, ESP®
Steering Rack-and-pinion power steering, steering shock absorbers
Wheels 7.5 J x 16
Tyres 225/55 R 16

Dimensions and weights

Wheelbase mm 2854
Track width front/rear mm 1559/1552
Overall length mm 4856

Overall width mm 1822
Overall height mm 1484
Turning circle m 11.4
Boot capacity, max.* l 400
Kerb weight, as per EC kg 1765
Payload kg 510
Max. gross vehicle weight kg 2275
Fuel tank capacity, petrol/gas l/kg 65/18

Performance and fuel consumption


Premium unleaded Natural gas
Acceleration,
0-100 km/h
s 10.7 10.8
Top speed km/h 227 227
Fuel consumption** 9.0 l/100 km 6.1 kg/100 km ***
*in accordance with VDA measuring method; **NEDC combined; ***natural gas group "H"


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