Mercedes-Benz S 400 BlueHYBRID – petrol/electric luxury

Mercedes-Benz S 400 BlueHYBRID – petrol/electric luxury

Mercedes-Benz S400 BlueHYBRID fq

Mercedes-Benz is launching its first passenger car model equipped with a hybrid drive system in mid-2009 – the S 400 BlueHYBRID. With a modified 3.5-litre, 220kW (299hp) V6 petrol engine and a compact hybrid module producing an extra 15kW (20hp) it’ll be one of the world’s most economical luxury saloons with a spark-ignition engine. The NEDC combined fuel consumption is 7.9 litres per 100 kilometres, which beats the V8-powered Lexus LS600hL’s 9.3l/100km. It also makes for the world’s lowest CO2 emissions in this vehicle and performance class – just 190 grams per kilometre. These exemplary figures go hand in hand with assured performance. The new S 400 BlueHYBRID is the first series-production model to be equipped with a particularly efficient lithium-ion battery specially developed for automotive use.

It is based on the S 350, and features an extensively modified drive train. This encompasses a further development of the 3.5-litre V6 petrol engine, an additional magneto-electric motor, the 7G-TRONIC seven-speed automatic transmission specially configured for the hybrid module, the necessary operating and control electronics, the transformer and a high-voltage lithium-ion battery.

The compact hybrid module is a disc-shaped electric motor that also acts as a starter and generator. The system offers a double benefit, as it both helps to save fuel and increases driving enjoyment. This is partly due to the booster effect of the electric motor, as it powerfully backs up the petrol engine with a maximum additional torque of 160 newton metres during the high-consumption acceleration phase, giving a total of 385Nm of available torque.

The hybrid module also has a comfortable start/stop function, which switches the engine off when the vehicle is at a standstill – for example at traffic lights. When it’s time to move off again, the electric motor almost imperceptibly restarts the main power unit. This likewise makes a contribution to fuel economy and environmental protection: because the engine restarts first time, and practically instantly, emissions are also minimised during the starting phase.

When the vehicle is braked the electric motor acts as a generator, and is able to recover braking energy by a process known as recuperation. The electric motor supplements the braking effect of the petrol engine and the wheel brakes to deliver a smoothly progressive braking action. The recuperated energy is stored in a compact yet highly efficient lithium-ion battery in the engine compartment, and made available when required. This complex system is managed by a high-performance control unit, which is likewise located in the engine compartment.

Major advantages of the lithium ion battery over conventional nickel/metal hydride batteries include a higher energy density and better electrical efficiency, together with more compact dimensions and a lower weight.

The S 400 BlueHYBRID accelerates from zero to 100 km/h in 7.2 seconds, and reaches an electronically governed top speed of 250 km/h. The S 400 BlueHYBRID betters the NEDC fuel consumption of the conventionally powered S 350 by up to 2.2 litres per 100 kilometres. CO2 emissions are reduced by 21 percent.

Mercedes-Benz S400 BlueHYBRID fq

Mercedes-Benz is launching its first passenger car model equipped with a hybrid drive system in mid-2009 – the S 400 BlueHYBRID. With a modified 3.5-litre, 220kW (299hp) V6 petrol engine and a compact hybrid module producing an extra 15kW (20hp) it’ll be one of the world’s most economical luxury saloons with a spark-ignition engine. The NEDC combined fuel consumption is 7.9 litres per 100 kilometres, which beats the V8-powered Lexus LS600hL’s 9.3l/100km. It also makes for the world’s lowest CO2 emissions in this vehicle and performance class – just 190 grams per kilometre. These exemplary figures go hand in hand with assured performance. The new S 400 BlueHYBRID is the first series-production model to be equipped with a particularly efficient lithium-ion battery specially developed for automotive use.

It is based on the S 350, and features an extensively modified drive train. This encompasses a further development of the 3.5-litre V6 petrol engine, an additional magneto-electric motor, the 7G-TRONIC seven-speed automatic transmission specially configured for the hybrid module, the necessary operating and control electronics, the transformer and a high-voltage lithium-ion battery.

The compact hybrid module is a disc-shaped electric motor that also acts as a starter and generator. The system offers a double benefit, as it both helps to save fuel and increases driving enjoyment. This is partly due to the booster effect of the electric motor, as it powerfully backs up the petrol engine with a maximum additional torque of 160 newton metres during the high-consumption acceleration phase, giving a total of 385Nm of available torque.

The hybrid module also has a comfortable start/stop function, which switches the engine off when the vehicle is at a standstill – for example at traffic lights. When it’s time to move off again, the electric motor almost imperceptibly restarts the main power unit. This likewise makes a contribution to fuel economy and environmental protection: because the engine restarts first time, and practically instantly, emissions are also minimised during the starting phase.

When the vehicle is braked the electric motor acts as a generator, and is able to recover braking energy by a process known as recuperation. The electric motor supplements the braking effect of the petrol engine and the wheel brakes to deliver a smoothly progressive braking action. The recuperated energy is stored in a compact yet highly efficient lithium-ion battery in the engine compartment, and made available when required. This complex system is managed by a high-performance control unit, which is likewise located in the engine compartment.

Major advantages of the lithium ion battery over conventional nickel/metal hydride batteries include a higher energy density and better electrical efficiency, together with more compact dimensions and a lower weight.

The S 400 BlueHYBRID accelerates from zero to 100 km/h in 7.2 seconds, and reaches an electronically governed top speed of 250 km/h. The S 400 BlueHYBRID betters the NEDC fuel consumption of the conventionally powered S 350 by up to 2.2 litres per 100 kilometres. CO2 emissions are reduced by 21 percent.

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