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Prestige Electric Car PrestigeElectricCar Following its premiere in the S-Class, Mercedes-Benz is now offering its most advanced hybrid […]
Mercedes-Benz C-Class Plug-In Hybrid
15 January 2015

Mercedes-Benz C-Class Plug-In Hybrid

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    Following its premiere in the S-Class, Mercedes-Benz is now offering its most advanced hybrid technology yet in the C-Class and also in an Estate model. With a range of 19 miles in purely electric mode, local emission-free driving is now a reality. Its four-cylinder petrol engine, in conjunction with a powerful electric motor, gives it a total system output of 279 hp and torque of 600 Nm. The new C 350 PLUG-IN HYBRID thus delivers the performance of a sports car and yet offers certified consumption figures of 134.5 mpg both as a Saloon and as an Estate. This corresponds to CO2 emissions of 48 grams (49 grams for the Estate) per kilometre.



    Prof Dr Thomas Weber, Member of the Board of Management of Daimler AG and responsible for Group Research and Mercedes-Benz Cars Development: "We will be launching ten new PLUG-IN HYBRID models up to 2017."

    Following the C 300 BlueTEC HYBRID, the C 350 PLUG-IN HYBRID is the second hybrid model in the new C-Class and the second Mercedes-Benz model to feature PLUG-IN HYBRID technology. Thanks to the combination of combustion engine and electric drive, hybrid drive systems deliver impressive low consumption, but with high performance. The electric motor is able to replace or support the combustion engine in situations where the combustion engine does not perform quite so well, and makes practical use of energy generated while braking by converting it into electric energy and storing it.

    The C 350 PLUG-IN HYBRID uses the currently most advanced form of hybrid technology. Its electrical energy storage unit is a high-voltage lithium-ion battery with a total capacity of 6.2 kWh, which can be charged from an external power source and so makes an effective contribution to the low consumption and emission figures. The battery is water-cooled, weighs around 100 kilograms and is mounted in a sheet steel housing underneath the rear axle in order to maximise crash safety, driving dynamics and boot space.

    Thanks to an intelligent on-board charging system, the battery can be recharged in around 1 hour 45 minutes at a wallbox or at one of the growing number of public charging points (230 V, 16 A, 3.7 kW single-phase), which in some cases offer privileged parking. Alternatively, charging via a standard domestic socket is of course also possible. Depending on the connection, a charge time of around two hours is achievable (with 230 V and 13 A, 3.0 kW).

    Despite the space taken up by the battery, the C 350 PLUG-IN HYBRID still has a boot capacity of 335 litres in its Saloon format and of 350 in the Estate model, or in the latter case of 1370 litres with the rear-seat backrests folded down and, as ever, a level load compartment floor.

    The hybrid module of the standard 7-speed automatic transmission 7G-TRONIC PLUS incorporates both the electric motor and an additional clutch between the combustion engine and the electric motor. When driving in all-electric mode, this decouples the combustion engine from the drive train. It also, however, offers the possibility of moving off using the combustion engine but with the performance of a wet start-up clutch. The clutch here is a substitute for the torque converter.

    The greatest potential for lowering the energy consumption of hybrid drive systems lies in maximising energy recovery during coasting and braking. When the brake pedal is depressed, the electric motor therefore initially takes on the task of decelerating, acting here as an alternator. If firmer braking is required, the disk brakes will then intervene mechanically to provide additional grip. This overlap between conventional mechanical braking and the electric braking performance of the electric motor in alternator mode increases effectiveness but remains imperceptible.
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