2018 Mercedes-Benz S560e Plug-in Hybrid is a more powerful and more efficient successor to S500e

Article by Christian A., on September 13, 2017

While Mercedes-Benz, through its AMG unit, is toying with its Project One hypercar, it has unveiled at the 2017 Frankfurt Motor Show the newest and cleaner addition to its S-Class model range – the 2018 Mercedes-Benz S560e next-generation plug-in hybrid.

Meant to replace the S500e plug-in hybrid of the pre-Facelift S-Class, the new Mercedes S560e boasts of having more power and being able to travel longer distances. These capabilities are centered on the S560e’s more dynamic hybrid drive system that employs a more powerful V6 engine and electric motor as well as a higher capacity lithium-ion battery.

The hybrid system that propels the new Mercedes S560e makes use of a 3.0-liter V6 engine that delivers 270 kW (367 hp) of max output and 500 Nm (369 lb.-ft) of peak torque. For other vehicles, this amount of power is already enough, but Mercedes has adjudged that this conventional mill wasn’t enough to make the S560e not just powerful, but also efficient. As a plug-in hybrid, the new S560e also makes use of an electric motor – developed in collaboration with Bosch -- that generates up to 90 kW of output and 440 Nm of instant torque.

Power is sent to the wheels through a third-generation hybrid transmission derived from the 9G-TRONIC PLUS automatic transmission. The compact hybrid drive unit accommodates the torque converter, clutch and electric motor. The electric motor in the new Mercedes S560e is especially designed for 9G-TRONIC plug-in hybrid transmission.

Completing the hybrid setup of the new Mercedes-Bensz S560e is its new lithium-ion battery that employs lithium-nickel-manganese-cobalt (Li-NMC) instead of lithium-iron-phosphate (LiFePo). Although the battery of the S560e is as large as the one on the S500e, the new cell chemistry allows it to offer an increased rated capacity of 13.5 kWh. Cell capacity has been increased from 22 Ah to 37 Ah.

As a result, the new S560e is empowered to accelerate from standstill to 100 km/h in just 5.0 seconds and achieve a top speed of 250 km/h (155 mph). It consumes just 2.1 liters of fuel per 100 km (combined) and emits only 49 grams of carbon dioxide per kilometer (combined). It also consumes 15.5 kWh of power per 100 km (weighted). If the driver wants to enjoy a zero-emission purely electrically driven trip, he or she could do so up to 50 km of distance. When the electric power runs out, the battery can be recharged (fast charging) through an on-board 7.2-kW charger, in conjunction with the Mercedes-Benz Wallbox.

In addition, since the power electronics is now accommodated in the engine compartment, the new S560e offers a boot capacity of 410 liters, up from 395 liters in the S500e.

As a member of the S-Class range, the new Mercedes S560e offers a wide array of standard equipment. These include the pre-entry climate control that could pre-set the cabin temperature of the S560e to the desired level, even before the driver enters the vehicle.

Press Release

EQ Power: new plug-in hybrid Mercedes-Benz S 560 e: More power, more range

The latest addition to the S‑Class family is a new-generation plug-in hybrid. The S 560 e (combined fuel consumption: 2.1 l/100 km, combined CO2 emissions: 49 g/km, weighted power consumption: 15.5 kWh/100 km) has an all-electric range of around 50 kilometres. In conjunction with the Mercedes-Benz Wallbox, the on-board 7.2‑kW charger allows fast charging of the battery.

Plug-in hybrids represent a key technology on the road to a locally emission-free future for the motor car. This is because they offer customers the best of both worlds; in the city they can drive on battery power alone, while on long journeys they benefit from the combustion engine's range. Hybridisation also makes the internal combustion engine more efficient, and ensures more dynamic performance.

The hybrid drive system in the S 560 e combines the 270 kW (367 hp) of the V6 spark-ignition engine with an electric output of 90 kW.

The third-generation hybrid transmission evolved on the basis of the 9G‑TRONIC PLUS automatic transmission. The torque converter, clutch and electric motor are housed in the innovative hybrid drive unit. The compact design was achieved by integrating and connecting the separating clutch, torsional vibration damper and torque converter lock-up clutch within the rotor of the electric motor. The torque converter with its powerful and highly efficient hydraulic circuit offers the customary smoothness when pulling away in hybrid mode.

Developed together with Bosch as part of the EM‑motive joint venture, the electric motor was specially designed for the 9G‑T RONIC plug-in hybrid transmission. The new, significantly enhanced power electronics have allowed further increases in output and torque. The electric output of 90 kW and 440 Nm contributes to the effortlessly superior driving sensation in the S‑Class.

The S 560 e has an all-electric range of around 50 kilometres. A crucial factor here is that, although the battery size remains unchanged, the new lithium-ion battery has an increased rated capacity of 13.5 kWh. Evolving the cell chemistry from lithium-iron-phosphate (LiFePo) to lithium-nickel-manganese-cobalt (Li-NMC) allowed the cell capacity to be increased from 22 to 37 Ah. The highly efficient battery system in the S‑Class comes, for the first time, from the wholly owned Daimler subsidiary Deutsche ACCUMOTIVE.

The power electronics are now housed in the engine compartment. Despite an increase of around 50 percent in its energy content, the dimensions of the new battery are smaller than those of its predecessor. As a result, the boot capacity has increased from 395 to 410 litres.

Technical data at a glance:

S 560 e
Number of cylinders/arrangement
6/V
Displacement (cc)
2996
Rated output of spark-ignition engine (kW/hp)
270/367
Rated torque of spark-ignition engine (Nm)
500
Rated output of electric motor (kW)
90
Rated torque of electric motor (Nm)
440
Fuel consumption (l/100 km)
2.1
CO2 emissions (g/km)
49
Power consumption, weighted (kWh/100 km)
15.5
Electric range (km)
50
Acceleration 0-100 km/h (s)
5.0
Top speed (km/h)
250
Intelligent operating strategy with ECO Assist

The S 560 e provides comprehensive support to promote anticipatory and economical driving: The driver is prompted when it is appropriate to release the accelerator, e.g. because the S‑Class is approaching a speed limit, and assisted by innovative functions such as gliding and recuperation. To this end, navigation data, traffic sign recognition and information from the intelligent safety assistants (radar and stereo camera) are networked and processed.

ECO Assist takes the following traffic situations and information into account in its driving recommendations and efficiency strategy:

ECO Assist continuously generates coasting simulations in the background: Depending on the charge level of the battery and the traffic situation, it computes whether the vehicle should ideally be allowed to coast freely ("sail") with the lowest possible driving resistance when releasing the accelerator, or whether it should be decelerated so that the battery can be efficiently charged (recuperation).

The haptic accelerator pedal helps the driver to achieve an economical and comfortable driving style. A variable point of resistance in the pedal, for example, indicates to the driver that maximum electric output is being delivered. If the driver continues to depress the pedal beyond this point, the combustion engine kicks in. A noticeable double pulse in the haptic accelerator pedal recommends the driver to take their foot off the accelerator. If the driver follows this recommendation, the combustion engine is switched off and decoupled from the drivetrain.

Within the limits of the system, ECO Assist regulates the impetus according to the situation as soon as the driver's foot leaves the accelerator. The driver is also given a visual prompt to do this by the appearance of a "release accelerator" symbol in the central display (or if installed, in the head-up display). At the same time a graphic gives the driver the reason for the recommendation (e.g. "Junction ahead" or "Gradient ahead").

To increase the driver's motivation to follow the recommendations of ECO Assist, the on-board computer records how many kilometres/for how much time during a journey the car has been driven with the engine switched off, and shows this in the central display. The reward not only takes the form of reduced fuel consumption, but also of an increased electric range.

Pre-entry climate control: more comfort as standard

The standard equipment for the S 560 e is extensive and includes special features such as extended pre-entry climate control. This is target value controlled. In other words, the S‑Class is air-conditioned to the preset temperature ready for the start of the trip, assuming the driver has entered the departure time, for example via Mercedes me. This is possible due to the electrically driven refrigerant compressor and electric heating elements for the heated air. Furthermore, preheating encompasses not just the interior air but also the heated seats, steering wheel and armrests in the doors and centre console, while cooling also activates the seat ventilation if this particular optional extra is fitted.

One of the broadest portfolios of plug-in hybrids

Because the strengths of plug-in hybrids come to the fore in larger vehicles and on mixed route profiles, Mercedes-Benz is opting for this powertrain concept from the C‑Class on up. The strategic hybrid initiative is decisively facilitated by Mercedes-Benz's intelligent modular hybrid concept: It is scalable to allow it to be transferred to a large number of model series and body styles as well as left- and right-hand-drive variants. To underline the important role of hybrids in the process of electrifying the car, the Mercedes-Benz plug-in models will, in future, feature the technology badge EQ Power.

At present Mercedes-Benz has one of the broadest ranges of plug-in hybrids in the premium segment: following on from the C 350 e (saloon, estate and long version for the Chinese market), the GLE 500 e 4MATIC, the GLC 350 e 4MATIC, the GLC Coupé 350 e 4MATIC and the E 350 e, the new S 560 e – the successor of the S 500 e – is already the eighth plug-in model that Mercedes-Benz is bringing to the market.

Source: Mercedes-Benz

If you liked the article, share on:

Comments

Recommended

Every time there is an auto show, people tend to compare one car to another - in terms of technology, performance, appeal, and many other factors. And oftentimes, new models...
by - December 18, 2017
Soon, production-based electric cars could now race against each other on the circuits against the background of the FIA Formula E Championship, which is considered as the pinnacle of electric...
by - September 21, 2017
Honda is showcasing the retro-inspired EV concept in Germany’s 2017 Frankfurt Motor Show which will last until September 24. The retro styled city car, which is also the Japanese car...
by - September 21, 2017
During the 2017 Frankfurt Motor Show, Land Rover presented something that no other automaker has before - an off-road stroller for parents to use when transporting their toddlers. In other...
by - September 19, 2017
Around two weeks after Porsche unveiled the third generation of the Porsche Cayenne in Stuttgart, Germany, the sports car maker has taken the wraps off the turbo version of the...
by - September 18, 2017