Mercedes-Benz Relentlessly Checks EQC In Sweden

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The EQC appears nice in winter surroundings

Mercedes-Benz not too long ago launched a set of lovely photographs with the EQC throughout its closing winter check in Arjeplog, Sweden, only a few months earlier than the manufacturing launch.

The automotive was examined on ice and snow in temperatures as little as minus 35°C. The temporary description lists tons of issues that have to be double checked earlier than Mercedes-Benz will hand over the primary items to prospects:

  • cold-starting traits
  • thermal consolation of the inside
  • the thermal administration of the battery
  • pre-entry climatization
  • vary in buyer operation
  • recharging in chilly situations
  • dealing with security
  • traction and recuperation on ice and snow, interplay between the electrical powertrain and ESP intervention
  • adverse results of ice and snow

To this point, round 200 prototypes and pre-series fashions lined a number of million kilometres on 4 continents.

2020 Mercedes-Benz EQC 400 4MATIC preliminary specs

  • twin motor (asynchronous), all-wheel drive
  • system output of 300 kW (402 hp) and 564 lb-ft (765 Nm)
  • Zero-60 mph in four.9 seconds (Zero-100 km/h in 5.1 seconds)
  • high pace of 112 mph (180 km/h)
  • 80 kWh battery (384 cells – two modules with 48 cells and 4 modules with 72 cells, whole weight of 650 kg)
  • greater than 200 miles (320 km) of all-electric vary (prelim est.) or over 280 miles (450 km) underneath NEDC
  • DC quick charging (CCS Combo) in 40 minutes (110kW, 10%-80%)
  • AC on-board charger – 7.four kW
  • towing functionality – 1,800 kg (three,968 lbs)
Mercedes-Benz EQC
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Press launch

EQC on Ice: Electrical on ice: winter trials of the EQC

Endurance exams across the globe

Shortly earlier than its market launch, the EQC (mixed energy consumption: 22.2 kWh/100 km; mixed CO2 emissions: Zero g/km, provisional figures)[1] is present process closing exams in Sweden’s snowy landscapes. Throughout these additional winter trials in Arjeplog, Sweden, the engineers pay explicit consideration to the thermal administration of the battery and inside, recharging in chilly situations and dealing with security, traction and recuperation on ice and snow.

After digital exams and benchtests, the 200 or so prototypes and pre-series fashions of the EQC cowl a number of million kilometres on 4 continents. The check program consists of over 500 particular person exams in Europe, North America, Asia and Africa. Through the course of three winters and three summers, the EQC is subjected to temperatures from minus 35° as much as over plus 50° Celsius. These exams are carried out for closing verification earlier than buyer deliveries of the EQC start.

Winter trials

Testing is carried out in Arjeplog in Lapland, on the roads and on specifically ready check tracks. The truth is testing begins sooner than this: the elements are optimized in iteration cycles in Sindelfingen, and the newest variants are put in within the autos.

The winter trials observe a strict timetable: every day begins with an early morning dialogue throughout which the day’s actions are outlined. Within the night there’s a closing dialogue with suggestions from the check workforce, the outcomes for the day and planning of actions for the following days and weeks.

In distinction to the earlier winter trials of the EQC, solely the ultimate particulars are optimized and verified this time. This consists of fine-tuning and testing of facets that current a specific problem in electrical autos.

  • Chilly-starting traits and thermal consolation: These have to be coordinated in addition to attainable, and are subsequently totally examined. The accessible energy when cold-starting with a chilly battery have to be adequate for automobile operation. The builders look at the warm-up traits of the electrical automotive, as in distinction to standard combustion engines, no waste warmth is obtainable to be used. Additionally examined is the operation of the pre-entry climatization operate, which ensures very quick and environment friendly warming of the automobile earlier than a journey begins. The working technique for thermal consolation is totally examined at low temperatures, to realize the optimum effectivity and luxury.
  • Pre-entry climatization – on this case warming the automobile inside, steering wheel, rear window and, relying on alternative, the driving force’s seat or all of the seats earlier than beginning off – should work completely. Quite a few check drives are carried out in order to evaluate the consequences on working vary in addition to attainable. To make the vary so long as attainable, it’s advisable to cost the automobile at a charging station in order that the power wanted for pre-entry climatization comes from the ability grid, and never from the high-voltage battery.
  • Vary in buyer operation: Naturally this also needs to be pretty much as good as attainable in chilly situations. The engineers subsequently look at how exact the vary calculations are. In addition they analyze how a lot vary is sacrificed when the inside is heated throughout a journey. On this connection extra exams are carried out to indicate how quickly the inside cools down throughout quick stops, e.g. purchasing journeys, and the way a lot power is then wanted to compensate the warmth loss. It’s all the time extra energy-efficient to decrease the inside temperature and function the seat heating as required.
  • Unfavourable results of ice and snow:
    • Features examined by the check workforce embody e.g. the filler neck compartment seals throughout operation. Totally different design patterns are assessed and chosen.
    • The engineers additionally examen how e.g. the motor compartment and axles react to penetrating ice or snow. The assemblies must be adequately protected by the aerodynamically optimized underbody panels and the measures taken to exclude snow from the uncovered areas of the axles.
    • The working effectivity of the sensors in icy and snowy situations can be examined. Checks are carried out to determine whether or not and the way the wheel sensors work when they’re froze. On this connection the event workforce additionally examines the performance of the built-in heating system, and whether or not Energetic Distance Help DISTRONIC intervenes as regular. The goal in all circumstances is to make sure reliability in unfavorable situations.
  • Interplay between the electrical powertrain and ESP® intervention: In contrast to conventionally powered autos, the EQC has the benefit that along with the acquainted ESP, the electrical powertrains (eATS) on the entrance and rear axle can contribute to dealing with stability. Their interplay is subsequently totally examined and optimized for optimum dealing with stability.

Thermal administration & charging within the chilly

  • The check middle in Sweden is supplied with all sorts of charging connectors, from home sockets to AC wallboxes and DC chargers. Drivers needing to cowl lengthy distances within the winter ought to cost the EQC at a wallbox and use power from the ability grid for pre-entry climatization.
  • Necessary to know: At very low temperatures the high-voltage battery absorbs much less energy, because the chemical processes are slower than normal. Through the charging course of, a battery heating system referred to as a PTC (Optimistic Temperature Coefficient Thermistor) ensures that the battery stays in the very best efficiency and effectivity vary. To this finish the coolant of the high-voltage battery is warmed as if by an immersion heater.
  • Nevertheless, the efficiency of such PTCs relies on the inlet temperature of the coolant. The benefit is that the element itself prevents overheating, making extra safety techniques pointless. It is because the ceramic PTC elements have a really low electrical resistance at low temperatures, permitting a excessive circulation of present for top heating output.
  • Ideally the automobile inside also needs to be prewarmed in the course of the charging course of. Which means EQC drivers haven’t any have to scrape iced-up home windows or get into an ice-cold automotive. It additionally extends working vary, because the power required from the high-voltage battery may be vastly diminished on this method. Moreover, the EQC additionally makes use of the waste warmth from the battery as a supply of power. Pre-entry climatization may be managed by way of the multimedia system MBUX – Mercedes-Benz Person Expertise or the Mercedes me App.
  • The pre-entry climatization system makes use of goal values. When the driving force enters his/her departure time, the EQC is climatized to the preset temperature earlier than the journey begins. The driving force can do that individually for every journey or stretch, or by setting a weekly profile.

Traction, dynamic dealing with and recuperation

  • To make sure most traction and dealing with stability even on snow and ice, the working technique detects spinning wheels and adapts the all-wheel torque distribution accordingly.
  • Due to the interplay between the 2 independently actuated electrical motors and the three-stage ESP, the EQC is significantly extra secure and agile than typical autos even in winter.
  • When traction is misplaced, the drive torque may be adjusted with the assistance of micro slip management inside factions of a second, and redistributed between the axles by ESP – an motion much like that of typical all-wheel drive with a middle differential lock.
  • On downhill gradients the engineers check the recuperation efficiency of the EQC in Sweden. An icy highway supplies significantly much less floor adhesion than a dry one. It’s subsequently essential to configure ESP very exactly. It should intervene in an emergency, but in addition enable the specified recuperation when driving usually.

Key info in regards to the EQC:

  • The EQC is the primary Mercedes-Benz mannequin underneath the brand new product and know-how model EQ. On the similar time the EQC is symbolic of a brand new period in mobility at Daimler.
  • Due to the newly developed drive system with a compact electrical powertrain (eATS) at every axle, the EQC has the driving traits of an all-wheel drive. The entrance electrical motor is configured for very best effectivity within the low to medium load vary, whereas the rear motor supplies dynamism.
  • The 80 kWh (NEDC) lithium-ion battery provides the power and may obtain an electrical working vary of over 450 km (acc. to NEDC, provisional determine) .
  • Owing to its muscular proportions, the EQC is categorized as a crossover SUV. The stretched roofline and the window sample with a low waistline and a coupé-like roof taper on the rear visually place it between an SUV and an SUV coupé.
  • The help system ECO Assistant provides the driving force complete assist when driving predictively: by informing him/her when the gasoline pedal may be launched, e.g. as a result of there’s a pace restrict forward, and with features comparable to gliding and particular recuperation management.

Technical information[2]

CO2 emissions Zero g/km
Energy consumption (NEDC) 22.2* kWh/100 km
Vary (NEDC) over 450* km
Drive 2 asynchronous motors, all-wheel drive
Rated energy output 300 kW (408 hp)
Max. torque 765 Nm
Prime pace 180 km/h (restricted)
Acceleration Zero-100 km/h 5.1 s
Battery Lithium-ion
Vitality content material of battery (NEDC) 80 kWh
Battery weight 650 kg
Size/width (incl. mirrors)/peak 4761/1884 (2096) /1624 mm
Observe width (fr./rear) 1625/1615 mm
Wheelbase 2873 mm
Baggage capability (relying on tools) approx. 500 l
Curb weight/perm. gross automobile weight/payload (DIN) 2425*/2930/505 kg
perm. trailer load on 12% gradient 1800 kg

*provisional figures

[1] Figures for energy consumption and CO2 emissions are provisional, and have been measured by the Technical Service. The figures for working vary are likewise provisional. No EC sort approval and certificates of conformity with official figures is obtainable as but. Variations between the acknowledged figures and the official figures are attainable.

[2] Figures for energy consumption and CO2 emissions are provisional, and have been measured by the Technical Service. The figures for working vary are likewise provisional. No EC sort approval and certificates of conformity with official figures is obtainable as but. Variations between the acknowledged figures and the official figures are attainable.

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