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giugno 05, 2017 - Dodge

2018 Dodge Challenger SRT Demon Powertrain Fact Sheet

Comunicato Stampa disponibile solo in lingua originale. 

Details about the supercharged 6.2-liter HEMI® V-8 and powertrain in the 2018 #dodge #challengersrtdemon:

Displacement: Supercharged 6.2-liter V-8

Construction: Deep-skirt cast iron block; aluminum alloy heads with hemispherical combustion chamber

Output:

  • 840 bhp (626 kW) @ 6,300 rpm; 770 lb.-ft (1,044 N•m) @ 4,500 rpm with Direct Connection Controller and unleaded 100 octane minimum fuel
  • 808 bhp (603 kW) @ 6,300 rpm; 717 lb.-ft (972 N•m) @ 4,500 rpm with Premium 91 octane fuel


Production site: Saltillo Engine Plant, Ramos Arizpe, Mexico

  • 62 percent new content compared with Hellcat V-8: engine block; crankshaft; pistons; connecting rods; supercharger
  • Cylinder heads machined on dedicated Demon/Hellcat CNC machines
  • Engine block is deck plate honed to minimize bore distortion
  • Every Demon and Hellcat engine is dyno tested for 42 minutes under load up to 5,200 rpm before being shipped to assembly plant in Brampton, Ontario

 
More air: Largest functional hood scoop opening (45.2 square inches) and triple-inlet air box (903.1 cubic inches). High flow, low restriction inlet system designed to deliver cool air into the supercharger.

Air-flow rate: 1,150 cubic feet per minute

SRT Power Chiller™: Redirects air conditioning refrigerant from cabin to chiller unit; reduces charge air temperature by 18 degrees Fahrenheit
 
Supercharger:

  • Twin screw, 2.7 liters per revolution
  • Rotors 1.1 inches longer compared with Hellcat
  • Maximum boost pressure 14.5 psi compared with 11.6 psi for Hellcat
  • Dual water/air heat exchangers integrated into supercharger housing
  • Electric pump flows up to 11.9 gallons per minute

 
Engine internals:

  • Forged alloy steel crankshaft with 90.9-millimeter stroke and revised balancing
  • Induction-hardened crank bearing surfaces; individual journal optimized main bearing clearances
  • Forged high-strength alloy pistons; 30-micron increased piston to bore clearance
  • Powder forged connecting rods; upgraded shank and big end; revised ultra-high tensile fasteners
  • Flow doubled on piston cooling oil jets
  • Revised design valve springs
  • 33 percent increase in oiling for valve springs and rocker tips – lubrication and cooling
  • Single-groove collets on valve stems for improved stability
  • Fuel injector pressure increased 27 percent
  • Oil pan and windage tray optimized for high acceleration – tested up to 1.8 g

 
Transmission: TorqueFlite 8HP90 eight-speed automatic

  • Upgraded automatic transmission torque converter increases torque multiplication 18 percent
  • Torque converter stall speed increased 11 percent
  • In Drag Mode, transmission minimizes torque cut during gear changes – 400 millisecond shifts

 
Drivetrain:

  • Limited-slip differential
  • 230-millimeter ring gear in high strength alloy, heat-treated aluminum differential housing
  • 3.09 final drive ratio for maximum acceleration
  • 20-percent thicker prop shaft made of high strength, low alloy steel tube; high strength steel stub shafts
  • Upgraded halfshafts with 8-ball Cross-Glide inner and outer joints; larger diameter barshafts with 41-spline count; high alloy steel inner and outer stub shafts
  • Nitto drag radial tires achieve up to 40 percent more launch force

 
Fun facts:

  • During a quarter-mile run, the Demon V-8 ingests 173 cubic feet of air. That’s equivalent to the lung capacity of 816 humans.
  • 800 feet into a quarter-mile run, the Demon V-8 would empty all the air in the cabin of the #dodge #challengersrtdemon – 105 cubic feet
  • Demon V-8 cooling system rejects 258 kW of heat at rated power – that would boil 1 quart of water at room temperature in 1.2 seconds. The heat rejected is equal to 250 electric toasters.
  • At rated power, high-octane fuel flows at 1.36 gallons per minute. Typical shower head flows at 2 gallons per minute
  • On each power stroke, piston and connecting rod is loaded with 11 tons of force – equivalent of 5 2018 #dodge Challenger SRT Demons. This happens more than 50 times a second @ 6,300 rpm.
  • Torque Reserve and TransBrake combined generate 317 lb.-ft. of incremental torque, for total launch torque of 534 lb.-ft.
  • The driveline sees 11,164 lb.-ft. of ring gear torque at launch. Results in a 1.8 g launch.
  • More than 1 ton (2,500 pounds) transferred from front to rear wheels at launch


About #dodge and SRT Brands
The #dodge brand is America’s mainstream performance brand. With the purification of the brand and consolidation with SRT, #dodge is focusing on its performance roots with every single model it offers. The #dodge and SRT brands offer a complete lineup of performance vehicles that stand out within their own segments. #dodge is the mainstream performance brand and SRT is positioned as the ultimate performance halo of the #dodge brand, together creating a complete and balanced performance brand with one vision and one voice.

From muscle cars to minivans, crossovers and full-size SUVs, the #dodge brand’s full lineup of 2017 models deliver best-in-class horsepower, class-exclusive technology, unmatched capability and a slew of cool features, such as LED headlamps, #dodge signature racetrack tail lamps, active exhaust, cold-air induction, 8.4-inch touchscreen Uconnect infotainment centers and 7-inch customizable gauge clusters, to name a few. For the 2017 model year, the #dodge brand lineup features the 25th anniversary Viper, Durango, Grand Caravan, Journey, Charger and Challenger, including the new Challenger GT, Charger Daytona and Challenger T/A, as well as the 707-horsepower Challenger SRT Hellcat and the Charger SRT Hellcat, the quickest, fastest and most powerful sedan in the world.

New for 2018, #dodge introduces the new 840-horsepower #dodge #challengersrtdemon — the fastest quarter-mile car in the world and most powerful muscle car ever, as well as the 2018 #dodge Durango SRT – America’s fastest, most powerful and most capable three-row SUV. 

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