Koenigsegg Jesko

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Koenigsegg Jesko
Koenigsegg Jesko Genf 2019 1Y7A5887.jpg
Pre-production model at Geneva International Motor Show 2019
Overview
ManufacturerKoenigsegg Automotive AB
Production2020 –
AssemblyÄngelholm, Sweden
DesignerChristian von Koenigsegg
Joachim Nordwall
Body and chassis
ClassSports car (S)
Body style2-door targa top
LayoutRear mid-engine, rear-wheel-drive
DoorsDihedral
Powertrain
Engine5 L (5,032 cc; 307 cu in) twin-turbocharged V8
Power output1,280 PS (941 kW; 1,262 hp) (normal gasoline)
1,600 PS (1,177 kW; 1,578 hp) (E85)
Transmission9-speed multi-clutch
Dimensions
Wheelbase2,700 mm (106 in)[1]
Length4,610 mm (181 in)[1]
Width2,030 mm (80 in)[1]
Height1,210 mm (48 in)[1]
Curb weight1,420 kg (3,131 lb)[2]
Chronology
PredecessorKoenigsegg Agera

The Koenigsegg Jesko is a limited production mid-engine sports car produced by Swedish automobile manufacturer Koenigsegg. Introduced at the 2019 Geneva Motor Show, the car succeeds the Agera. The name Jesko is a tribute to the founder's father, Jesko von Koenigsegg.[3][4]

The automobile is named after Jesko von Koenigsegg, the father of Christian von Koenigsegg

The Jesko is primarily built as a high-performance track car, with focus on high aerodynamic downforce and more precise handling. Koenigsegg's other current production model, the Regera, is designed as a grand touring-oriented offering.

Specifications[edit]

Engine[edit]

The 5.0-litre twin-turbocharged V8 engine used in the Jesko along with the exhaust system

The engine is a development of the 5.0-litre twin-turbocharged V8 engine used in the Agera. It has four valves per cylinder each with a bore and stroke of 92 mm × 95.25 mm (3.62 by 3.75 inches) and a compression ratio of 8.6:1. The engine has a power output of 1,280 PS (941 kW; 1,262 hp) on normal gasoline and has a power output of 1,600 PS (1,177 kW; 1,578 hp) and 1,573 N⋅m (1,160 lb⋅ft) of torque at 5,100 rpm on E85 biofuel.

Changes from the Agera's engine include the use of a new 180-degree flat-plane crankshaft that saves 5 kg (11 lb) and pushes the redline from 8,250 rpm to 8,500 rpm. The Jesko also utilizes active rubber mounts from the Regera that reduce engine vibrations in the cabin. The two large turbochargers are equipped with a 20-litre tank made from carbon fibre, coupled with an electric compressor which feeds air to the turbochargers at a pressure of 20 bar in order to reduce turbo lag. The engine has pressure sensors for each cylinder in order to achieve real time cylinder monitoring for the multipoint fuel injection system.[3][5]

Transmission[edit]

The engine is mated to an in-house developed 9-speed multi-clutch transmission called the "Light Speed Transmission (LST)"[1] by the manufacturer. The new transmission has a weight of 90 kg (198 lb) and it is at least 50% shorter in length than the previous 7-speed dual-clutch unit. It has 21 possible gear combinations (the gears are arranged in two sets of three gears) and seven clutches allowing the driver to jump to any gear without disturbing the ratio. The transmission has a shift time ranging from 20 to 30 milliseconds. It also has an overdrive mode called "Ultimate Power on Demand" that is designed to skip directly to the optimal gear depending on user input, rather than down or upshifting sequentially to that gear.[3][6]

The transmission is controlled by an onboard computer which uses engine and road speed data to engage a gear. Gears are selected by the driver either using the shift paddles mounted on the steering column or the gear selector.[2]

Gear Ratio[7]
1st gear 4.7200:1
2nd gear 3.6441:1
3rd gear 2.8744:1
4th gear 2.2500:1
5th gear 1.7371:1
6th gear 1.3702:1
7th gear 1.0783:1
8th gear 0.8325:1
9th gear 0.6566:1

Chassis and suspension[edit]

The Triplex damper system in the Jesko

Unlike its predecessors, the high-downforce variant of the Jesko has Koenigsegg's 'Triplex' dampers at the front and the rear combined with traditional Öhlins dampers. A rear horizontal rear damper prevents the rear from pressing on the ground during hard acceleration. The front dampers stabilise the car at high speeds while an active rear steering ensures further stability at all performance levels.

The carbon tub used in the Jesko is 40 mm (2 in) longer and 22 mm (1 in) wider from that of its predecessor in order for more passenger room. The tub has been redesigned and incorporates an aluminium monocoque structure for increased rigidity.[8]

Wheels, brakes and tyres[edit]

The optional carbon fibre aircore wheels showing the carbon ceramic brakes

The car comes standard with forged aluminium center locking wheels, with diameters of 20 inches at the front and 21 inches at the rear.[1] Lighter carbon fibre wheels are available as an option, weighing 5.9 kg (13 lb) at the front and 7.7 kg (17 lb) at the rear. The tyres are Michelin Pilot Sport Cup 2's with codes of 265/35 20 for the front and 345/30 21 for the rear.[9][3] Michelin Pilot Sport Cup 2 R tyres dedicated for track driving are also available as an option. The braking system uses ventilated carbon-ceramic discs.

Interior[edit]

Interior

The use of a redesigned monocoque improves leg and headroom in the interior of the Jesko when compared to previous Koenigsegg models. Though weight saving is a priority for interior features, the car is still equipped with amenities such as a climate control system, an infotainment system with a 9.0-inch screen, Apple CarPlay and USB phone charging. The car has a unique screens mounted in the steering wheel spokes and a 5.0-inch screen mounted behind the steering wheel displaying vital information to the driver. The seats will be made from hollow carbon fibre but will be electrically adjustable.[2][8]

Exterior[edit]

The user accessible compartments open along with doors

The Jesko shares Koenigsegg's 'Autoskin' capabilities from the Regera, allowing for remote operation of doors and the hood. It is also possible to hydraulically lift the front and rear axles of the car to give additional ground clearance. The doors have been redesigned so that they open further outward and have more ground clearance while open. The roof has screws in order to ensure it remains in place during high speed driving.[8]

Performance[edit]

Rear view

The Jesko is equipped with a large carbon fibre front splitter at the front and a boomerang shaped wing at the rear generating 800 kg (1,764 lb) of downforce at 249 km/h (155 mph), 1,000 kg (2,205 lb) at 275 km/h (171 mph) and 1,700 kg (3,748 lb) at its top speed which is yet to be revealed. The low drag variant of the car, which is yet to be introduced, is claimed to have a top speed in excess of 483 km/h (300 mph) in the right conditions by the manufacturer.[3]

Production[edit]

Production of the Jesko will be limited to 125 units, with 40-50 units being produced each year. Unlike its predecessors, the Jesko will be homologated worldwide.[6] It was later announced that the entire build slots of the Jesko were sold out.[10]

The Jesko will be offered in either a high-downforce or low-drag configuration, with subtle differences between the two variants. The high-downforce variant, as shown at the 2019 Geneva Motor Show, comes equipped with the dual front and rear 'Triplex' damper system and larger aerodynamic features for track use.[6] Due to this dual suspension setup, it is not possible to store the Targa roof in the front of the car, although this is possible in the low drag version as it will not have a front 'Triplex' damper system.[8]

References[edit]

  1. ^ a b c d e f "Jesko - Koenigsegg". Koenigsegg. 5 March 2019. Retrieved 5 March 2019.
  2. ^ a b c Newman, Scott (5 March 2019). "Koenigsegg Jesko revealed: 2019 Geneva Motor Show". Which Car?. Retrieved 5 March 2019.
  3. ^ a b c d e Rix, Jack (5 March 2019). "This is the Koenigsegg Jesko, and it's the world's first 300mph car". Top Gear. Retrieved 5 March 2019.
  4. ^ How to build a 300mph Koenigsegg Jesko. Top Gear. Retrieved 25 April 2019 – via YouTube.
  5. ^ Bigg, Martin (5 March 2019). "Koenigsegg Jesko Revealed As Agera RS Successor". Carbuzz. Retrieved 5 March 2019.
  6. ^ a b c Pétrány, Máté (5 March 2019). "The Koenigsegg Jesko Has 1600 HP and Promises a 300-MPH Top Speed". Road & Track. Retrieved 5 March 2019.
  7. ^ "We Dig Into the Koenigsegg Jesko's revolutionary Light-Speed Transmission". BMW BLOG. 16 March 2019. Retrieved 17 March 2019.
  8. ^ a b c d Vijayenthiran, Viknesh (6 March 2019). "Koenigsegg Jesko deep dive: 7 clutches 1,600 hp, $3M". Motor Authority. Retrieved 7 March 2019.
  9. ^ Tsui, Chris (5 March 2019). "Koenigsegg Jesko: A Swedish 'Megacar' With 1,600 HP, Seven Clutches, and 300-MPH Top Speed". The Drive. Retrieved 5 March 2019.
  10. ^ "Koenigsegg Jesko Sold Out". Koenigsegg. 19 March 2019. Retrieved 19 March 2019.

External links[edit]