Christian von Koenigsegg is a strange man. He has a vision, he has some incredible goals and he has means to reach them. His company Koenigsegg attended every single Motor Show in Geneva and every time they revealed rather special cars last of which is the Koenigsegg Regera. Yes, the name is strange and intricate, but believe us, the name isn’t half as strange the car Christian revealed in Geneva this year.
Ladies and gentlemen, please welcome the fastest accelerating car on Earth. Here, acceleration is not measured to 62 mph or to 124 mph, Koenigsegg revealed the acceleration figure to 250 mph. This is truly staggering. The Koenigsegg Regera is able to accelerate to 250 mph (400 km h for those of you who prefer the Metric system) in f***ing 20 seconds. Planes? What Planes? This thing shoots out like a rocket and who knows where the accelerating stops. Even though the numbers are almost unbelievable, the tech underneath the car is even more out of this world. This car doesn’t have a transmission. We kid you not! It does not have any kind of transmission system one would expect. Yes, we remember that Vector supercars had a transmission with only three speeds, but Koenigsegg devised a whole new system for power transfer and it is based on electric engines rather than on the conventional transmission system. However, let’s start from the beginning.
The Koenigsegg Regera is based on the Agera. However, the car received modified chassis which employs one V8 five liter engine and three electric engines, two of which are located by the rear shafts and one of which is mounted directly on the crankshaft. In order to altogether remove the transmission Koenigsegg formed a whole new power transfer system which enables the engine crankshaft to be directly connected with the rear wheels. Working together with electric motors, the engine transfers power to the wheels rpm by rpm. Basically, that means that you’ll not be able to rev the car at all. The only way to bring the car to the 8.250 rpm limiter is to go full speed with it which is, as far as we remember, higher than 250 mph. It is simply amazing that there are people who think out of the box and who use all possibilities of the electric motors. The result is a power system that produces in excess of 1.500 HP and that is, according to Koenigsegg, 300 HP more in comparison with the closest competitor.
Apart from receiving a whole new propulsion system, the Koenigsegg Regera exterior is built of carbon fiber, the car has fully adjustable rear wing, impressive cooling system and many other novelties that set it apart from any other car produced by Koenigsegg and from any other car ever produced. In one of the interviews given by Christian von Koenigsegg, he mentioned that they were searching to produce a car unlike any other. Even though the Regera doesn’t have any transmission system, acceleration and the sheer speed of the car are astonishing. Even though 62 mph can be cracked in 2,8 seconds, much more impressive is that the Koenigsegg Regera can accelerate from 93 mph to 155 mph in 3,2 seconds. Yes, you’ve read that right, we have checked five times prior to writing it down. To put things into perspective, we doubt that many aeroplanes can achieve such speeds at such short amount of time. Obviously, this is the fastest accelerating car ever produced and Koenigsegg knows he build something really special.
KOENIGSEGG DIRECT DRIVE
Traditional hybrids represent a compromise when it comes to weight, complexity, cost, packaging and efficiency.
The Regera is not what we at Koenigsegg would call a traditional hybrid as it does not have the traditional shortcomings of a hybrid. Instead, the Regera is a new breed of hybrid. It is a new breed of Koenigsegg and a new breed of car, for that matter.
Traditional ‘parallel’ hybrids are compromised and heavy as they have two independent propulsion systems moving the car. While ‘series’ hybrids are less compromised when it comes to weight, complexity and costs, they are compromised when it comes to efficiency as there is too much energy conversion taking place.
The Koenigsegg Direct Drive transmission (KDD) was invented by Christian von Koenigsegg and developed for the Regera by the Koenigsegg Advanced Engineering team.
The patent-pending KDD replaces the combustion engine’s traditional transmission – the gearbox as you know it is removed from the car. In its place, the KDD provides direct drive to the rear axle from the combustion engine without the need of multitude gears or a variable transmissions, all of which have inherently high energy losses.
During highway travel, for example, the KDD reduces drivetrain losses compared to a traditional transmission or CVT by over 50% as there is no step up or step down gear working in series with the final drive – just direct power sent from the engine to the wheels.
The Regera has three YASA developed electric motors, which supplement the energy from the combustion engine. Aside from providing extreme responsiveness, these electric motors also allow for torque vectoring, regenerative braking and energy conversion. YASA´s axial flux motors are extremely power dense, making them a key-ingredient for the KDD. There is one YASA motor for each rear wheel, providing electric direct drive, and one on the crankshaft that provides torque-fill, electrical generation and starter motor functionality.
The three electric motors constitute the most powerful electrical motor set-up in production car history, replacing the gears of a normal transmission. This provides all-important weight savings as well as adding power, torque and torque vectoring capability.
Koenigsegg has developed a clutch-slip mechanism that uses the hydraulic coupling to convert torque at medium/high speeds during fast acceleration. This allows the combustion engine to gain revs and power, thereby giving the sensation of a traditional downshift with the associated aural enjoyment, even without the traditional gearbox.
Shift paddles remain on either side of the steering wheel. The left paddle is used to enhance regenerative braking effect in recharging the battery pack. The right paddle is used to activate the hydraulic coupling’s ‘downshift’ operation.
Koenigsegg has worked extremely hard to find the best performing, and safest battery possible for the Regera. This research and testing has resulted in an 800 volt, 4.5kWh battery pack, making the Regera the world’s first 800V production car.
This extreme battery technology will now provide an amazing 525kW of discharge and up to 200kW of recharge. The only batteries in any form of automotive use that provide comparative performance for their size are those found in Formula 1 race cars.
The Koenigsegg Regera battery pack also boasts the highest cooling capacity of any battery in automotive use today. All electric vehicle manufacturers use coolant piped around the battery pack to draw heat from the batteries. There is always an area that traditional cooling pipes cannot reach, however. The Regera battery pack is housed in a sealed unit featuring optimized local coolant flooding across all critical heat-sensitive elements. Every critical surface within and around the battery stack is cooled as efficiently as possible.
Finally, there is the battery pack’s weight. Through research and investment in premium battery technology, the production version of the Regera will ship with a battery pack that not only performs better, but weighs just 75kgs, a saving of 40kgs over the concept battery.
Every cell of the pack is carefully monitored for voltage, state of charge, health and temperature. The cells are enclosed in a carbon fibre casing for efficiency, safety and stability. The battery is located in the most protected area of the car – the carbon-aramid chassis tunnel.
To put the revolutionary nature of the Regera into proper perspective, it has almost triple as many electric horsepower (700hp) than its closest hybrid rival, with over 300hp more in total horsepower. And yet the Regera remains at a very competitive weight, while still including features such as a six way adjustable electrical seat and a fully robotized body work.
A NEW LEVEL OF LUXURY
The Direct Drive transmission of the Regera delivers blistering performance, while at the same time offering one of the smoothest, most soothing driving experiences imaginable. It is a true Jekyll and Hyde experience that depends completely on your mood.
We have developed a completely new rear sub frame that allows the engine and transmission to rest on active soft mounts. When driving in normal conditions, the mounts stay soft and isolate engine noise and vibrations. During spirited driving, the mounts firm up to solidify the car and give greater response. The shock absorbers are active in both height and stiffness, adjusting instantly to your inputs behind the wheel.
The Regera can also be driven in absolute silence, with a full EV mode available for shorter periods of time.
LAST UPDATE ON 21-04-2017