Saturday, 23 May 2015

The Koenigsegg Regera; The Hypercar whithout a conventional gearbox

It's Koenigsegg's ‘Regera' - translated as ‘to reign'
in Swedish - and is a milestone in the history of our  favourite Swedish hypercar
manufacturer, because it's been built as a
luxurious car with crushing speed.
Just how crushing will blow your minds. The
According to TopGear, Regera sits on a highly modified Agera chassis,
here significantly changed to accommodate a 9kW
battery pack in the centre of the car, which we'll
get to shortly.
This means the entire front end had to be
reworked, while the rear chassis - in a first for
Koenigsegg - was fitted with new rubber mounts
instead of solid ones, to provide more comfort and
Then there's the drivetrain: Koenigsegg's proven
5.0-litre twin-turbo V8 sits proudly in the middle,
pumping out a healthy 1100bhp alone, direct to
the rear wheels.
But instead of being attached to a normal
transmission, the Regera uses something called
the Koenigsegg Direct Drive system. There's a
small, crank-mounted electric motor to fill the
torque gap (and act as a starter motor) together
with a hydraulic coupling.
Each rear wheel then gets its own electric motor,
and we're told that triplet of electric motors
amounts to around 700bhp alone. Christian tells
us that from take-off, with the coupling open, you
power off purely on electric drive, with no need for
a gearbox. As soon as it gains a few more revs,
the hydraulic coupling begins to close, and the
smaller crank-mounted electric motor joins in to
help the bottom part of the torque curve.
And then finally, once the engine gets up to speed,
that kicks in from around 30mph upwards. "We
managed to take a heavy, expensive lump out of
the equation [the transmission], without sacrificing
the ability of the combustion engine to provide
drive to the rear wheels," Christian tells TG.
The Regera is rear wheel drive only, so 0-62mph
takes a relatively tardy 2.7 seconds. "We can't go
any faster than that because of traction," Christian
says. 0-186mph takes 12 seconds flat, while
0-250mph takes under 20 seconds. It'll go from
93mph to 155mph in just 3.2 seconds, and top out
at 255mph. Let those numbers swirl around your
head for a moment.
Because it's a petrol-electric hybrid, you can travel
up to around 18 miles on pure electric power
alone, but we suspect with a twin-turbo 5.0-litre
V8 on board, you'll likely want to utilise
everything. In total, Koenigsegg reckons on an
output somewhere close to 1800bhp and 1475lb ft
of torque.
Why remove the transmission completely? "I've
been wanting to create something like this without
a CVT's horrible elasticity, and the weight and
complexity transmissions bring," Christian tells TG.
"I came up with the idea last summer, and
calculated that there is no need to have any gears.
It was a eureka moment for me!"
The body is a marvel, with all sorts of aero going
on: witness the monster side scoops, the front
diffuser arrangement and the sleek bodywork.
There's also a foldable top mounted rear wing, an
active chassis with active shock absorber stiffness
front and back, active aero flaps underneath the car
- both left and right - that you can control
individually as on the One:1, and ‘soft-close'
doors. The front tyres are also wider than the
rears, to compensate for the weight distribution of
that battery pack.
Inside there's a 9.1-inch infotainment system, and
six-way adjustable carbon memory seats, too.
Want one? The Regera's base price is $1,890,000 -
just over £1.2m - and Christian is only building 80
units. "We've already sold four even before
anybody has seen the car," he tells us, "so the
mood for this feels very positive".
This show-stand beauty is car number one, and is
around '95 per cent finished'. After the Geneva
show, it'll be completed, and then ‘beaten up'
around the track to finalise its development. We
can't wait to have a go.


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