RACING TO THE FUTURE: HOW FORD
CREATED THE GT SUPERCAR TO TEST TECHNOLOGIES FOR TOMORROW'S VEHICLES
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All-new race-winning Ford GT supercar serves as a
test bed for new technologies and advanced lightweight materials that will
benefit future Ford cars, trucks, SUVs and electric vehicles
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Patent-pending rear wing improves track performance
by changing shape like an airplane wing, increasing downforce on the car,
with minimal impact on drag, to help aid acceleration, cornering and
braking
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GT’s aerodynamics produce positive downforce in all
conditions, giving GT stability and grip on and off the track
DEARBORN, Mich., May 12, 2017 – In creating the
all-new high-performance Ford GT, the pioneers behind the supercar
designed it not only to win races but also to serve as a test bed for new
technologies and ideas for future vehicles across Ford’s vehicle lineup.
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“When we began work on the all-new Ford GT in 2013,
the team had three goals,” said Raj Nair, Ford executive vice president of
Product Development and chief technical officer. “The first was to use it
as a training ground for our engineers as we develop future engine
technology and stretch our understanding of aerodynamics. Then, to push
the boundaries of advanced material usage, such as lightweight carbon
fiber. Finally, we set out to win the Le Mans 24 Hours, referred to by
many as the ultimate test of endurance and efficiency.”
At the same time the team was developing the GT, Ford combined several of
its performance teams – Ford SVT, Team RS, Ford Racing, performance
vehicle parts and merchandise licensing – into a single group called Ford
Performance.
“Without this kind of integrated teamwork and combined organization, it
would have been impossible to deliver the all-new Ford GT in its current
form,” said Dave Pericak, global director, Ford Performance. “This kind of
collaboration was critical to not only bringing Ford GT back to life but
for experimenting with the kind of innovations needed to create the
ultimate supercar.”
GT has proven power to inspire. The 2005 Ford GT, for instance, featured a
lightweight aluminum alloy body that helped reduce weight to improve
performance.
Lessons learned from its production led to the innovative use of
high-strength aluminum alloy in today’s Ford F-Series pickup trucks and
the all-new Ford Expedition full-size SUV – shedding hundreds of pounds of
weight, while also improving capability, performance and fuel efficiency.
Putting the dynamic in aerodynamics
While GT looks fast standing still, the team optimized every shape to make
it as aerodynamic as possible.
A key goal was to reduce drag and optimize downforce – which helps give
the supercar stability and grip on the track while accelerating, cornering
and braking.
GT’s aerodynamics change on demand to meet varying driving conditions,
thanks to moveable elements around the body, including special ducts in
the front, and a large deployable wing. The flaps open and close depending
on whether GT’s wing is up or down, so the car remains aerodynamically
balanced from front to back at all speeds. When the wing is up, the ducts
close to increase downforce; when the wing is down, the ducts open to
decrease downforce.
The supercar’s wing includes all-new Ford technology – a patent-pending
design that changes the shape of the airfoil for maximum efficiency when
fully deployed. The unique design also includes a small gurney flap which,
when combined with the shape change, results in a 14 percent improvement
in overall efficiency.
Even the engine helps GT’s aerodynamics. The compact six-cylinder design
of the car’s EcoBoost® engine allowed the team to taper its fuselage to
more efficient dimensions than a larger V8 would have allowed. In
addition, the low placement of the engine’s turbochargers and outboard
placement of the turbo intercoolers ahead of the rear wheels help to taper
the fuselage around the engine.
The GT's aerodynamics produce positive downforce in all conditions. At
high ride height, the downforce has a balance of 30 percent front. In low
ride height, the downforce balance is maintained at 29 percent front.
Slimming down
Carbon fiber is an important new element that helps GT deliver both weight
savings and sleek body shapes in ways not possible with steel or aluminum.
Working with partners, including Multimatic and DowAksa, Ford is
developing new ways to enable future faster, high-volume production of
carbon fiber parts.
For example, GT’s iconic flying buttresses that extend from the roof to
the rear fenders wouldn’t be possible in steel or aluminum because of the
limitations of conventional metal stamping. Yet, carbon fiber can be
shaped into complex geometric designs because it’s cut to a specific shape
as a cloth and strengthened by curing at a high temperature.
Fueling the GT engine – and beyond
Ford GT’s 3.5-liter EcoBoost engine is the company’s most powerful
EcoBoost ever, delivering 647 horsepower. It was developed alongside the
GT race engine and the 3.5-liter EcoBoost engine used in the F-150 Raptor
high-performance off-road pickup, which shares almost 60 percent of its
parts with GT’s engine.
For instance, during racing, the test engine’s crankshafts in the Daytona
Prototype were cracking under grueling conditions. With little time to get
ready for the Sebring endurance race that year, the team made a key
decision to substitute the Daytona prototype’s race crankshaft with a
pre-production F-150 Raptor crankshaft. The Daytona prototype won its
first race at Sebring that year.
“We pushed the engine’s limits beyond what we might consider in
traditional development programs, which is important as we continue to
advance EcoBoost technology as a centerpiece of the company’s global
lineup,” said Bob Fascetti, Ford vice president, powertrain engineering.
The team also created innovative anti-lag turbo technology that can help
maximize the GT’s ability to power out of corners. This technology works
by keeping the throttle open when the driver is not stepping on the gas
pedal. The fuel injectors are off but turbo speed and boost are maintained
for faster engine response and acceleration as soon as they hit the gas.
Further improving engine performance, GT features an all-new port and
direct dual fuel-injection setup to enhance engine response. The engine is
paired with a responsive seven-speed dual-clutch transaxle for nearly
instantaneous gear changes and exceptional driver control.
Get low
“All of the weight savings and engine advancements served a singular
purpose – creating the fastest, most-efficient Ford GT ever,” Pericak
said. “Once that was achieved, we reinvested some of those weight savings
in truly innovative technology that made the car even faster and more fun
to drive.”
That includes GT’s hydraulic suspension, which changes ride height with a
turn of the knob, which adjusts drive modes.
The suspension lowers the supercar from normal mode into track mode – a 50
millimeter or nearly 2-inch difference the driver can see and feel. Track
mode raises the wing and closes the front splitter ducts for optimal
downforce for spirited, closed-course driving.
When the GT changes modes from high to low ride height, changes in spring
rates, matching damper settings, and active aerodynamics, come together to
create two unique cars in one.
Another feature of the hydraulic suspension – front-lift mode – helps GT
clear speedbumps and driveways. The driver can raise the front of the car
on demand at speeds below 25 mph. The system automatically returns to
normal lower ride height when it reaches 25 mph.
Tech for all
GT’s role as a technology test bed is evident throughout the supercar,
with some innovations, such as carbon fiber lightweighting, serving as
longer-term possibilities, while others are hitting showrooms soon. For
example, all-digital dashboard technology, similar to that in the
supercar’s, is available in the 2018 Mustang, and is coming to additional
new Ford vehicles.
Additionally, the company’s push into customized driving modes that help
customers fit a vehicle’s performance to specific conditions is expanding
rapidly. Ford GT’s track mode, also offered in Mustang and other
performance models, helps enthusiasts maximize racing performance, while
the all-new F-150 Raptor features Baja off-road mode.
As new Ford GTs continue to roll into owner driveways, other Ford
customers can expect to find a little bit of the supercar in their future
vehicles as well.
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