hydrogen and electric
(from General Motors
Press Release) CADILLAC PROVOQ FUEL CELL CONCEPT DELIVERS
CLEAN, PETROLEUM-FREE PERFORMANCE AND SIGNATURE DESIGN
LAS VEGAS Cadillac
unveils a new vision for the future of luxury transportation with
the innovative Provoq fuel cell concept a hydrogen fuel cell
crossover vehicle that continues GMs commitment to displace
petroleum through advanced technology.
The Cadillac Provoq fuel cell concept is the latest example of GMs
groundbreaking E-Flex propulsion system, combining the new
fifth-generation fuel cell system and a lithium-ion battery to
produce an electrically driven vehicle that uses no petroleum and
has no emission other than water. The concepts fifth-generation
fuel cell technology is half the size of its predecessor, yet it has
been developed to produce more power and performance.
Cadillac is a natural fit for GMs next step in developing the
E-Flex platform, says Jim Taylor, Cadillac general manager.
Cadillac, at its very essence, is about premium luxury, design and
technology, so its fitting that Cadillac would be propelled by the
most elegant solution. This signals Cadillacs intent to lead the
industry with alternative-fuel technology.
Fuel-cell variant of the E-Flex
The concept can drive
300 miles (483 km) on a single fill of hydrogen with 280 miles
(450 km) from hydrogen and 20 miles (32 km) on pure, battery
A pair of 10,000 psi (700 bar) composite storage tanks beneath the
rear cargo floor hold 13.2 pounds (6 kg) of hydrogen to feed the
fuel cell stack, located under the hood. There, hydrogen mixes with
oxygen to generate electricity up to 88 kW continuous power. A
lithium-ion battery pack can store up to a total of 9kWh of
electrical energy and also provides a peak of 60 kW of power for
The electricity generated by the fuel cell is distributed to a 70 kW
co-axial drive system for the front wheels and individual, 40 kW
wheel hub motors on the rear wheels, giving the Cadillac Provoq its
all-wheel-drive traction and great driving dynamics. Its 0-60 mph
(approximately 100 km/h) speed of 8.5 seconds is a more than
30-percent improvement over the previous-generation fuel cell system
and with instantaneous torque to the wheels, it feels even faster.
Provoq has a top speed of 100 mph (160 km/h).
This is a vision of what comes next a fuel cell electric vehicle
that delivers the driving characteristics Cadillac customers want
and allowing them to do it without using a single drop of petroleum,
while emitting only water vapor, said Larry Burns, GM vice
president for research and development. This is proof that
alternate fuels and advanced technologies create even greater
opportunities to satisfy the luxury buyer.
With sleek, signature
Cadillac bodywork, the Provoq concept redefines luxury crossovers,
offering uncompromising passenger and cargo space to match its
performance and cruising range. Additional vehicle features include:
integrated in the roof to help power onboard accessories, such
as the interior lights, audio system and more
Front grille louvers
that close at highway speed to enhance aerodynamics, and open at
low speed to provide maximum cooling to the fuel cell stack
Purposefully dynamic design
The Provoq has a sleek,
athletic shape that builds on the second generation of Cadillacs
design renaissance, led by the 2008 CTS, with dynamic and purposeful
features that support the hydrogen fuel cell powertrain and
contribute to the vehicles overall efficiency.
All the people- and cargo-carrying capability customers expect in
crossovers and SUVs is available in the Provoq, along with the
premium attributes expected in a Cadillac, said Ed Welburn, vice
president, Global Design.
Active front grille,
with grille louvers that open when the fuel cell stack requires
Left- and right-hand
charging ports incorporated in stylish front fender vents
Flush door handles
that feature push-to-release operation
outside mirrors with integral turn signals
rear stop lamp incorporated into full-width, wraparound spoiler
taillamps with subtle fin design
Side glass mounted
flush with pillars
clear-covered space between the spokes, creating a sleeker
profile while maintaining Cadillacs signature bold wheel design
Low-drag roof rack
From the strong, shield
grille and vertical headlamps to the crisp body lines, the Provoq is
instantly recognizable as a contemporary Cadillac, said Hoon Kim,
exterior lead designer. Like the new CTS, it is bold and
expressive, but there is enhanced shape between the edges its a
new proportion for crossovers, with a fast, almost coupe-like rear.
Everything about the vehicle reinforces the notion that great style
and environmentally conscious transportation can go hand in hand,
said Kim. We didnt sacrifice proportion, stance or Cadillacs
iconic design cues; we used them to support the efficiency of the
They are the features customers expect, he said. The adaptability
of the E-Flex architecture enabled the designers to create a
great-looking vehicle, regardless of its alternative-fuel powertrain.
Kim points to the fender-mounted charge ports as prime example. They
allow overnight, plug-in charging that extends the driving range.
The ports have a satin-chrome appearance that incorporates an amber
light to indicate the system is charging and a green light to
indicate when charging is completed.
The ports are functional, but rather than hide them, they are
design elements of the Provoq, he said. Sweeping body lines that
culminate at the top and bottom edges of the ports suggest forward
thrust, even when the vehicle is stationary.
The vertical, neon-lit taillamps blend style with functionality,
too, as their finned shape was designed to make the Provoq as
aerodynamically efficient as possible.
Indeed, the Provoq has short overhangs and a sporty ride height that
is complemented by large, 21-inch wheels.
The wheels are wrapped in custom Michelin tires incorporating
Green-X technology. These low-rolling resistance tires feature a
tread pattern that mimics the H20 notation for water.
The tire designers and engineers at Michelin North America
enthusiastically accepted GMs challenge to create a custom
low-rolling resistance tire to complement the energy efficiency and
reduced environmental footprint of the Cadillac Provoq. During the
past 15 years, the tire maker has developed four generations of
Michelin green energy-saving tires, and the teams no-compromises
approach to the project helped reduce the Provoqs overall fuel
consumption without sacrificing road performance, grip and safety.
When used in conjunction with the other energy-efficient solutions
featured on the Cadillac Provoq, the benefits of Michelin green
energy-saving tires include:
A reduction in the
consumers overall cost of ownership
An extended vehicle
range through a more efficient use of on-board energy and its
A reduction of
vehicle impact on the environment through lower CO 2 and
Like the exterior, the
Provoqs interior blends style with function. It seats five and
incorporates the comfort, convenience and infotainment features
Cadillac customers seek. Most importantly, the fuel cell powertrain
does not intrude on passenger or cargo room.
The hydrogen fuel tanks are mounted beneath the cargo floor, with
the storage batteries located at the center of the chassis. The fuel
cell stack is located under the hood, giving the Provoq the interior
layout of a conventional crossover including a full cargo area and
a 60/40-split folding rear seat.
The interior is roomy, well-equipped and offers the space people
want in a crossover, said Matt Erdey, interior lead designer.
There are no compromises inside the Provoq to accommodate the fuel
cell powertrain and fuel tanks a factor that proves the technology
and real-world feasibility are growing closer together.
There may not be compromising reminders of the powertrain in the
interior, but the Provoq carries the instantly identifiable
hallmarks of a contemporary Cadillac interior, with an expressive,
It picks up the cues, refinement and attention to detail of the new
CTS and takes them to the next level, said Erdey. A contrasting
color scheme, extensive use of ambient lighting technology and
elements such as cut-and-sewn, hand-wrapped leather with French
seams are elements seen in current Cadillac models, but they are
amplified in the Provoq.
The interior has a contrasting, dark gray and light gray color
scheme, with chrome and satin-chrome accents throughout. Ambient
lighting extends across the instrument panel and into the door
panels, as well as the foot wells, sills and under the seats.
A unique instrument cluster with large, reconfigurable LCD displays
offers a multitude of vehicle information readouts, including fuel
cell information and vehicle performance. Like the CTS, the Provoq
has a prominent center stack that houses the audio and climate
systems, as well as a navigation system that rises out of the top of
the instrument panel. Also like the CTS, there is an integrated hard
drive that stores navigation maps, thousands of songs and more.
Between the front bucket seats is a large center console with a
fully enclosed storage compartment that is home to ports for
USB-connected devices and other electronics. The console also has a
cell phone holder with built-in Bluetooth and inductive charging.
The compact shifting mechanism on the console uses shift-by-wire
technology to engage the gears, resulting in more storage space
within the console.
A variety of recycled and recyclable materials were used, as well.
The headliner is
wrapped in a fully recyclable soy-based material
The carpet is made
of recycled polyester and jute
Leather used to
cover the seats and instrumental panel is free of harmful
Xorel material used
on the door panels and instrument panel; treated to perform as a
Chrome trim made
with less-harmful materials
interior components blend seamlessly with the more conventional
materials inside the Provoq, enhancing the vehicles integrated,
customer-focused environment. The same goes for the cargo area,
which features an auxiliary power outlet and a load floor that is
level with the hatch opening.
The integration of the features and technology is remarkable, said
Erdey. If you didnt know there was a hydrogen fuel cell stack
under the hood, youd never know it was anything but a roomy,