luxury coupe concept continues GM's leadership in the electrification of the automobile
DETROIT - General Motors unveiled a more potential of electric propulsion today, this time in the form of luxury transportation with the Concept Cadillac Converj. Cadillac Converj was developed as a grand touring coupe well appointed with bold design and a host of interactive technologies.
The concept of four passengers Converj is intended to show how GM's revolutionary electric propulsion - Voltec called - can supply a luxury coupe with a typical Cadillac "no compromise" design. The technology allows up to 40 miles of electrical conduit and gas emissions-free with extended-range capability of hundreds of miles.
Bob Lutz, GM’s vice chairman of Global Product Development, said the Converj concept has production substance. “It’s a logical extension of our plan to reinvent the automobile,” he said. “It clearly shows what a Cadillac electric vehicle could look like, and clearly indicates that global luxury customers can have a car that has both strong design and electric propulsion with a total range of hundreds of anxiety-free miles.”
Cadillac’s extended-range electric vehicle (E-REV) concept has a new body style that is an evolution of the brand’s traditional Art and Science design theme. An aggressive, forward-leaning arc profile is the foundation for the sporting stance. And more than a Cadillac in form, Converj is also intended to be a Cadillac in substance, with the premium materials, technology and driving dynamics that are hallmarks of the brand.
Voltec – innovative propulsion technologyThe Cadillac Converj’s Voltec electric propulsion system is made up of a 16-kWh, T-shaped battery, an electric drive unit, and a four-cylinder engine-generator. It uses electricity as its primary source to drive the car.
A thermally managed battery pack contains more than 220 lithium-ion cells that provide the primary power to drive the Converj electrically up to 40 miles without using fuel or producing tailpipe emissions. The battery is integrated into the Converj’s chassis and stores electricity from the grid when the vehicle is plugged in. It takes less than three hours to recharge the battery at 240V, or about eight hours from a 120V outlet.
When the battery’s energy is low, the Converj seamlessly switches to extended-range mode. During this secondary level of operation, electricity needed to power the vehicle is created on-board by a flex-fuel-powered engine that operates much like a home generator to create electricity. The engine-generator ensures a constant supply of power for hundreds of miles until the car is refueled or plugged in to recharge the battery. This extended-range mode eliminates the range anxiety that comes with driving pure electric vehicles that offer no backup power when the battery charge is low.
Whether in electric or extended-range mode, the Converj is propelled all the time by an electric drive unit. It converts electrical energy from the battery or the engine-generator into mechanical energy to drive the front wheels. It also delivers 273 lb.-ft. (370 Nm) of instant torque, for a quick launch, and 120 kW of power. The top speed is 100 mph.
There is no compromise in vehicle performance in either mode of operation. To enhance the ride feel, the Converj also features GM’s Magnetic Ride Control; and for even greater efficiency, energy during braking is captured and stored in the battery.
Pure Cadillac designThere’s no mistaking the Converj for anything but a Cadillac, according to Lutz. “An aggressive, forward-leaning profile hints at a new, progressive theme and proportion in Cadillac’s design evolution,” he says. “The new proportion showcases a uniquely shaped, modern vision of a personal luxury 2+2.”
The overall shape is reinforced by a prominent, sweeping body line with large, 21-inch (front) and 22-inch (rear) wheels pushed to the edges of the body. The Converj exterior is painted a dark silver tri-coat that GM designers dubbed “Reaction.”
An all-glass roof incorporates solar panels that help offset power drain from the vehicle’s accessories. Additionally, several aerodynamic and design efficiencies were incorporated to enhance the driving range, including:
A full under-vehicle cover (belly pan)
Minimal grille openings that reduce drag at the front of the vehicle
Low-profile rearview cameras replace conventional outside mirrors to reduce drag
Wheels are shaped to push air outward for smoother body side airflow
The Converj also incorporates vertical headlamp and taillamp elements, with light pipe technology.
“Vertical lamps are Cadillac signatures and the Converj builds on the brand’s light pipe technology with bolder light emitting diode (LED) and high-intensity discharge elements front and rear,” said Clay Dean, global design director for Cadillac. “There is also a unique daylight light ’spear’ at the top of the headlamps.”
Luxury meets technology insideThe Converj’s interior has advanced features and luxurious appointments blending efficiency and environmental consciousness. The 2+2 configuration is trimmed in contrasting Winter White synthetic suede – including the top of the instrument panel – and Midnight Black leather, with polished aluminum and wood grain accents. Renewable materials are used throughout such as wool-blend carpeting, a headliner made from silk, suede made from post-industrial content and more.
A technologically advanced driver center increases efficiency and reduces the draw on the battery. Features include:
New, organic light-emitting diode technology used on reconfigurable instrument cluster
Touch-screen navigation, climate, center-stack controls and audio systems
Adjustable, overhead white ambient lighting
Unique “power on” sequence featuring blue-lit console graphics
Screen displays for features including regenerative braking, battery charge level and power output
No inside rearview or outside mirrors; cameras provide surrounding images on a screen placed high on the instrument panel for a full, panoramic view
Push-button ignition and power-folding front seats
General Motors Corp. (NYSE: GM), the world’s largest automaker, has been the annual global industry sales leader for 77 years. Founded in 1908, GM today employs about 252,000 people around the world. With global headquarters in Detroit, GM manufactures its cars and trucks in 34 countries. In 2007, nearly 9.37 million GM cars and trucks were sold globally under the following brands: Buick, Cadillac, Chevrolet, GMC, GM Daewoo, Holden, HUMMER, Opel, Pontiac, Saab, Saturn, Vauxhall and Wuling. GM’s OnStar subsidiary is the industry leader in vehicle safety, security and information services.
SPECIFICATIONSGeneral
Vehicle type:
2-door, front-wheel-drive 2+2 coupe
Category:
extended-range electric vehicle
Chassis:
independent McPherson struts, front magnetic ride, compound crank twist axle rear, four-wheel disc brakes, full regenerative brakes to maximize energy capture, electric power-assist steering
Seating capacity:
four
Performance
Top speed (mph / km/h):
100 / 161
EV range, city and highway (miles):
Up to 40, based on EPA cycle
Dimensions
Wheelbase (in / mm):
108 / 2742
Length (in / mm):
182 / 4620
Width (in / mm):
74 / 1883
Height (in / mm):
55 / 1386
Battery system
Type:
lithium-ion (w/ liquid-controlled thermal management system)
Energy (kWh):
16
Charge time:
Less than 3 hours at 240V/8 hours at 120V
Electric drive unit
Power (kW):
120
Torque (lb-ft / Nm):
273 / 370
Exterior
Tire size:
specially developed low rolling resistance tires on 21- and 22-inch forged aluminum wheels
Toyota Motor Sales (TMS), U.S.A., Inc. today announced that it will display the Toyota FT-EV concept on opening Media Day at the North American International Auto Show (NAIAS), confirming its plan to launch an urban commuter battery-electric vehicle (BEV) by 2012. This announcement, coupled with its compressed natural gas powered Camry Hybrid concept display at the 2008 Los Angeles Auto Show, signal Toyota’s intention to broaden the scope of its advanced alternative-fuel vehicle development.
“Now, more than ever, while we are so focused on the pressing issues of the moment, we cannot lose sight of our future,” said Irv Miller, TMS Group Vice President, Environmental and Public Affairs. “Nowhere is this more important than with our industry’s duty and commitment to provide true sustainable mobility with vehicles that significantly reduce fuel consumption, our carbon footprint and overall greenhouse gases.” The FT-EV concept shares its platform with the revolutionary-new iQ urban commuter vehicle. Already a huge hit in Japan, the iQ is lightweight and seats four passengers in comfort and security, while delivering exceptional mileage, sporty performance, unique refinements and a fun, youthful image.
Toyota’s FT-EV concept imagines an urban dweller, driving up to 50 miles between home, work and other forms of public transportation, such as high-speed rail. Although, for now, the FT-EV remains a pure concept, it represents a natural pairing of product strategies.
“Last summer’s four-dollar-a-gallon gasoline was no anomaly. It was a brief glimpse of our future,” said Miller. “We must address the inevitability of peak oil by developing vehicles powered by alternatives to liquid-oil fuel, as well as new concepts, like the iQ, that are lighter in weight and smaller in size. This kind of vehicle, electrified or not, is where our industry must focus its creativity.” Although BEVs and new smaller vehicles like the iQ will be a key component of Toyota’s sustainable mobility strategy, the conventional gas-electric hybrid, like the all new third-generation Prius, is considered Toyota’s long-term core powertrain technology.
Last year, Toyota announced that it planned to sell one million gas-electric hybrids per year sometime during the early 2010s. To accomplish this, Toyota will launch as many as 10 new hybrid models by the early 2010s, in various global markets. The new third-generation Toyota Prius and all new Lexus HS250h, both debuting in Detroit, are the first two examples of that effort. Also, last year, Toyota announced that it would roll-out a large number of plug-in hybrid vehicles (PHVs) to global lease-fleet customers in 2010. That schedule has been moved up.
Beginning in late 2009, Toyota will start global delivery of 500 Prius PHVs powered by lithium-ion batteries. Of these initial vehicles, 150 will be placed with U.S. lease-fleet customers. The first-generation lithium-ion batteries powering these PHVs will be built on an assembly line at Toyota’s PEVE (Panasonic EV Energy Company, LTD) battery plant, a joint-venture production facility in which Toyota owns 60 percent equity. During its development, the new Prius was designed and engineered to package either the lithium-ion battery pack with plug-in capability, or the nickel-metal hydride battery for the conventional gas-electric system. The 500 PHVs arriving globally in late 2009 will be used for market and engineering analysis. Lease–fleet customers will monitor the performance and durability of the first-generation lithium-ion battery, while offering real world feedback on how future customers might respond to the plug-in process. “Future customers will have high expectations for these emerging technologies. This Prius PHV fleet program is a key first step in confirming how and when we might bring large numbers of plug-in hybrids to global markets,” said Miller. “Our business is no longer about simply building and selling cars and trucks. It is about finding solutions to mobility challenges today and being prepared for more daunting challenges in our very near future.”
