Monday, December 16, 2013

Chevy Corvette Hybrid@more info [4 VIDEO]

Chevy’s Corvette has come a long way, engine-wise. When it was first introduced in 1953, the car came with an asthmatic 6-cylinder engine as its only option. 60 years later, in 2013, the car’s base engine is a 6.2 L V8 making over 450 hp. Corvette customers have changed, in other words.
There is only one Chevy Corvette, and it’s a fire-breathing V8 beast horsepower to spare. All that power comes at the cost of lots of expensive crude oil. But not Wayne Bickley’s Corvette, which now runs on an all-electric drivetrain.
According to a series of YouTube videos and Wayne’s profile on EVAlbum, the electric drive train consists of 18 16-volt batteries for 288 volts of power. That’s enough for an estimated 85 mph top speed, and 20 miles of “spirited driving.” It’s not exactly the fastest car on the road. An 11-second all-electric Camaro this ain’t, but it is still pretty cool if you ask me. And I’m glad my editor Paul did.
Paul over at LSxTV, another website that I write for, sent me this video knowing that I am into stuff like this. He knows me well, and I knew I had to share it with you guys as well, so for the nitty gritty head over there for a peek at the other side of Chris DeMorro.
The conversion took Wayne just 3 months to do after work, and the engine he replaced was a supercharged 396…that’s lots of horsepower replaced by something with a lot less. However, I was able to contact Wayne via YouTube, and he told me that this is just the beginning. While his initial plans called for two electric motors, he instead is planning on upgrading to a 250 horsepower, 11″ DC electric motor that will provide a lot more oomph for this former performance icon.
The thought of a Chevrolet Corvette with a hybrid-electric powertrain threatens to make their heads explode.
The all-new 2014 Chevrolet Corvette Stingray has received rave reviews for its styling, performance, and improved interior.
It will be fitted with many new, faster, and (increasingly) more fuel-efficient powertrains over a model life that's likely to approach 10 years.
If hybrid or plug-in hybrid technology could give it the requisite performance--and boost fuel efficiency as well--would Corvette enthusiasts go for it?
For what it’s worth, I think the logical move for Chevy would be to build a hybrid Corvette around the same kind of “mild hybrid” system found in the last-gen Malibu and the current range of “eAssist” Buicks. The eAssist battery pack and 15 hp electric “starter” motor shown, below which doesn’t sound like much, but the motor also puts down almost 80 lb-ft of torque at 0 RPM, helping the car get off the line and allowing for relatively easy implementation of stop-start technology on the big-engine Corvette. In a Buick, the system improves city MPG by over 20%, a boost that GM would love to give its halo car.
At that point, we mused that GM might employ its (now-departed) Two-Mode Hybrid system to produce a Corvette with total powertrain output of, say, 750 horsepower.
If a hybrid Chevy Corvette ever came to pass, in other words, it would hardly be a hybrid in the mode of the quintessential Toyota Prius.
In this case, the hybrid technology is all about torque and performance, and has little to do with reducing fuel use. Specifically, the Quanta Corvette QHP770 has two 134-horsepower electric motors dropped into the car's rear differential. Combined with the Corvette's existing mill, the car's got 770 horsepower.
The all-new Corvette Stingray shares only two parts with the previous generation Corvette. It incorporates an all-new frame structure and chassis, a new powertrain and supporting technologies, as well as completely new exterior and interior designs. Highlights include:
• An interior that includes real carbon fiber, aluminum and hand-wrapped leather materials, two new seat choices – each featuring a lightweight magnesium frame for exceptional support – and dual eight-inch configurable driver/infotainment screens
• Advanced driver technologies, including a five-position Drive Mode Selector that tailors 12 vehicle attributes to the fit the driver's environment and a new seven-speed manual transmission with Active Rev Matching that anticipates gear selections and matches engine speed for perfect shifts every time
• An all-new 6.2L LT1 V-8 engine combines advanced technologies, including direct injection, Active Fuel Management, continuously variable valve timing and an advanced combustion system that delivers more power while using less fuel
• Lightweight materials, including a carbon fiber hood and removable roof panel; composite fenders, doors and rear quarter panels; carbon-nano composite underbody panels and a new aluminum frame help shift weight rearward for an optimal 50/50 weight balance that supports a world-class power-to-weight ratio
• A sculptured exterior features advanced high-intensity discharge and light-emitting diode lighting and racing-proven aerodynamics that balance low drag for efficiency and performance elements for improved stability and track capability
• Track-capable Z51 Performance Package including: an electronic limited-slip differential, dry-sump oiling system, integral brake, differential and transmission cooling, as well as a unique aero package that further improves high-speed stability.
Twelve performance parameters are adjusted with the selection of each mode, including:
• Gauge cluster configuration: The Tour, Eco and Weather modes feature displays for trip data, audio and navigation; Sport mode shows classic, easy-to-read sports car gauges; and Track mode's configuration shows a gauge design based on the Corvette Racing C6.R race car display with lap timer
• ETC (Electronic Throttle Control): Adjusts the throttle input curve for the selected mode for improved responsiveness
• Paddle-shift automatic transmission: Adjusts shift comfort and shift points
• Active Fuel Management: in normal mode, the LT1 engine uses V-8 power during acceleration and V-4 power when coasting; in Eco mode the engine remains in V-4 mode to improve fuel economy until aggressive acceleration is needed
• Exhaust (active exhaust system): The system adjusts the timing of the electronically controlled exhaust valves to enhance audible feedback from the V-8 depending on the drive mode
• Electronic limited-slip differential (Z51): Adjusts the rate at which the limited slip engages, to balance between steering response and stability in different driving conditions; more aggressive performance in Sport and Track modes
• Steering: Assist effort is adjusted in the modes to provide the driver with the correct steering feel for the driving condition
• Magnetic Ride Control: Adjusts shock damping based on road conditions, from optimized comfort to performance driving
• Launch control: Available in Sport and Track modes for manual and automatic transmissions, providing maximum off-the-line acceleration
• Active handling (StabiliTrak stability control): A "competitive" setting is available in Sport and Track modes and is more suited for on-track conditions. It can also be disabled, giving the driver complete control
• Traction control: Weather mode tailors traction control and engine torque for driving in inclement conditions
• Performance Traction Management: Available in the Sport and Track modes and offers five settings of torque reduction and brake intervention for track driving.
Engineered to race, built for the road
• New aluminum frame structure is 57-percent stiffer and 99 pounds (45 kg) lighter than the current steel frame
• Innovative use of composite materials, including carbon fiber the hood and roof panels, lightweight Sheet Molded Compound for the fenders, doors and rear quarter panels, and carbon-nano composite for the underbody panels help reduce the weight of the body by a 37 pounds (17 kg)
• New LT1 V-8 uses advanced technologies to produce more power with less fuel and is paired with an industry-exclusive seven-speed manual transmission with Active Rev Matching for more precise up and down shifts.
The new Corvette Stingray takes advantage of lightweight materials, advanced manufacturing techniques and technology transfer from the Corvette Racing program to produce an ideal 50/50 weight balance and to deliver a world-class power-to-weight ratio.
"Chevrolet has a long history of using racing to improve production cars, and nowhere is that more evident than with Corvette," said Jeuchter. "We continually apply technologies and strategies developed for Corvette Racing directly to the production car. That influence can be seen in virtually every aspect of the new Corvette Stingray, from the aerodynamic design to the use of carbon fiber, to the cooling techniques and even in the brake system
The technologically advanced foundation is an all-new aluminum frame structure that is 57 percent stiffer and 99 pounds (45 kg) lighter. The greater torsional rigidity reduces unwanted noise and improves ride and handling.
Compared to the previous generation, which used continuous hydroformed main frame rails with a constant 2mm wall thickness, the new Corvette's frame features main rails composed of five customized aluminum segments, including aluminum extrusions at each end, a center main rail section and hollow-cast nodes at the suspension interface points. Each segment is tuned – varying in thickness from 2mm to 11mm – tailoring the gauge, shape and strength properties to optimize the requirements for each frame section with minimal weight.
The frame is assembled at an all-new welding shop at the Bowling Green Assembly Plant using a unique laser welding process in which a computer-controlled beam of high energy joins the components with exceptional precision and tolerances of about 0.001-inch.
Supporting the frame's greater strength and lower weight are complementing chassis elements, including hollow-cast aluminum front and rear cradles that are approximately 25-percent lighter and 20-percent stiffer than the solid cradles used on the previous structure.
The innovative use of materials includes a standard carbon fiber hood and roof panel, as well as underbody panels created with carbon-nano composite technology, an advanced blend of traditional composite material and carbon fiber, which allows lighter underbody panels without a loss of strength or stiffness. Fenders, doors, rear quarter panels and the rear hatch panel are made with lighter-density Sheet Molded Compound than the previous generation. Combined, these materials save approximately 37 pounds (17 kg) versus the previous body structure.
The lightweight elements of the Stingray contribute to the ideal 50/50 weight balance. Combined with its estimated 450 horsepower (335 kW), the new Corvette delivers a better power-to-weight ratio than the Porsche 911 Carrera or Audi R8.
Those 450 horses are generated by an all-new LT1 6.2L Small Block V-8 engine, which produces an estimated 450 lb.-ft. of torque (610 Nm). More importantly, it generates 50 lb.-ft. more low-end torque than the previous 6.2L engine, matching the 7.0L LS7 engine from the 2013 Corvette Z06 from 1,000 to 4,000 rpm.
The engine's performance comes from combining advanced technologies like direct injection, Active Fuel Management and continuously variable valve timing with an advanced combustion system. More than 10 million hours of computational analysis went into the new Small Block's design, including more than 6 million hours alone on the combustion system.
The LT1 is backed by a choice of active exhaust systems that are less restrictive than the previous generation, due in part to an increase in diameter from 2.5 inches to 2.75 inches. The standard system offers a 13-percent improvement in airflow and features a pair of butterfly valves that contribute to greater refinement at cruising speeds when the engine is operating in fuel-saving V-4 mode.
An available dual-mode active exhaust system offers a 27-percent improvement in airflow. It features two additional valves that open to a lower-restriction path through the mufflers. When open, these valves increase engine performance and produce a more powerful exhaust note.
The LT1 is mated to either a six-speed paddle-shift automatic transmission or an industry-exclusive TREMEC TR6070 seven-speed manual with Active Rev Matching. The Corvette retains its distinctive rear transaxle layout for optimal weight balance.
The seven-speed manual incorporates rev-matching technology for upshifts and downshifts. This driver-selectable feature can be easily engaged or disengaged via paddles on the steering wheel. The seven-speed is used with a new dual-mass flywheel and dual-disc clutch, which deliver greater shift quality and feel through lower inertia. The transmission with the Z51 Performance Package includes specific close-ratio gearing for more aggressive driving.
"Active Rev Matching makes the new Corvette easier and more fun to drive in performance conditions," said Jeuchter. "It anticipates the next gear selection and electronically 'blips' the throttle to match engine speed for a seamless gear change."
A six-speed Hydra-Matic 6L80 paddle-shift automatic is also available. It is optimized for use with Active Fuel Management and features a lower-inertia torque converter for improved shift quality and shift speeds. In addition, shift feel and shift points can be adjusted through the Driver Mode Selector.
Chevy says a Corvette Hybrid will be on the way at some point (makes sense). BMW and Toyota are working together and we already know there'll be a Z5 Roadster! Also, Cadillac has a few new SUV/Crossover models on the way by 2017,and someone is most definitely Doing It Wrong! That and more all today on Fast Lane Daily, hosted by Derek D!

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