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Cadillac ELR Delivers Regeneration On Demand

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On: Wed, Apr 17, 2013 at 4:26PM | By: Chris Weiss


Cadillac ELR Delivers Regeneration On Demand

Brake regeneration is a staple of electric vehicles and hybrids. The technology repurposes the energy usually lost as heat during braking for the purpose of battery charging. Typically this is an automatic process that happens only during braking, but in the new Cadillac ELR, it’s available to the driver on-demand. 

GM calls the feature “Regen On Demand” and it’s activated via the paddle shifters located next to the steering wheel. Paddle shifters are usually dedicated to shifting gears on automated manual transmissions, but in the case of the ELR, the driver can pull back on the left or right paddle while coasting with his foot off the pedal. The Regen On Demand system activates a sort of light braking that slows the car more than it ordinarily would during coasting but less than full braking. Cadillac says that the dynamic performance under Regen on Demand is similar to what you’d experience when downshifting a manual transmission. It’s useful in situations like going into a turn or slowing for the traffic ahead.

Like other regenerative systems, the Regen on Demand system converts the momentum into electricity for charging the battery. The ELR also has a regular regenerative braking system.

Pulling back on the paddle to slow down allows the ELR driver to keep their foot close to the throttle, ready to accelerate,” ELR chief engineer ChrisThomason said. “It provides a more engaged, satisfying driving experience, and when you consider the added benefit of re-capturing energy, its also a smart thing to do.”

Launched at this year’s North American International Auto Show in Detroit, the Cadillac ELR is essentially a luxury version of the Chevy Volt. The ELR uses a more powerful 180-hp electric motor capable of 295 lb-ft of torque. That electric motor can power the car up to 35 miles on battery power alone, after which point an 84-hp four-cylinder engine generator kicks in and sends the car rolling another 265 miles or so.The ELR’s 16.5 kWh lithium-ion battery pack charges in 4.5 hours when using a 240-volt charger.

As any Cadillac buyer would expect, the ELR also gets premium tuning and equipment, including an upscale interior with leather trim, wood accents, available carbon fiber trim, and Cadillac’s CUE infotainment system. The car hugs the road with advanced suspension and damping systems, 20-inch wheels with low rolling resistance tires spread across wide tracks, and dual-pinion, rack-mounted electric power steering.

Cadillac plans to begin production in late 2013 and US sales early next year. It has yet to release pricing information.


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RoadKill | 4:43PM (Wed, Apr 17, 2013)

this is what the Volt was supposed to be but then the next thing you know....its a Prius.



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