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Cadillac Reveals More Details On CT6's Plug-in Hybrid Technology, Features New Electric Variable Transmission

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On: Fri, Apr 24, 2015 at 2:16PM | By: Carl Malek

Cadillac Reveals More Details On CT6's Plug-in Hybrid Technology, Features New Electric Variable Transmission

With the launch of the CT6 flagship sedan drawing ever closer, Cadillac has shed some new light on the revolutionary PHEV (plug-in hybrid electric vehicle) technology that will make its debut on the CT6, and how it aims to rewrite the way PHEV varaints are built.

Serving as the most fuel efficient member of the CT6 family, the PHEV variant stands out by offering an all-new electric variable transmission which was specifically designed for applications in rear-wheel-drive vehicles. The novel gearbox also utilizes dual electric motors and is paired with Cadillac's familiar 2.0-liter turbocharged four-cylinder engine. In this particular application, the combination is good for a healthy 335 horsepower, and a stout 432 lb-ft of torque. While these figures may not seem like much, the engine's horsepower is equal with the brand's naturally aspirated V6, and, thanks to the torque-rich electric motors, the latter figure is superior to the range-topping 3.0-liter twin turbocharged V6 which helps enhance the engine’s reputation as an engineering wonder.

Travis Hester, CT6 chief executive engineer, highlighted the PHEV’s potential, “The CT6 PHEV will deliver exceptional smooth, responsive acceleration that Cadillac luxury sedan owners demand.” Hester also touched upon the high levels of drive quality that the EVT brings to the CT6, “We have managed to achieve superior drive quality, when compared to our PHEV competitors, due to our exclusively designed EVT.” However, for buyers who prefer maximum electric driving range versus marshmallow-like ride quality, Cadillac claims that it has addressed the needs of those buyers by equipping the car with a 18.4-kWh battery pack which is located between the rear seat and the trunk. The system as a whole is consists of 192 prismatic pouch cells that feature an active thermal control system that helps retain maximum charge range even after years of wear and tear.

Formal range estimates have not been announced by the company (look for that bit of information to arrive closer to the CT6’s launch) but Cadillac claims that the setup has enough electrical charge for “most daily commutes”. This is more than its closest competitor, the Audi A6 L e-tron, which utilizes a smaller battery but boasts a 31-mile driving range—the Audi A6 L e-tron, however, will be sold exclusively in China. GM has not revealed a formal launch date for the CT6 PHEV; expect the model to make its appearance after its standard-issue siblings are launched later this year with a possible appearance sometime in 2016.


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