As expected, Cadillac announced the addition of a plug-in hybrid (PHEV) powertrain for its range-topping CT6 sedan at the Shanghai Auto Show.
The powertrain combines a 2.0-liter turbocharged four-cylinder gasoline engine with an all-new rear wheel electric variable transmission (EVT) that incorporates two electric motors and draws energy from an 18.4 kWh lithium-ion battery pack positioned between the rear seat and the trunk.
GM estimates the system is capable of producing a combined output of 335 hp (250 kW) and 432 lb-ft (586 Nm) of peak torque, stating that fuel economy will be "more than double that of the car’s conventional engine offerings, as measured by miles per gallon equivalent".
The driver will be able to choose among three operating modes named Normal, Sport and Hold:
• Normal: Designed for everyday commuting. Provides ideal balance of comfort, performance and maximized EV range and fuel economy.
• Sport: Provides more aggressive pedal mapping for improved off-the-line feel and a stiffer steering response.
• Hold: Allows owners to select when the CT6 PHEV uses its engine, reserving the remaining battery charge for later use. This feature helps enhance efficiency because owners who mix city and highway driving can save the battery charge for city travel, where the CT6 EV mode operates most efficiently.
The CT6 PHEV will get GM's Regen on Demand system that allows the driver to temporarily regenerate energy through steering-wheel paddles by slowing the car, such as when entering a turn, much like downshifting with a manual transmission. It also gets iBooster and Electronic Stability Program customized for hybrid electric vehicle regenerative blended braking.
“The first-ever CT6 is a technological showcase throughout, making it an ideal platform for Cadillac to offer its first plug-in hybrid,” said Cadillac boss Johan de Nysschen. “In the CT6, Cadillac presents a new formula for prestige luxury. The advanced Plug-In Hybrid system is a key addition, providing a combination of exceptional fuel economy, crisp acceleration and strong electric-driving range.”
*Note: regular 2016 Cadillac CT6 pictured
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