Volvo currently offers plug-in hybrid powertrains in its top models—the XC90 SUV, S90 sedan, and V90.
As the Swedish automaker redesigns its lower-level models, it will add plug-in hybrid options to them as well.
But whereas the current T8 "Twin Engine" powertrain uses a 4-cylinder engine and all-wheel drive, other models will use a downsized setup.
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That powertrain will launch next year, said Mats Andersson, Volvo's Senior Director of Electric Propulsion Systems, at the SAE 2017 Hybrid and Electric Vehicle Technologies Symposium in San Diego.
Plug-in hybrids with this powertrain will be followed in 2019 by all-electric models, as well as a new 48-volt mild-hybrid system, Andersson said.
Volvo 40.2 conceptEnlarge Photo
Whereas the current T8 plug-in hybrid powertrain is intended to match the performance of larger 6- and 8-cylinder engines, the new powertrain will aim to match 4-cylinder and smaller-displacement six-cylinder engines.
The new powertrain's 3-cylinder engine will be teamed with a 7-speed dual-clutch transmission and 55-kilowatt (73 horsepower) electric motor.
A 9.7-kilowatt-hour lithium-ion battery pack will provide an electric range of 50 kilometers (31 miles), Volvo's Andersson said.
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That's likely as measured on the European testing cycle; a comparable U.S. EPA figure would be somewhat lower.
This powertrain will likely be used in a range of cars based on Volvo's new Compact Modular Architecture platform.
The CMA platform will support smaller cars than the large and mid-size models using the SPA platform introduced by the XC90, S90, and V90.
Virtually every Volvo production model will be based on one of these two platforms within a few years.
Volvo hasn't confirmed whether models based on the CMA platform will be sold in the U.S., however.
In 2019, Volvo will also introduce a 48-volt mild-hybrid system for use with both gasoline and diesel engines.
It will use a 10-kw (13.4-hp) electric motor at launch, with plans to upgrade to a 15-kw (20.1-hp) motor later on.
The motors will provide limited assistance to a car's internal-combustion engine, and will draw power from a 0.25-kwh lithium-ion battery.
Also in 2019, Volvo plans to launch the first of what will likely be multiple all-electric production cars, which may use both the CMA and SPA platforms.
Volvo hopes to sell a total of 1 million electrified models—encompassing both plug-in hybrids and battery-electric cars—by 2025, and expects these models to comprise 10 percent of its sales by 2020.