Drive: Volvo’s new hybrid powertrains
How it works?
We only had one chance to try out the B6 powertrain, but we’re impressed with the results. The XC60 and V90 Cross Country don’t feel much different from before, just a little more polished and polished. An Integrated Starter Generator (ISG) mounted on both engines smooths gear changes, improves the automatic stop and start system, and helps the engine deliver a more linear power curve. The overall result is improved fuel economy and better low-end response, making the XC60 and V90 Cross Country a bit faster around town. EPA estimated city and combined fuel economy ratings are up slightly for the XC60 and V90 Cross Country. That said, Mercedes, BMW, and Audi offer similar 48-volt systems that are more powerful and nearly if not more efficient than Volvo powertrains.
Like other automakers, Volvo’s Stop-and-Start system temporarily stops the engine under certain conditions to improve fuel economy, such as when you are stopped at a traffic light. The new ISG helps make the Volvo system one of the best we’ve seen. Both vehicles also use an electric braking system that uses regenerative braking to help recharge the battery. On the street, the brakes are smooth and uniform.