Cadillac introduces ultracapacitors in start-stop setup
Engine start-stop systems are appearing in evermore vehicles as automakers strive to increase fuel economy and cut emissions. Shutting down engines while cars stand still — when there’s no need for power for motion — can help achieve both goals.
Where current start-stop systems rely on battery power to keep electrical accessories running, and to restart the engine at the appropriate time, Cadillac is trying something new: ultracapacitors, which store energy for less time than conventional batteries, but which release their energy in quicker bursts of power said to stabilize electrical flow, reducing high currents and repeated cycling that shortens battery life, notes Green Car Reports.
The new system is standard on base 2016 Cadillac ATS and CTS models.