Cadil­lac in­tro­duces ul­tra­ca­pac­i­tors in start-stop setup

Metro Canada (Winnipeg) - - METRO DRIVE -

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.

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