Cummins Inc. said that it has submitted all necessary applications to the California Air Resources Board for product testing and verification of two ComfortGuard auxiliary power unit solutions.
Diesel APUs used on large trucks equipped with 2007 or newer diesel engines must be verified by CARB. Battery-powered solutions are not covered by the regulation. Verification became especially important as of Jan. 1 because that’s when a no-idle exemption for resting in the sleeper expired.
Once the company receives formal CARB verification, Cummins ComfortGuard will be available with two options to meet the more stringent emissions criteria:
Cummins ComfortGuard APUs feature a two-cylinder low-emissions diesel engine and either a regenerative DPF or an exhaust adapter kit for use with 2007 Cummins ISX engines. Equipped with a Cummins alternator, the APU produces 4,000 watts at 120 volts and 60 Hz AC. It also produces up to 40 amps at 12 volts DC for charging the truck’s batteries, and for powering lights and fans.
In a related development, Cummins announced availability of Clean Idle Certified on-highway engines meeting CARB’s idle reduction regulation. Cummins’ full lineup of on-highway engines – including the ISX, ISM, ISL, ISC and ISB – meet the new regulation by generating less than 30-g/hour NOx emissions at idle, Cummins says.