Volvo CE last week announced that the HUSS MK system has received final approval from California for Volvo Tier 3 IEGR-equipped machines in that state.

In late 2008, Volvo Construction Equipment entered into a strategic partnership with HUSS LLC to provide retrofit systems for Volvo construction equipment designed to significantly reduce exhaust emissions. The HUSS MK system now has final approval from California for Volvo Tier 3 IEGR-equipped machines in that state.

The HUSS MK system, approved for use on Volvo engines utilizing V-ACT technology with internal exhaust gas recirculation, meets California’s CARB Level 3+ requirements. Volvo equipment owners can utilize the system to help comply with the “In-Use Off-Road Diesel Vehicle Regulation,” or to provide the best available control technology for the newest machines in owners’ fleets. Previously, engines using any type of EGR had been excluded from applying exhaust retrofit technology in California. This has now changed with the recent system verification by the state.

The HUSS retrofit system for Volvo equipment is capable of collecting up to 99 percent of diesel particulate matter emissions, substantially exceeding the California CARB requirements.

The retrofit system is equipped with a HUSS Control Unit that constantly monitors filter function to precisely control diesel PM loading and regeneration. This is an active filter regeneration system, accomplished through an integrated fuel burner system. Regeneration typically takes place after approximately eight to 10 operating hours and is completed during breaks or shift change in five to 35 minutes with no external support needed. Engine exhaust backpressure is set to Volvo requirements. In addition to the reduction of 99 percent PM, there is no increase of NO2 or other secondary emissions. The HUSS technology is adaptable to low- and high-horsepower equipment.

HUSS, LLC, Palm Springs, Calif., is a specialist in exhaust aftertreatment for diesel engines.

The Volvo/HUSS emissions reduction retrofit system may be installed on all Volvo equipment in customer fleets and in addition to improving the environment, customers using the system may be able to realize thousands of dollars in savings by keeping machines in their current fleets and avoiding the costly process of total engine replacement.