Volvo Construction Equipment has received Tier-4 interim emissions certification from the Environmental Protection Agency for its Volvo D13 (13 liter) and Volvo D16 (16 liter) engines, the company said. EPA certification for Volvo’s D11 (11 liter) engine was received in August.

Implementation of Tier-4 interim emissions regulations begins Jan. 1 for engines in the 175-750 hp range, requiring a 90-percent reduction in diesel particulate matter and a 50-percent reduction in nitrogen oxide.

The EPA-certified units are built with ultra high-pressure variable fuel-injection systems, cooled exhaust gas recirculation, precise variable-geometry turbo turbocharger controls, a new engine management system and an integrated exhaust after treatment system, equipped with a particulate filter and thermal regenerator.

Volvo Construction Equipment North America is based in Asheville, N.C.

Volvo CE received Tier-4 interim emissions certification from the Environmental Protection Agency for its Volvo D13 and Volvo D16 engines. Tier-4 interim certification requires a 90-percent reduction in diesel particulate matter and a 50-percent reduction in nitrogen oxide.