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Volvo Construction Equipment’s EPA-certified Volvo D11, Volvo D13 and Volvo D16 Tier 4i engines with V-ACT (Volvo-Advanced Combustion Technology) are built with ultra high pressure variable fuel injection systems, super efficient cooled exhaust gas recirculation (EGR), precise variable-geometry turbo (VGT) turbocharger controls, a powerful new engine management system (EMS), and an integrated exhaust after treatment system, equipped with a particulate filter and thermal regenerator. When fully integrated with the rest of the Volvo powertrain, these engines offer advantages in construction equipment operations. The results from engineering achievements have been increased combustion efficiency, engine response and performance, power capacity, and the required emissions reductions.