Volvo engines earn Tier 4i certification
Volvo Construction Equipment has received Tier 4 interim emissions certification from the Environmental Protection Agency (EPA) for its D11 (11 litre) engine. Implementation of Tier 4i emissions regulations begins January 1, 2011 for engines in the 175-750 hp range. These regulations require a 90 percent reduction in diesel particulate matter (PM) and a 50 percent reduction in nitrogen oxide (NOx).
The new EPA-certified Volvo D11 Tier 4i engine with V-ACT (Volvo-Advanced Combustion Technology) is 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.
“Volvo Construction Equipment is meeting the emission requirements of the new standards by continuing to engineer and develop engines of the highest quality and reliability and with the greatest performance and productivity accomplishments on the market today,” said John Bartz, Director, Product Assurance and Regulation, Volvo Construction Equipment North America, Inc.
When fully integrated with the rest of the Volvo powertrain, these engines offer even greater market-leading advantages in construction equipment operations.
The results from highly-advanced engineering achievements have been increased combustion efficiency, engine response and performance, power capacity, and the required emissions reductions.
Similar emissions regulations have already been enforced in the on-highway truck sector since 2007 and – as one of the world’s largest manufacturers of diesel engines in the 9-18 liter range for both on-road and off-road operation – Volvo has previously developed EPA certified technological solutions for sister companies Volvo Trucks and Volvo Penta. This vast experience – not to mention the millions of hours of real world testing – has proven invaluable in producing off-highway engine systems to comply with the Tier 4i emissions legislation.