Since 2012, Kalmar Ottawa has produced more than 1,500 trucks that conform to EPA’s Tier 4 Interim (Tier 4i) emissions requirements, exceeding the agency’s production mandate. The company is now aiming to be the first North American terminal tractor manufacturer to bring a Tier 4 Final truck to market in 2015.
Kalmar Ottawa terminal tractors that meet the standard are equipped with Cummins QSB6.7 engines. Tier 4i-compliant trucks put 90% less particulate matter and 45 percent less nitrous oxide (NOx) into the air than those equipped with engines meeting EPA’s phased-out Tier 3 standard. Kalmar Ottawa trucks that meet the Tier 4 Final requirements will cut NOx emissions by 90% compared to Tier 3 engines, the company stated.
The Cummins QSB6.7 engines, specifically designed to meet the Tier 4i emissions standard also deliver improved fuel economy, Kalmar Ottawa noted. A Tier 4i truck in its lineup, for example, uses three percent less fuel than one equipped with a Tier 3 engine, and similar savings are projected for those equipped with Tier 4 Final engines.