Ottawa Truck says it's the first to sell terminal tractors powered by Cummins Tier 4i (Interim) diesel engines that meet new U.S. Environmental Protection Agency emissions standards.

The engine uses cooled exhaust gas recirculation, a common rail fuel system, and a catalytic converter for exhaust after-treatment technology to reduce emissions to new national standards governing off-road engines in the 75-173 horsepower range.

The Cummins compact catalyst means no diesel particulate filter or diesel exhaust fluid are required.

"We will begin installing the new Tier 4i Cummins engines in off-road tractors in June, providing our customers with a product that will reduce particulate matter and nitrous oxide emissions and help them do their part in improving our natural environment," says David Wood, director of Terminal Tractors North America for Cargotec USA, the Ottawa Truck parent company.

While the new EPA regulations could boost the cost of a typical yard truck by 10 percent, the new engines represent a steady transition to "greener" technology. The company already has orders from dealers for more than 250 of the cleaner terminal tractors.

Ottawa also offers the Ford 6.8-liter V10 gasoline engine and the Cummins ISL G natural-gas engine.

The company also has a new website,
, which features a Google Maps-based dealer locator. Users can download truck sales literature and specifications and maintenance and operator manuals; tap into social media tools; and learn more about Ottawa Trucks' products, technologies and services.