Haul up to 34 cubic yards of snow with these two Tier 4-compliant machines. Doosan introduces two new articulated dump trucks (ADTs) for the 28-and 40-metric-ton weight class, offering superior performance, improved fuel efficiency, and increased reliability, serviceability and operator comfort. Doosan DA30-5 and DA40-5 ADTs have Tier 4-compliant diesel engines and feature improvements to the driveline, engine and cab for all-around operator ease of use.
The new 365-horsepower DA30-5 and 490-horsepower DA40-5 are powered by fuel-efficient Scania DC9 and DC13 diesel engines, respectively. The trucks have been configured with a high-pressure common-rail (HPCR) fuel delivery system as well as cooled exhaust gas recirculation (CEGR). Tier 4 compliant Doosan ADTs combine selective catalyst reduction (SCR) with a diesel oxidation catalyst (DOC) to reduce engine emission levels. Diesel exhaust fluid (DEF) is used with SCR technology and is stored in a DEF tank on the truck. The DOC transforms particulate matter (PM) emissions into harmless water and carbon dioxide. DEF is injected into the exhaust system to transform the nitrogen oxides (NOx) produced during combustion into water and nitrogen.
New to the DA30-5 and DA40-5 is a mass airflow sensor and exhaust brake, working in tandem to reduce emissions. The mass airflow sensor allows the electronic control unit to improve the management of airflow provided by the variable geometry turbocharger, and to optimize fuel delivery to the combustion chamber based on air intake volume and rpm. The exhaust brake helps to maintain consistent engine temperatures at lower engine speeds to improve operating efficiency. Consistent engine temperatures reduce harmful emission levels in the exhaust when the engine is running at lower rpms. Under normal operation, with high rpms, the exhaust brake is inactive.
Doosan. www.doosanequipment.com
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