The 32,783-pound DX140LC-5, along with the shorter tail swing DX140LCR-5, has selectable Smart Power Control (SPC), which uses Variable Speed Control and Pump Torque Control to improve machine efficiency. The engine control unit manages SPC by reducing engine rpm during low workload requirements and matching hydraulic pump torque and engine response to the task, Doosan says. The 113-horsepower Tier 4 engine uses a high-pressure common-rail (HP/CR) fuel-delivery system and CEGR, DOC and SCR aftertreatment. Maximum digging depth is 20 feet 1 inch.
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