Doosan’s DX140W-5 and DX190W-5 are final Tier 4 excavators that feature improved fuel efficiency from a new smart power control (SPC) selectable engine mode and multiple product enhancements. The “dash-5” excavators replace the “dash-3” (interim Tier 4) models.

The 132 net hp DX140W-5 and 168 net hp DX190W-5 wheel excavators have rubber tires, ideal for driving on finished concrete or asphalt surfaces. Doosan wheel excavators are often used in highway/street development, building, manufacturing operations, site development, and land improvement.

The Doosan DX140W-5 and DX190W-5 wheel excavators comply with Tier 4 emission standards. Both models are fitted with Doosan DL06 diesel engines and aftertreatment technologies and do not require a diesel particulate filter (DPF). The engines are optimized for use with a high-pressure common-rail fuel delivery system and a cooled exhaust gas recirculation (CEGR) system. They use a diesel oxidation catalyst (DOC) to reduce particulate matter and selective catalyst reduction (SCR) aftertreatment to reduce nitrogen oxides. Additionally, a variety of aftertreatment systems have been implemented as part of the Tier 4 compliance, such as diesel exhaust fluid, which is used with SCR technology.

A new selectable feature, SPC engine mode, is standard on the DX140W-5 and DX190W-5. SPC consists of two systems — variable speed control and pump torque control — that work together to improve machine efficiency while maintaining productivity and reducing fuel consumption. The engine control unit automatically manages SPC when SPC is engaged. Each of the four power modes will function with SPC engaged or disengaged; however, SPC can be active only in the digging work mode.

Variable speed control reduces engine rpm during low workload requirements such as during the swing portion of a dig cycle. This reduces the total energy required to perform a task and improves fuel efficiency by up to 3-7%.

Pump torque control matches hydraulic pump torque and engine response to the task, preventing engine overload and excess fuel consumption to improve efficiency.

Doosan excavators come with a standard three-year subscription to Doosan Telematics.

Quick Look: Doosan DX140W-5 wheel excavator

Engine: Doosan DL06 Tier 4
Horsepower (net): 132 hp
Operating weight: 33,731 lb.
Max. digging reach (ground): 24 ft. 2 in.
Max. digging depth: 14 ft. 8 in.
Max. dump height: 19 ft. 4 in.
Bucket digging force: 20,349 lbf.
Arm digging force: 17,064 lbf.

Quick Look: Doosan DX190W-5 wheel excavator

Engine: Doosan DL06 Tier 4
Horsepower (net): 168 hp
Operating weight: 43,431 lb.
Max. digging reach (ground): 29 ft. 8 in.
Max. digging depth: 18 ft. 9 in.
Max. dump height: 22 ft. 2 in.
Bucket digging force: 26,676 lbf.
Arm digging force: 20,944 lbf.