Powered by a Scania SCR diesel engine meeting the Stage IIIB EU emissions regulations, the DL450-3 is said to combine high engine power output with a new ZF transmission to minimise fuel consumption and boost performance.
With a bucket capacity of 4.5 m3, the DL450-3 large wheel loader is intended to meet a wide range of material-handling needs from loading and transporting granular material (such as sand and gravel) to industrial, mining and quarrying applications.
Maximum power output from the 13-litre Scania DC13 SCR 6-cylinder diesel engine is 264kW at 1800 rpm.
There are three engine working modes: Eco, Normal and Power, to adapt the machine to different applications, with different engine speeds and gear steps according to the working mode engaged.
There is also an auto idle mode that the operator can select to cut out the engine when it is not in action to save fuel.
All new generation Doosan large wheel loaders are equipped with load-sensing controlled, variable hydraulic piston pumps, improving performance and reducing fuel consumption. With load sensing, the hydraulic pumps receive a signal from the MCV informing how much oil is needed. This helps to save on engine performance, Doosan says.
With the clutch cut-off system engaged, the driver is able to disconnect the transmission from the engine by operating the brake pedal, to have 100% engine performance for the hydraulic system. Doosan says that this speeds movements, maximises breakout force and reduces fuel consumption.
The DL450-3 and all other new generation Doosan large wheel loaders are equipped with a torque-converter-cut-off (TCCO) system which, when activated, is switched on automatically. This provides a direct mechanical connection between the engine and transmission without loss of power and torque by the torque converter. Tests show that fuel consumption is up to 10% lower with increased traction compared with conventional systems, Doosan says. In contrast to the drive systems on other machines, the TCCO can be engaged even in 2nd to 5th gear, not just in the highest gear. This makes the TCCO more efficient.
The new cab design has a wider front glass section and an extended wiper blade area, an improved hand rail and steps, and a new instrument panel with integrated vehicle control unit (VCU).
The Grammer seats are vertically as well as horizontally air suspended. Relocating the reservoir for the wiper water to the outside of the cab gives more legroom inside, and a cooling compartment to keep your sandwiches fresh now comes as standard.
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