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Doosan introduces new DL420CVT-7 wheel loader

Doosan has launched the new DL420CVT-7 Stage V compliant wheel loader equipped with a Continuously Variable Transmission (CVT).

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Doosan introduces new DL420CVT-7 wheel loader

Part of the company’s award-winning DL-7 series, the Doosan DL420CVT-7 wheel loader has a a maximum bucket capacity of 4.5 m3 and is intended to meet a wide range of materials handling needs from loading and transporting granular material (such as sand or gravel) to quarrying, mining, construction, demolition, industrial, waste and recycling applications.


A CVT transmission is the result of a permanent combination of a hydraulic technology and a mechanical technology, which provides a smooth and continuous speed variation. The CVT design combines the benefits of a hydraulic mechanical transmission and a hydrostatic transmission in the same machine. It allows the DL420CVT-7 to automatically transition from hydrostatic power at low speed to the mechanical system to operate at higher speeds.


By combining the two types of transmission, the CVT technology ensures high loads can be carried at low engine speeds with high dynamics for an optimum wheel loader operating cycle. The DL420CVT-7, therefore, provides an increase in machine performance for operators working in digging, loading and lifting applications.


For most tasks, operators will utilise the hydrostatic part of the transmission, which offers greater fuel efficiency in low-speed applications. The combination of the two transmissions is automatic and fully transparent for the operator.


The complete driving range, forwards and in reverse, is controlled by the CVT system. Low engine speeds ensure high efficiency and the highest driving comfort irrespective of the traction speed. The power splitting continuously variable technology facilitates moving off softly and hydraulically. Furthermore, with the CVT, a fuel saving of up to15% can be achieved, according to Doosan.

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