Overall vehicle Innovations High-performance engine brake The engine brake developed by Mercedes-Benz significantly reduces the wear on the wheel brake systems and makes a significant contribution to the cost-efficiency of the vehicle. The engine brake is designed as a dual-pulsed decompres- sion brake and provides a high level of brake power. • Each cylinder in the engine has its own engine brake unit. Working/municipal hydraulics (circuit I and circuit II) The working hydraulics allow an implement to be adjusted or a permanent consumer to be supplied.
On the 1-circuit hydraulic system one circuit is available for this, while on the 2-circuit hydraulic system, two independent circuits are available, each with its own fixed displacement pump. This allows adjustment operations to be carried out and a permanent consumer to be supplied simultaneously. On the 2-circuit hydraulic system, the volumetric flow rates can be swapped over via the volume switchover function or added together via flow summation. Fan hydraulics with variable displacement pump The fan hydraulics are included in the basic scope of all vehicles. • Greater efficiency of fan hydraulics due to variable dis- placement pump and demand-based, separate control of both fans.
Changes compared to the hydraulic system of Euro V vehicles: • Fully proportional working hydraulics at connections of cells 1–4 (connections 1-8) • Integrated pressure filter • Control of consumers during adjustment operations via the vehicle joystick (social distribution) with diagonal movement of vehicle joystick. Due to the omission of link motion, two adjustment operations can be carried out simultaneously. Example: Raise front loader and tilt shovel simultaneously • Hydraulic connection possibility on valve block (e.g. for roll stabilization) • Electrical interface for actuation of hydraulic valve block (circuit I) e.g.
for external actuation of front and/or rear power lift • Joystick with rocker switch for forward/reverse shifting of manual vehicle transmission Tilting hydraulics based on fan hydraulics The tilting hydraulics allow the vehicle tilt cylinder to be ad- justed and can be extended to allow the adjustment of exter- nal consumers (e.g. rail guide or auxiliary rear axle steering) (but not permanent consumers). • Simple tilting hydraulics for the vehicle tilt cylinder (code HE1) • Tilting hydraulics with additional connection option for ex- ternal adjustment operations (code HE2) e.g. trailer with tilt system.
10 Introduction of the New Unimog Generation | Model Series 405 – This printout will not be recorded by the update service. Status: 03 / 2013 –