This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Las nuevas excavadoras sobre cadenas Liebherr optimizan la energía

The new engine and hydraulic control are the hallmarks of the generation 6 Advanced

The new Liebherr crawler excavators optimize energy

Drafting Interempresas09/05/2011

May 9, 2011

Markets excavator crawler class 20 - 30 tons is characterized by intense competition. The project of innovation 'Generation 6 crawler excavators' began to be successful in these markets. The result is the bulldozers crawler generation 6 Advanced R906, R916 and R926. These excavators represent the efficiency of the corporate group as a systems manufacturer Liebherr . The core elements of the technique of the system of these vehicles are the Liebherr engine and the new hydraulic control Positive Control of two circuits, which provides rapid, sensitive and without significant influences of consumers between Yes, the necessary flow for the excavator and optimum use of energy.

The Advanced 6 generation of crawler excavators has R906, R916 and R926 models.

The new hydraulic system of Liebherr crawler excavators is characterized, inter alia, that the flow of pumps is predetermined by the previous regulation signal and therefore satisfies the requirements of the user. In addition, through a separation of the two circuits of pumps can supplied to different consumers different pressures independently load and energy saving. At the same time, the sum of the circuits of bombs achieves maximum speeds in individual movements.

Operator this means a precise, delicate, labour movements as the pump is not influenced by variations in the pressure load. Sensitive control offers a natural and harmonious development of movements of working with information in response to the operator. At the same time, something characteristic of the new technique of Liebherr crawler excavators systems are modular electronic components (teachers, I/o units, keyboards, remote control and display elements) and the central systems and applications software in 'compact flash card'.

Software

The development of control software for the generation 6 crawler excavator is done by means of 'rapid Control prototyping', i.e. the control software is configured in the development phase directly on the basis of trials. This technique allows a check of the control software in a simulation environment and, in a later step, the checking and adaptation directly in the real system. The optimized control software becomes the final code through processes certificates for technical security controls. There are in the process integrated testing device that allows the verification of the software without excavator. In this way can be high flexibility with secure software.

Comfort for the operator

The new range of excavators has given special importance to the ergonomics of the cabin.

Another additional essential component of the new technique of excavators Liebherr systems is the job of the operator. In the new generation of crawler excavators was granted a special value to a modern operator workplace, ergonomic, intuitive machine man interface. This includes high standards of security, such as fitness certified Rops, and a screen (touch) color with video capability. The high comfort of management was achieved through an intuitive user menus on screen guide. Menus can trigger is and be selected by means of a rotary push button or directly with the touch screen function. The modern position of the operator and the characteristics of drive system allow the operator to high performance of working with a low physical load

Reduction of consumption

The new technique of systems for excavators, which expands the hydraulic system through an approach based on intelligent control that is represented in the software, enables significant increases in the productivity of the machine. To the same conditions of use is achieved a 20% lower specific fuel (l).