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Certain Basic Foreign Used Excavators That are PopularTags: used mini diggers for sale used excavators for sale in europe2013-12-20
During the booming of used excavator, the foreign excavators are still the preference of most people. The features of durability, good quality with advanced technology make the foreign excavators superior to domestic excavators, even in the used excavators market. As a matter of fact, the foreign excavators have many advantages that are worthy of us learning. First, the hydraulic system of a foreign excavator adopts load-sensing system or negative control system. It is obvious that the load-sensing system has many advantages, such as controlling several executive components with different loading pressures at the same time, keeping their speed and accuracy, etc. Otherwise, the negative control system has the features of good stability, quick response, reliability and good maintainability.
Most of the foreign excavators adopt electronic energy conservation and microcomputer control system that are all researched and developed by themselves. For instance, a Japanese company adopts AMS control system that is able to integrate simple operation and reaching top performance under all kinds of conditions. This system has several power modes, and it can make different responses through observing hydraulic requirements in according with the movement of control stick and operating requirements, making engine power comfort to the hydraulic power and activate power lift and automatic low speed function of the engine.
The foreign excavators are equipped with cabs with FOPS and ROPS which possess adjustable elastic chairs and acoustic measures to lessen noise. And some of the cabs even install air conditioners. In addition, the cab is full sealed and has noise reduction treatment. This kind of safe and environment friendly cab uses chairs designed in according with ergonomics. Together with 360 degree adjustments, control handles with integrated functions, full-automatic gear as well as system of failure self-diagnosis, foreign excavators aims to improve the working condition of the drivers as well as the working performance. In order to meet national requirements, the foreign excavators design excavators with energy saving and environmental protection, especially the excavators of used Sumitomo excavators and used Volvo excavators. Foreign excavator enterprises pay more attention to the aspects of lowering engine discharge, improving the efficiency of hydraulic system and reducing the vibration and noises.
The development of diesel engine applies direct injection technology, cancels the traditional mechanical speed governor and timing gear and simplifies the structure of diesel engine. In the used excavator market, the foreign excavators gain dominant position because of their good quality, long service time, fewer accident add, decreasing a lot of money each year for users.
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