The key technologies of modern tracked bulldozers revolve around energy efficiency, precise control, intelligent environmental protection, and adaptability to complex working conditions, covering multiple aspects such as power transmission, hydraulic systems, and intelligent control.
Regarding energy saving and transmission technology, the hydraulic system of the working device adopts constant differential overflow technology, and the engine, working device hydraulic system, and transmission system employ full power matching technology, utilizing hydrostatic transmission technology. A hydraulic torque converter with lock-up function is used, allowing the output torque to vary with the load, providing strong load adaptability. Hydraulic transmission is used at low speeds, while mechanical transmission is used at high speeds, saving 10%-15% of fuel.
Regarding high-pressure hydraulics and vibration reduction technology, the hydraulic systems of modern tracked bulldozers are typically at high or even ultra-high pressure levels. Hydraulic cylinders are made of medium carbon steel (such as 35# and 45# steel), with compressive strength reaching 150MPa or even higher. Technologies such as "rigid pipeline fixing + dampers" effectively reduce pipeline vibration by up to 80%. Supported by core technologies such as "dual-pump confluence," the system can intelligently allocate hydraulic power according to working conditions.
In terms of intelligent and automated technologies, it integrates GPS positioning, remote control, cluster scheduling, automatic navigation, and unmanned driving technologies to achieve automated operation and intelligent construction. It is equipped with electronic monitoring and fault diagnosis systems. Operator assistance systems (such as Liebherr OAS) provide different levels of support, including "free slope" mode (actively stabilizing the blade), "predefined slope" mode (automatically positioning the blade to create a 2D surface), and an optional "3D slope" mode (GNSS-based terrain modeling control).
Regarding environmental protection and emission technologies, engine emissions must meet Euro I, Euro II, and even China's non-road National IV standards. HVO (hydrogenated vegetable oil) is used as a 100% alternative to diesel fuel to achieve climate-neutral operation. An ECO mode is included to reduce fuel consumption.
In terms of special environment adaptability technologies, for special environments such as plateaus, we adopt power recovery-type booster technology, thermal balance technology, wind and sand prevention technology, configuration of self-rescue and protection equipment and tools, adoption of low temperature preheating systems, and development and application of multi-degree-of-freedom bulldozing devices.
