Recently, China National Heavy Duty Truck Qingdao Heavy Industry Technology Center successfully developed a new 3~5m3 mixer electric control open hydraulic system, which can effectively improve the reliability of the vehicle and reduce fuel consumption.
This design changed the original hydraulic system design idea, and changed the imported axial piston pump and quantitative motor into double gear pump and cycloidal gear motor, with speed range of 2~18 rpm, torque of 5000Nm, and imported parts. The main parameters are the same, the manufacturing cost is reduced by 60% compared with the original closed hydraulic system, and the dual-gear pump and cycloidal gear motor have lower requirements on the cleanliness of the hydraulic oil, which can effectively improve the reliability of the whole vehicle and also reduce the engine. Power, reducing fuel consumption.
It is reported that the system has been tested and verified in July, and the effect is good. At present, the system enters the development stage of the 6m3 manual open hydraulic system.
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