Study On The Multiple Power Match Of Wheel Loader In Typical Cycle

Energy consumption redution is one of the inevitable trend of the wheel loader. A lot of research work had been carried out in different development stages to reduce the energy consumption and to improve work efficiency. In mechanical engine stage, a series of methods, such as optimizing the match of torque converter and engine, improving the torque converter efficient, reducing engine speed and so on, were adopted to reduce energy consumption. In electronic-controlled engine stage, a new way of reducing energy consumption was provided for the engineering technician. The high-power could be chosen in verloaded conditions, the small power could be chosen in light load condition, as the electronic control engine can provide multiple independent characteristic curve.Thus the energy consumption could be effectively reduced. The technology had been applied in driving with indoor power switch selector according to different conditions in some foreign wheel loader. The driver could select different power in the operations.This subject focuses on the study of typical work cycles in different stages of engine power needs, and evaluates the comprehensive performance of wheel loader in the full power part throttle and full throttle part power and gives reasonable power of full throttle part power and specific application of the solution.The engine power demand at different stages of the typical work cycle were calculated. The mathematical model of torque converter and engine working together was built by some advanced general calculation tools. The torque converter and engine matching condition were studied in full power at part throttle and part power at full throttle state. The performance of acceleration time, distance and the fuel consumption was evaluted based on the data from five tons wheel loader.With the application of electronic-controlled engine becomes more widespread, there will be more study on the application of multiple power match of wheel loader.