Title :
Design and application of hydrodynamic efficiency control system for high-power bulldozer with hydro-mechanical transmission
Author :
Wei, Wei ; Yu Tao ; Yan Qingdong
Author_Institution :
Nat. Key Lab. of Vehicular Transm., Beijing Inst. of Technol., Beijing, China
Abstract :
To avoid excessive temperature rising and low transmission efficiency of high-power bulldozer when it worked in hydrodynamic operation mode during a long time, hydrodynamic efficiency control system (HECS) was designed and implemented for the high-power bulldozer. Non-causality integrated powertrain model including engine, torque converter and shift clutches was built for bulldozer, and control models of load-delay-acting and heavy-load-prejudging were proposed and realized. The heavy-load working condition of high-power bulldozer was simulated with the control aim of hydrodynamic transmission efficiency, as can be derived that torque converter could operate on ideal high-efficiency level by adjusting engine throttle opening and actively reducing external working load, and the high temperature problem may be resolved effectively.
Keywords :
construction equipment; engines; materials handling equipment; power transmission (mechanical); road vehicles; temperature control; torque control; vehicle dynamics; engine throttle; heavy-load-prejudging model; high temperature problem; high-power bulldozer; hydro-mechanical transmission; hydrodynamic efficiency control system; hydrodynamic operation mode; load-delay-acting model; powertrain model; torque converter; Adaptation model; Engines; Hydrodynamics; Land vehicles; Load modeling; Vehicle dynamics;
Conference_Titel :
Modelling, Identification and Control (ICMIC), The 2010 International Conference on
Conference_Location :
Okayama
Print_ISBN :
978-1-4244-8381-5
Electronic_ISBN :
978-0-9555293-3-7
