Load control device for engine of working vehicle

摘要: PROBLEM TO BE SOLVED: To surely prevent engine stop when a high hydraulic pressure load is suddenly applied in working vehicle such as wheel loader. SOLUTION: If an operator operates operation lever for loader rise direction while operating steering handle, torque can not catch up with quick (occurrence of time delay) and actual rotation speed Nr the 1 goes down to threshold Nc or lower. controller judges that detected by detection sensor lower, executes control reducing absorbing variable displacement type pump. Consequently, shifts low line shown Tp2. Since changes Tp2 from Tp1, present gets excess Tp2, returns onto regulation FL C2. COPYRIGHT: (C)2009,JPO&INPIT