公开(公告)号：US12018460B2

公开(公告)日：2024-06-25

申请号：US17448407

申请日：2021-09-22

申请人： SUMITOMO CONSTRUCTION MACHINERY CO., LTD.

发明人： Kiminori Sano ,  Ryuji Shiratani

IPC分类号： E02F9/22 ,  E02F9/20

CPC分类号： E02F9/2246 ,  E02F9/2296 ,  E02F9/2029

摘要： An excavator may include a lower traveling body; an upper turning body pivotally installed to the lower traveling body; an engine installed in the upper turning body; a main pump driven by the engine; and a processor and a memory that stores program instructions causing the processor to control a flow rate of hydraulic oil discharged by the main pump. The program instructions can cause the processor to, when a load of the engine increases, delay a response of the main pump 14 until an actual torque of the engine rises up to a level corresponding to the load of the engine.