Automobile accelerator equipment of the prime mover of hydraulic construction machine and control device of prime mover and hydraulic pump

摘要

In the present invention, the computation unit 700d2 or 700d4 computes the correction gain (KAC or KTR) by the operation pilot pressure in the operation of the arm crowd or the running, and calculates the correction amount KAC or KTR based on the KAC or KTR (KACH or KTRH) by the operation pilot pressure is calculated in the operation unit 700m or 700p and the upward correction amount DNH based on the KACH or KTRH is calculated in the operation units 700q to 700s , And the reference target rotation speed NR0 is corrected by the DND and DNH. In the operation other than the arm crowd or running, the target rotation speed NR0 is corrected by the reduction correction amount DND by only the correction gain by the operation pilot pressure. Accordingly, when the load on the actuator increases, the number of revolutions of the engine in accordance with the variation of the load of the actuator can be controlled by the operation of increasing the engine speed. In other operations, It becomes possible to control the number of revolutions.