POWER MATCHING SYSTEM FOR ELECTRONIC CONTROL ENGINE AND VARIABLE CAPACITY HYDRAULIC PUMP AND THE METHOD THEREOF

摘要

Disclosed in the present invention is a power matching system for an electronic control engine and a variable capacity hydraulic pump. The system comprises an electronic control engine (11); an engine controller (12) for measuring actual rotating speed of the electronic control engine; a master controller (13) for comparing the actual rotating speed with acquired target rotating speed, if the actual rotating speed is smaller than the target rotating speed and the difference between the target rotating speed and the actual rotating speed is larger than a set threshold value, suitable fine adjustment current is output to a proportional solenoid (14) according to the difference; the proportional solenoid (14), the opening of which is increased according to the received fine adjustment current; and a variable capacity hydraulic pump (15) which runs under the effect of power of the electronic control engine. The system increases the rotating speed of the electronic control engine by means of reducing load of the electronic control engine, reduces oil consumption for adjusting the rotating speed of the electronic control engine via the engine controller (12) and simultaneously makes the variable capacity hydraulic pump (15) stably run at the optimal power point of the electronic control engine. Also disclosed in the present invention is a method corresponding to the system.