【正文】
e oil liquid spread hot and filter the condition is order to pensate the leakiness in the system, usually need a small discharge to repair the oil pump and fuel the oil a size of a function of high bar discharge not etc., will make power make use of descend in work process, so the performance ponent within the shut type system presses the motor for the liquid generally.2)According to system the liquid presses the number of the pump, can is divided into the list pump system, double pump system and pump system more.3)Press the dissimilarity of pump the form with the liquid by, can is divided into the fixed amount pump system and change the quantity pump advantage that changes to measure the pump is to regulate the scope inside, can make use of the power of launch the machine well, but its structure and the manufacturing craft plications, the cost is high, can is divided in to move to change the quantity, control to change the quantity possibly, servo change the quantity, pressure to pensate to change the quantity, press to change the quantity, liquid to press to change to measure various ways of etc..4)Press toward performance the ponent to provide the dissimilarity of the oil method, can is divided in to establish the system and merge the in the sys