Excessive heat pump for two reasons: First, the mechanical friction and heat. Since moving surfaces in dry or semi-dry friction state friction, friction between the moving parts of the heat. The second is a liquid friction and heat. High pressure oil leak to the low pressure chamber through a variety of gap, a large number of hydraulic energy into heat energy loss. Therefore, the correct choice of the gap between moving parts, fuel tank capacity and coolers, can put an end to excessive heat pumps and high oil temperature phenomenon. In addition, the quality of the electric pump, return oil back to the oil filter blockage caused by back pressure is too high, the electric pump, the pump can cause overheating and high oil temperature. Total stroke reciprocating plunger piston L is constant, the electric pump agency, the decision by the cam lift. Plunger fuel supply amount per cycle depends on the size of the fuel supply stroke, stroke oil from camshaft is variable. Oil supply start time does not change with the stroke change. Rotation of the plunger end time can change the oil, thereby changing the amount of oil. When the piston pump work, the fuel injection pump plunger spring action of the cam on the camshaft, the force on the plunger and lower reciprocating motion, thus completing the task of pumping, pumping process can be divided into three stages. Hydraulic Lu (Figure) | electric pumps | electric pumps supplied by Lu hydraulic equipment plant in Texas. Texas Lu force hydraulic machinery plant (www.luliyeya.com) located in Dezhou City, Shandong Province, seven West Industrial Park. Scraps and development in the wave of market economy, the current Lu hydraulic force has a high profile in the hydraulic machinery and parts, and enjoy a good reputation. Hydraulic Lu made the whole network business alliance certification, marking our service and management level has reached a new height. Lu Hydraulic staff willing to work with all people of insight and common development, for a better future.