The dispensing pump is in system's core part (as shown in Figure 4), it is mainly composed of the following four parts:
(1) the transmission feed part (as shown in Figure 5)
The drive shaft leads plane cam drum revolving through ten character shaft couplings, leads plunger revolving again. The plunger spring and the spring holder press the plunger on the cam drum, causes the plunger to make the reciprocal motion during revolving. Thus, in the plunger cavity's diesel oil both are compressed produces the high pressure, and the oil hole assigns through the plunger to the pump body on the corresponding cylinder's oil lead, after the delivery valve, the high-pressure oil pipe and the spray hole gushes in corresponding the cylinder.
(2) modulates velocity the control section (as shown in Figure 6)
On drive shaft's gear leads flies the hammer place and flies hammer revolving, flies hammer's centrifugal force impetus velocity modulation sleeve end motion. Moves on plunger's fuel flow control sleeve after the speed adjusting gear along with the rotational speed change, but about moves, changes its right flank leng side the radial direction unloading hole relative position (as shown in Figure 4) with the plunger on, thus achieves along with the rotational speed change controls the fuel feed change the goal.
(3) rolls the wheel seat and ahead of time (as shown in Figure 7)
Rolls on the wheel seat to be loaded with four hoops, through cylindrical pin and ahead of time piston joint. When in pump body diesel oil pressure variation, promotes ahead of time the movement of plunger, drives the cylindrical pin to cause to roll the wheel seat rotation, the change hoop and the plane cam drum bulge relative position, thus achieves the change feed angle of advance the goal.
(4) the feeding pump and the pressure-regulating valve (as shown in Figure 8)
When the gleitbretter type feeding pump revolves, as a result of rotor and pump housing bias, between gleitbretter's volume change, but pressurizes the diesel oil to 0.6~0.8 MPa, enters the pump body cavity, but the pressure-regulating valve uses for to adjust the diesel oil pressure. When the diesel oil pressure is too high, the accent presses the piston to open the oil discharge mouth, the diesel oil returns oil inlet, causes the drop of pressure. The pressure is higher, the spring reduces the quantity to be bigger, the oil hole opening cross-sectional area is bigger, the oil discharge quantity are more, plays the automatic control oil transfer pressure the role. As a result of pressure-regulating valve's function, the flowing tubing head pressure which the feeding pump produces (i.e. engine speed) increases along with the oil pump rotational speed is proportional the enhancement, thus makes the feed angle of advance along with the rotational speed to enhance, but the linearity enlarges, satisfies the diesel engine highly effective combustion the request.
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