Question 186General Subjects - Assistant Engineer70% to pass
A variable displacement pump is fitted with the illustrated device, the discharge flow rate will be reduced as described by which of the following statements? Illustration GS-0040
AI Explanation
The correct answer is B) Part "H" will move to block the replenishing pump oil flow across part "G" as flow across hydraulic motor decreases.
This is correct because in a variable displacement pump, the discharge flow rate is controlled by the angle of the tilting box. As the high-side pressure increases, part "H" will move to restrict the replenishing pump oil flow across part "G", which in turn reduces the flow across the hydraulic motor, causing the discharge flow rate to decrease.
The other options are incorrect because they do not accurately describe the mechanism by which the discharge flow rate is reduced in a variable displacement pump with the illustrated device. Options A, C, and D do not correctly explain how the components of the device work together to control the discharge flow rate.
Related Questions
#184 The baffle plate used in the reservoir of a hydraulic system serves to _______________.#185 One function of a replenishing pump installed in many pressure-closed hydraulic systems is to supply fluid flow to _______________.#187 If the device shown in the illustration is being used to control the output of an axial piston pump, when part "A" is moved to the right, then part "B" _______________. Illustration GS-0039 #188 Which of the following statements will be true if the position of the manual control lever, shown in the illustration, remains unchanged after the pump is placed on stroke? Illustration GS-0039 #189 Compensated flow control or constant flow valves are used in hydraulic systems to _______________.