Heavy Duty Equipment Technician Red Seal Exam Prep · Question
How does a load-sensing variable displacement piston pump adapt its output to system requirements?
A load-sensing pump controls the angle of its swash plate to vary the displacement of its pistons, thus matching the pump's flow output precisely to the demand
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Question: How does a load-sensing variable displacement piston pump adapt its output to system requirements?
Answer options:
- By modifying the pump drive speed ✅ By changing the angle of the swash plate
- By throttling the pump outlet
- By redirecting excess flow through a bypass valve
Correct answer: By changing the angle of the swash plate
Explanation: A load-sensing pump controls the angle of its swash plate to vary the displacement of its pistons, thus matching the pump's flow output precisely to the demand of the actuators, optimizing efficiency and minimizing heat.
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