P Flashcards
What is the function of the variable voltage applied to the electromagnetic coil in the system?
Controls the oil flow to the VRD motor
The variable voltage adjusts the flow based on operational needs.
What does the magnetic field from the coil do in the hydraulic system?
Acts on the armature and plunger to open the poppet valve
This action is against the spring force.
What is the role of the DPS2 valve in the hydraulic system?
Senses the difference in pressure before and after the flow control poppet
Maintains an 80 PSI pressure drop.
How does the DPS2 valve maintain a consistent flow rate across the poppet valve?
Adjusts the variable orifice size based on motor load
This ensures flow rate remains steady despite changes in load.
What is the pressure drop maintained by the DPS2 valve?
80 PSI
This drop is crucial for consistent flow control.
What is the significance of the variable orifice in the hydraulic system?
Controls the flow between the valve inlet and the poppet valve
This adjustment is based on pressure readings.
Fill in the blank: The oil flow to the _______ motor is controlled by a variable voltage.
[VRD]
VRD stands for Variable Rate Drive.
True or False: The poppet valve opens when the magnetic field from the coil acts on the armature and plunger.
True
This action is essential for oil flow to the motor.
What are the two pressures referred to in the context of the variable orifice?
Pressure 1 and Pressure 2
Pressure 1 is before the poppet valve; Pressure 2 is after.
What happens to the oil once the poppet valve is opened?
Oil flows across the opening of the poppet valve to the motor
This flow is essential for motor operation.
What does the system do when there is a change in motor load?
The DPS2 valve adjusts the variable orifice size
This allows the system to maintain a consistent flow rate.
