Refer to the figure to the right. The 4-way valve has a blocked center spool and three positions. Solenoid B is energized pushing the spool to the left. What direction will the cylinders move: extend (to the right) or retract (to the left)? Which cylinder moves first during this step and why? 2 Sel A Sel B

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Question

Refer to the figure. The 4-way
valve has a blocked center spool and three
positions. Solenoid B is energized pushing
the spool to the left.
What direction will the cylinders move:
extend (to the right) or retract (to the left)?
Which cylinder moves first during this step
and why?

### 4-Way Valve Operation and Cylinder Movement

**Instruction:**
Refer to the figure provided. The 4-way valve has a blocked center spool and three positions. Solenoid B is energized, pushing the spool to the left.

**Question:**
1. What direction will the cylinders move: extend (to the right) or retract (to the left)?
2. Which cylinder moves first during this step and why?

**Diagram Explanation:**

- The diagram shows two cylinders, labeled 1 and 2, connected to the hydraulic circuit controlled by a 4-way valve with three positions.
- The valve acts as a directional control, with solenoids labeled Sol A and Sol B.
- The spool position changes the direction of hydraulic fluid flow to the cylinders.

**Cylinder Movement:**

- **Direction:** When Solenoid B is energized, the spool shifts to the left, directing the hydraulic fluid to retract the cylinders (move to the left).
- **Sequence:** The first cylinder to move is likely the one with the lower load or friction resistance, allowing it to retract before the other. This depends on specific system parameters such as applied pressure and load conditions shown on gauges in the system.

Understanding this mechanism helps in predicting cylinder actions and troubleshooting hydraulic systems efficiently.
Transcribed Image Text:### 4-Way Valve Operation and Cylinder Movement **Instruction:** Refer to the figure provided. The 4-way valve has a blocked center spool and three positions. Solenoid B is energized, pushing the spool to the left. **Question:** 1. What direction will the cylinders move: extend (to the right) or retract (to the left)? 2. Which cylinder moves first during this step and why? **Diagram Explanation:** - The diagram shows two cylinders, labeled 1 and 2, connected to the hydraulic circuit controlled by a 4-way valve with three positions. - The valve acts as a directional control, with solenoids labeled Sol A and Sol B. - The spool position changes the direction of hydraulic fluid flow to the cylinders. **Cylinder Movement:** - **Direction:** When Solenoid B is energized, the spool shifts to the left, directing the hydraulic fluid to retract the cylinders (move to the left). - **Sequence:** The first cylinder to move is likely the one with the lower load or friction resistance, allowing it to retract before the other. This depends on specific system parameters such as applied pressure and load conditions shown on gauges in the system. Understanding this mechanism helps in predicting cylinder actions and troubleshooting hydraulic systems efficiently.
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when the solenoid B is energized the cylinder 1 retract to the left and cylinder 2 extend to the right.

 

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