Exam Question
Explain the working principles of a Swash Plate Pump and a Hele-Shaw Pump. Compare their construction, operation, and efficiency. Discuss their applications in marine systems, highlighting their advantages and limitations (16)
Class 2 (2nd Engineer)
MEKG
📅 Feb 2025
Reference Answer
### **1. Swash Plate Pump (Axial Piston Pump)**
#### **Concept & Working Principle**
The Swash Plate pump is a type of axial piston, positive displacement pump. Its fundamental principle is the conversion of the prime mover's rotary motion into the reciprocating (axial) motion of multiple pistons. This is achieved by causing the pistons to follow the surface of an inclined, non-rotating swash plate.
- **Rotation**: The prime mover rotates a drive shaft, which is splined to a cylinder block (or barrel). The cylinder block contains a number of pistons arranged in a circular pattern, parallel to the axis of rotation.
#### **Concept & Working Principle**
The Swash Plate pump is a type of axial piston, positive displacement pump. Its fundamental principle is the conversion of the prime mover's rotary motion into the reciprocating (axial) motion of multiple pistons. This is achieved by causing the pistons to follow the surface of an inclined, non-rotating swash plate.
- **Rotation**: The prime mover rotates a drive shaft, which is splined to a cylinder block (or barrel). The cylinder block contains a number of pistons arranged in a circular pattern, parallel to the axis of rotation.
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