|Unit Name||Hydraulics and Pneumatics|
|Unit Duration||1 Semester|
Bachelor of Science (Engineering)
Duration 3 years
|Unit Creator||Dr. Milind Siddhpura|
Total Course Credit Points 81 (27 x 3)
|Mode of Delivery||Online or on-campus.|
|Unit Workload||(Total student workload including “contact hours” = 10 hours per week; 5 hours per week for 24 week delivery)
Pre-recordings / Lecture – 1.5 hours
Tutorial – 1.5 hours
Guided labs / Group work / Assessments – 2 hours
Personal Study recommended – 5 hours
Unit Description and General Aims
The objective in presenting this unit is to provide students with a comprehensive overview of all aspects related to the construction, design, operation, and maintenance of hydraulic and pneumatic systems.
The subject matter covered in this unit will include: the concepts related to pressure and flow; the operation of hydraulic and pneumatic system components – such as actuators and control valves; simple circuits for hydraulic and pneumatic applications; the characteristics of hydraulic oil and air; proportional and servo technology in regard to electro-hydraulic systems; and, troubleshooting procedures.
At the conclusion of this unit, students will have been imparted with the requisite knowledge and skills to design simple hydraulic and pneumatic circuits and to systematically troubleshoot system faults and undertake corrective measures.
On successful completion of this Unit, students are expected to be able to:
- Explain the concepts related to pressure and flow.
Bloom's Level 2
- Illustrate the operation of hydraulic and pneumatic system components such as actuators and control valves.
Bloom's Level 2
- Develop simple circuits for hydraulic and pneumatic applications.
Bloom's Level 6
- Examine, in detail, the characteristics of hydraulic oil and air.
Bloom's Level 4
- Compare proportional and servo technology in regard to electro-hydraulic systems.
Bloom's Level 4
- Design and troubleshoot hydraulic and pneumatic systems.
Bloom's Level 6
(% of total unit marks)
Learning Outcomes Assessed (Topics covered)
Type: Weekly Quizzes
Description: Students will need to complete multiple-choice quiz questions to demonstrate a good understanding of the fundamental concepts.
Type: Test (Invigilated)
Description: Students will need to answer some short and/or long answer questions and/or solve some numerical problems.
After Topic 5
1, 2, 4 (Topics 1-5)
Type: Practical (Report)
Description: Students will need to complete this practical project using a software.
After Topic 9
3, 5, 6 (Topics 1-9)
Type: Exam (Invigilated)
Description: An examination with a mix of theoretical short/detailed answer questions and some numerical problems.
Tutorial Attendance & Participation
Overall requirements: Students must achieve a result of 40% or above in the exam itself to pass the exam, and must pass the exam to be able to pass the unit. An overall final unit score of 50% or above must be achieved to pass the unit assessment.
Prescribed and Recommended Readings
- Practical Hydraulic & Pneumatic Systems: Operations and Troubleshooting, IDC Technologies, Perth
- Parr, A, 2013, Hydraulics and Pneumatics: A Technician’s and Engineer’s Guide, revised edn, Butterworth-Heinemann, ISBN-13: 978-0080966748. Online version available at: http://app.knovel.com/web/toc.v/cid:kpHPATEG01/viewerType:toc/root_slug:hydraulics-pneumatics-2
- Peer-reviewed Journals
- Knovel library: http://app.knovel.com
- IDC Technologies
- Other material advised during the lectures
Introduction to Energy
Pressure and Flow Concepts
1. Definition and units of pressure measurement
2. Pascal's law and applications
3. Pressure/force relationship
4. Fluid flow/discharge
5. Steady and unsteady flows
6. Bernoulli's principle
7. Laminar and turbulent flows
8. Pressure/flow relationship
9. Fluid properties
1. Classification (single vs. double acting)
2. Cylinder construction and mounting
3. Cylinder cushioning
5. Cylinder design checklist
6. Common cylinder problems
Hydraulic Directional Control Valves
1. Classification and symbols
1. Poppet, Check and Spool valves
2. Directly and indirectly, operated valves
3. Valve actuation methods
4. 2, 3, and 4-way direction control valves
5. Positive and negative overlapping
6. Center conditions
Hydraulic Pressure and Flow Control Valves
1. Relief valve
2. Surge pressure
3. Sequence valves
4. Counterbalance valves
5. Pressure reducing valves
6. Brake valves
7. Unloading valves
8. Flow control valve function and types
Hydraulic Accessories, Hydraulic Fluids
1. Introduction to oil reservoirs, filters, heat exchangers, pipes, hoses
2. Hydraulic fluid characteristics
3. Oil groups, Neutralization number
4. Oil contamination, cleanliness and storage
5. Oil additives
6. Common problems associated with hydraulic oil
Topics 6 and 7
Basic Hydraulic Circuits and Applications
1. Symbols of hydraulic components
2. Basic understanding of hydraulic circuits
3. Types of hydraulic circuits and their illustration
4. Design and application of hydraulic circuits
5. Advantages of hydraulic systems
6. Simulation of hydraulic circuits using relevant software.
1. Proportional solenoid
2. Proportional valve
3. Servo valve
4. Comparison of proportional and servo technology
5. Use of transducers in hydraulic systems
Maintenance and Troubleshooting of Hydraulic Systems
1. Safety and cleanliness in hydraulic systems
2. Preventive maintenance
3. Commissioning procedures and pre-commissioning checks
4. Troubleshooting hydraulic system faults/failures
5. Prevention of pre-mature hydraulic component failures
Pneumatic System Fundamentals
1. Characteristics of air
2. Air generation, preparation, and distribution
3. Characteristics of pneumatic systems
4. Pneumatic symbols
5. Components of pneumatic systems
6. Pneumatic elements – control valves, actuators
Pneumatic Circuit Design, Maintenance and Troubleshooting
1. Pneumatic circuit design
2. Troubleshooting: flow chart analysis of pneumatic circuits
3. Maintenance of pneumatic systems
Case Studies and Unit Review
- Industrial case studies on hydraulic and pneumatic systems
- In the final week students will have an opportunity to review the contents covered so far. Opportunity will be provided for a review of student work and to clarify any outstanding issues. Instructors/facilitators may choose to cover a specialized topic if applicable to that cohort.
- Software: Automation Studio
- Version: 7.0
- Instructions: N/A
- Additional resources or files: https://www.famictech.com/en/Products/Automation-Studio/Educational-Edition