MECT06017 2019 Pneumatic / Electro-Pneumatic and Hydraulic Systems Full-Time
This module will give the students an introduction to pneumatic/electro pneumatic and hydraulic systems.It will cover basic pneumatic and hydraulic components and their use in complete systems. The student will also become acquainted with standard pneumatic and hydraulic symbols in accordance with IEC standards and be able to use a software simulation package to draw and simulate practical circuits.
This module will also cover advanced pneumatic and electro pneumatic circuits including sequencing of pneumatic cylinders. The circuits will be build and simulated in software.
Learning Outcomes
On completion of this module the learner will/should be able to;
Describe the components of a compressed air and air treatment system.
Demonstrate an understanding of pneumatic circuit operation, including sequence control.
Apply the cascade method to solve pneumatic sequential problems involving cascade groups and cylinders.
Demonstrate an understanding of basic hydraulic systems.
Design and simulate electro-pneumatic circuits to sequence cylinders.
Employ formulae to calculate flow rate, piston force, system pressure and piston size.
Teaching and Learning Strategies
Content will be delivered through lectures and practicals.
Module Assessment Strategies
Continuous assessment via weekly laboratory sessions.
Indicative Syllabus
Electro-pneumatics
Use of electrical switches and relays. Latching. Use of electrical timers. Sequencing of pneumatic cylinders to include, A A-, AB A-B- etc. Draw and simulate standard electro-pneumatic circuits using a software package e.g. Fluidsim.
Advanced pneumatics techniques including two group cascade circuits.
Pneumatics
Advanced pneumatics techniques including two group cascade circuits.
Sensors
Proximity switches: inductive, capacitative, magnetic (reed) and optical.
Indicative Practicals/Projects
Demonstration of safe working practices in the workshop. Hazards associated with fluids under pressure, actuators in motion and electricity.
Construction of circuits using cylinders, directional control valves, pressure control valves and flow regulators with electro-pneumatic components such as relays and timers.
Construction of electro-pneumatic sequential circuits involving the use of two cylinders.
Demonstration of basic electro-pneumatic circuits using proximity, limit and pressure switches.
Indicative Practicals/Projects
Demonstration of safe working practices in the workshop. Hazards associated with fluids under pressure, actuators in motion and electricity.
Construction of circuits using cylinders, directional control valves, pressure control valves and flow regulators with electro-pneumatic components such as relays and timers.
Construction of electro-pneumatic sequential circuits involving the use of two cylinders.
Demonstration of basic electro-pneumatic circuits using proximity, limit and pressure switches.
Electro-pneumatics
Use of electrical switches and relays. Latching. Use of electrical timers. Sequencing of pneumatic cylinders to include, A A-, AB A-B- etc. Draw and simulate standard electro-pneumatic circuits using a software package e.g. Fluidsim.
Pneumatics:
Compressed air production. Absolute and gauge pressure.
Manipulation of F=PA and Q=VA formulae.
Double and single acting cylinders, directional control valves (3/2 and 5/2), pilot air. Pressure and flow regulators, non-return valves, cylinder speed control.
Pneumatic timers and sequential circuits.
Hydraulics
Pascal’s law, hydraulic power.
Hydraulic fluids, reservoirs and distribution, filters.
Hydraulic pumps and actuators.
Directional, flow and pressure control valves.
Hydraulic circuits including metering, counterbalancing, use of regenerative cylinders, sequencing.
Directional control valves, power units and safety features.
Indicative Practicals/Projects
Demonstration of safe working practices in the laboratory. Hazards associated with fluids under pressure, actuators in motion and electricity.
Construction of circuits using cylinders, directional control valves, flow and pressure control valves, timers.
Construction of two group pneumatic cascade circuits.
Demonstration of commonly encountered basic power hydraulic circuits
e.g. sequence, counterbalance, flow control, regenerative.
Pneumatics:
Compressed air production. Absolute and gauge pressure
Double and single acting cylinders, directional control valves (3/2 and 5/2), pilot air. Pressure and flow regulators, non-return valves, cylinder speed control
Manipulation of F=pA and Q=vA formulae
Pneumatic timers and sequential circuits.
Electro-pneumatics
Control of cylinders using pneumatic and electrical techniques. Cylinder sequencing to include, A-, A+, A+B+, A-B- etc. Draw standard electro-pneumatic circuits using computer software.
Hydraulics and Electro-hydraulics
Hydraulic power, Bernoulli's equation
Hydraulic fluids, reservoirs and distribution, filters
Hydraulic actuators, pumps and motors
Directional, flow and pressure control valves
Accumulators
Hydraulic circuits including metering, counterbalancing, use of regenerative cylinders, quick approach, hydrostatic drive, sequencing and pressure offloading.
Motors, directional control valves, power units and safety features. Design and draw standard hydraulic circuits.
Pneumatics
Construction of circuits using cylinders, directional control valves, pressure control valves, flow regulators, timers. Construction of two group pneumatic cascade circuits.
Electro-pneumatics
Construction of circuits using electro-pneumatic components and relays, electronic timers, lights and alarms. Construction of two group electro-pneumatic cascade circuits.
Hydraulics
Construction of commonly encountered basic power hydraulic circuits.
e.g. sequence, counterbalance, flow control, regenerative, quick-approach.
Electro-hydraulics
Construction of basic hydraulic circuits with electrical control, using proximity, limit and pressure switches.
Coursework & Assessment Breakdown
Coursework Assessment
Title | Type | Form | Percent | Week | Learning Outcomes Assessed | |
---|---|---|---|---|---|---|
1 | Lab Work | Practical | Multiple Choice/Short Answer Test | 40 % | OnGoing | 2,3,5,6 |
End of Semester / Year Assessment
Title | Type | Form | Percent | Week | Learning Outcomes Assessed | |
---|---|---|---|---|---|---|
1 | Final Exam | Final Exam | Closed Book Exam | 60 % | Week 15 | 1,2,3,4 |
Full Time Mode Workload
Type | Location | Description | Hours | Frequency | Avg Workload |
---|---|---|---|---|---|
Lecture | Flat Classroom | Lecture | 2 | Weekly | 2.00 |
Practical / Laboratory | Engineering Laboratory | Lab | 2 | Weekly | 2.00 |
Independent Learning | Not Specified | Independent Learning | 8 | Weekly | 8.00 |
Required & Recommended Book List
Festo TP 101 Festo
Electro-Pneumatics 201 Festo
1998-01 Practical Pneumatics Butterworth-Heinemann
ISBN 0340662190 ISBN-13 9780340662199
Covers properties of air, factory distribution systems, design of components, symbols and circuitry, safety and working procedures, emergency and fail-safe circuits, applications of pneumatics, seals and seal materials, multi-cylinder circuits, hydro-pneumatics, electro- pneumatics, maintenance and fault-finding.
Fundamentals of pneumatic control engineering Festo