Pneumatics. Reading of pneumatic diagrams

Study of compressed air generation systems, brake systems and air suspension systems.

1. GENERAL CONCEPTS

1.1 Pneumatic outlets numbering
1.2 Relation between pressure and force.
1.3 Braking.
1.4 General components

2. ENERGY SOURCE

2.1 Introduction
2.2 Air compressor
2.3 Air dryer filter
2.4 Air dryer
2.5 Pressure regulator
2.6 Overflow valve
2.7 4-circuits protection valve
2.8 Assembly diagram
2.9 Pressure relief valve
2.10 Air Processing Unit (A.P.U.)
2.11 Compressed air tanks

3. ACTIVATION DEVICES

3.1 Introduction
3.2 Service brake valve
3.3 Hand-brake valve (parking brake)
3.4 Park-release valve
3.5 Park-release emergency valve

4. TRANSMISSION DEVICES

4.1 Introduction
4.2 Simple effect cylinders
4.3 Double-effect cylinders
4.4 Quick exhaust valve
4.5 Relay valve
4.6 Relay emergency valve
4.7 Braking force regulating valve (mechanic suspension)
4.8 Braking force regulating valve (air suspension)
4.9 Trailer control valve

5. CLUTCH SERVO

5.1 Definition
5.2 Operation 6Air suspension

6. AIR SUSPENSION

6.1 Levelling valve
6.2 Raise / lower valve
6.3 Lift axle valve

7. SYMBOLOGY

7.1 Lines, pipes, take overs and tests
7.2 Lines, pipes, taps and mufflers
7.3 Compressors, pumps and supply systems
7.4 Preparation of compressed air, filters, dryers and pressure regulators.
7.5 Preparation of compressed air, draining valves, antifreezers
7.6 Pressure limiting and regulation
7.7 Adaptation, pressure reduction and pneumatic circuits reduction
7.8 Air intake, safety valves
7.9 Service brake activation
7.10 Control valves, parking brake
7.11 Trailer control valves
7.12 Braking regulation depending on the load and correctors
7.13 Reduction proportional valve and levelling valves
7.14 Electropneumatics
7.15 Air tanks and air bellows
7.16 Transmission devices, brake chambers, calipers
7.17 Brake calipers and clutch servos
7.18 Coupling heads
7.19 Measuring and checking devices
7.20 Pressure switches, switches and pressure sensors