Ignition and Charging Systems Board
This hands-on learning resource allows students to investigate a variety of starting, charging, and ignition circuits using a range of on-board components. Used in conjunction with our automotive cloud-based learning content, students are set tasks that encourage them to explore circuits practically to help develop their understanding of electrical components, circuits and systems. The resource is also focused on the development of diagnostic and fault-finding skills using real test equipment.
The optional cloud-based learning resources also offer supporting material in the form of presentations, investigations and assessments to underpin the practical tasks carried out.
Practical topics covered include:
- Semiconductor basic principles
- Contact breaker ignition systems
- Electronic ignition systems
- Spark plugs
- Dynamo charging systems
- Alternator charging systems
Typical activities include:
- Recognize the principle of the PN junction.
- Recognize what is meant by the term ‘dwell angle’ and its effect on performance.
- Recognize the operating principle of the ignition coil.
- Make measurements of the resistance and voltage at the coil primary and secondary windings.
- Diagnose faults in the contact breaker ignition system.
- Recognize the operating principle of the transistor assisted contact breaker ignition system.
- Identify the range of sensors required to provide input to the ECU.
- Make measurements with an oscilloscope of an inductive pickup ignition circuit.
- Compare the secondary wave patterns of each cylinder of a multi-cylinder engine.
- Recognize that the dynamo current is rectified through a mechanical commutator.
- Recognize the differences in construction and operating principle between the dynamo and alternator.
- Diagnose faults in the rotor circuit.
The circuit board provides the following features:
- Timing light
- Spark plugs
- Crankshaft and timing pointer
- Coil drivers
- Engine speed control
- Crankshaft position sensor
- Camshaft position sensor
- Electronic ignition control
- Three-phase alternator
Note that this resource requires a 707-01 Autotronics Accessory Pack.