EB-562 Electronic Ignition Demonstrator

Innovative Technologies in Education (ITE)

EB-562 Electronic Ignition Demonstrator

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This system is designed to show operation principles of DIS systems. DIS controls the spark timing to achieve optimum engine performance and efficiency under various starting and driving conditions for different water coolant temperature, engine speed, and load. The student is tested on his/her understanding before each experiment, as well as observation questions at the conclusion of each experiment. Faults are inserted through the PUZ-2000 and are interactive with courseware. All measurements are checked for validity and reliability. Students develop skill in the following instrumentation: 20 MHz dual trace oscilloscope, DMM 3½ digits, automotive stroboscope light, and automotive vacuum pump. The EB-562 training system uses an electric motor to rotate an iron disk that triggers a Hall effect "crank sensor". This sensor alternately switches two transformers that simulate ignition coils that are connected to two spark gaps. The ignition timing and dwell are controlled from the information received from the sensors, much in the same way as in a real DIS. An integral high intensity LED lamp serves as a stroboscope to accurately measure dwell angle and ignition advance. The LCD display shows engine RPM, engine coolant temperature and ignition timing in degrees. All relevant signals are brought out to test points, such as: Hall sensor out, knock sensor out, engine speed, and coolant temperature. MAP out, A/D input, primary ignition voltage and current (2), secondary ignition voltage (4) divided by 100 and stroboscope trigger.

Panel components include:

Slotted iron disk driven by DC motor
Crankshaft position sensor

MAP simulator potentiometer
Knock sensor

Ignition coils (2)
Spark gaps (4)

Spark plug firing sequence indicators
Manifold absolute pressure (MAP) sensor

Engine coolant temperature sensor with heating element

The courseware includes experiments in the following categories:

Event and waste sparks
Secondary circuit waveform

Trigger pulse
Measuring ignition timing

Effect of engine speed on ignition
MAP sensors

Effect of engine load on spark timing
Effect of engine temperature on spark timing

Knock control
Troubleshooting the electronic DIS systems and faults in DIS sensors and circuits