Fuel Injector and Ignition Coil Tester (FIIT)

Abstract

This Project is for testing the Fuel injectors, Ignition Coils and the spark plugs which are the most common reasons of the knocking of the cars. The fuel injectors will test the fuel levels emitted by each injector in the chamber. The ignition coil tester will test the resistance and current of the ignition coil. Spark plug tester will test the resistance of the spark plug. This project is aimed to develop a device that will address the needs of testing coil on plug (ignition coils), spark plugs and fuel injectors. The literacy rate of local mechanics of Pakistan is very low. They are unable to use the diagnostic tools like automotive scope, WYZE and Paddle probes, Pico scope, SNAPON etc. because no one can operate these tools without proper training. So this device will meet the needs of local mechanics and also create mass know how about automotive technology at national level. The project is implemented using PIC16F877, 555 timer IC along with N type Mosfet for driving the fuel injectors and the resistance divider method for measuring resistance and the current on primary side of the ignition coil on pins enabled with ADC. It will observe the loaded and unloaded conditions for the ignition coil on the basis of which it will decide the working of ignition coil is functional or faulty.