feedback

i must admit that i am so pround of being part of this project. it takes us a lot of time and also cost almost $1000. but i have learned so much from doing this project. during the presentation a lecturer asked me what have i achieved from this project. i din't tell him much. but now i can say i have learned how to read a wiring diagram throughly. and i also have learned that how all the wires are wired on a vehicle. it used to be very complicated to me, but now it is so simple and so clear.

also the another thing we have learned is how to program a electronic device. before this i never imaged that it is so simple. we have learned that electromagnetic interference, but before it is just a conpect to me, coz i have never experienced with them. but now i have really had a good touch with it.

presentation day

time goes by so fast and our project also comes to a full stop. we are so excited to present our project to the class. it is the proof of our hard working and knowlege application. when we are doing the presentation we are asked a lot of questions by the lecturers which is not what we expected. may be we are not prepared enough or may be we don't have enough time to explain. but anyway,  we are pround of the project we have done. and it will perform its destiney. this board is gonna used by Unitec to show a student how EFI system works without running the engine.

MAP sensor simuation

A MAP sensor is simply a vacuum gauge connected at the engine’s intake manifold and provides the ECU with engine load information. However, in our project a small DC motor is used to work as an engine to drive the distributor. Without the piston runs down inside a cylinder when the throttle is running at idle or at partly open position, vacuum cannot be produced for the MAP sensor. so a fixed value of 5 volts can only be sent to the ECU which is the atomosphere pressure voltage. so we decided to use a special electronic device to simulate the MAP sensor.

Except the for the PicAxe 08M chip, all the components can be bought as a kit at the price of about $ 10 from Surplustronics. The chip costs another extra $ 4. The kit includes a 22 K resistor, a 10 K resistor, a capacitor, programming unit and also a connector for programming.

without programming this unit is nothing more than a electronic device. this is the first time we acutually get into the touch with programming and it is not hard at all.