luni, 27 septembrie 2010

25. I am tired. I want , just, to ride my bike

Hello,
Because i come to an end (relatively) i want to share more from my experience. First of all, for those who want to create their own EFI, it is not a simple job to do. You need to know , at least, the base of electronics, mechanics, programming controllers and computers. You have to be organized , self motivated and your own teacher. You can find all the information you need on the internet. Also you need 500$ and time.
I want to take a break because i am a little bit tired of this. I come to a point when i have to test the bike each day with different settings. I managed to start the engine when it is cold but because i do not have an O2 sensor it is hard to see if the bike runs lean or reach. I can ride it, but sometimes the engine stops because the mixture it is to reach or to lean (depending of rpm, battery voltage, pressure etc...).For example i've been trying to start my bike for 2 days with different settings for mixture and the problem was the spark plug - brand new spark plugs .... so, i have to replace the spark plugs and start over from the beginning (with the settings).
For those who want to try some schematics i want to share some of my work.

Stable +5V and +12V:
From SuzukiGS500EFI_blog13


Pickup the Variable Reluctance Sensor signal. All the values are tested and works with the VR Sensors from Suzuki GS500 (1991).
From SuzukiGS500EFI_blog13

How to send the signal to the injectors:
From SuzukiGS500EFI_blog13



How to control the sparks with the PIC!




sâmbătă, 4 septembrie 2010

24. The first Suzuki GS500 E - EFI (electronic fuel injection)

Hello, I am very happy to write this post. Finally i can ride my motorcycle.


duminică, 15 august 2010

23. Version 2.1 almost done

This picture was removed by a ugly bug from picasa!

sâmbătă, 31 iulie 2010

joi, 29 iulie 2010

21. Going fast to "Home made EFI Version 2.1"

I need to fix some bugs:

1. keep the schematics simple
1.1. remove the ignition management module because it is very complicate to make all the things work and it is more simple to figure out where are the problems.
1.2. remove the stepper motor controller module (because i use a servo motor instead)
1.3. remove any other unused module (relays, leds, connectors, etc...)

2. isolate or change the metallic box because the rain it is a problem

3. replace all the connectors and solder the wires on the pcb to avoid any problem with connectors.

4. increase the clock tick interrupt from 1/4us to 1/8us (or 1/16us)

In the following pictures you can spot some issues. The rain cause a short circuit and the pcb was damaged in some points.



From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11





The three places where the pcb was damaged in the version2:

From SuzukiGS500EFI_blog11

From SuzukiGS500EFI_blog11



The "salt like" substance from the rain:

From SuzukiGS500EFI_blog11


From SuzukiGS500EFI_blog11


20. "Home made EFI Version 2" schematics


From SuzukiGS500EFI_blog10

marți, 20 iulie 2010

19. EFI it is working

The engine starts not very easy. Now the problems are:
1. the adjustments for the injector time table
2. the problems with the rain!
3. the big problem it is the lack of time!
video