Introduce to my Citroen ZX, engine, stock ECU, schema

From DIY contraptions to sophisticated FreeEMS-specific designs! Plus general hardware development!
Post Reply
User avatar
HotCat
LQFP112 - Up with the play
Posts: 110
Joined: Wed Apr 13, 2011 2:35 am

Introduce to my Citroen ZX, engine, stock ECU, schema

Post by HotCat »

My Chinese version Citroen ZX, 8 valve 1.6 L gasoline
Image

Under my engine hood
Image

VR sensor
Image

Fly wheel
Image

MAP
Image

16 Ohm low impedance injector
Image

TPS
Image

IAT
Image

Stock ECU, Bosch MP 5.2
Image

Main controller, only 8 bit
Image

back
Image

Lowside switch chip
Image

It's usage
Image

Ignition transistor
Image

Ignition output layout
Image

The attachments is the external schema of my stock ECU, my objective is to tailor FreeEMS to compatible with the stock socket. There's a high resolution version uploaded on sendspace.
http://www.sendspace.com/file/6icv99

My tailoring work on puma board was allmost completed but not yet doing the layout. I don't know how to use github to fork the main trunk, anyone can provide a tutorial? or I'll upload my whole working directory on sendspace latter on
Attachments
Bosch MP 5.2 schema
Bosch MP 5.2 schema
User avatar
Fred
Moderator
Posts: 15431
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by Fred »

Cool! :-)
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
nitrousnrg
LQFP144 - On Top Of The Game
Posts: 468
Joined: Tue Jun 24, 2008 5:31 pm

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by nitrousnrg »

Nice one!
Marcos
User avatar
Spudmn
LQFP112 - Up with the play
Posts: 232
Joined: Thu Feb 10, 2011 12:27 am
Location: Auckland, NZ

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by Spudmn »

Very Cool.

Welcome on board HotCat.
User avatar
BenFenner
LQFP144 - On Top Of The Game
Posts: 360
Joined: Wed Jul 09, 2008 3:15 pm

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by BenFenner »

16 Ohms sounds like high impedance to me?
User avatar
Fred
Moderator
Posts: 15431
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by Fred »

BenFenner wrote:16 Ohms sounds like high impedance to me?
Typo from 1.6? Otherwise, yes, you're right. Good spotting.

Fred.
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
User avatar
HotCat
LQFP112 - Up with the play
Posts: 110
Joined: Wed Apr 13, 2011 2:35 am

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by HotCat »

Fred wrote:
BenFenner wrote:16 Ohms sounds like high impedance to me?
Typo from 1.6? Otherwise, yes, you're right. Good spotting.

Fred.
Yeah, It's my mistake. High impedance means I don't need chip 1949 and darlington NPN to drive my injector. I've tested my injector, the saturation current is only 1A. All I need is a MOSEFT which can interface to I/O pin directly
User avatar
Fred
Moderator
Posts: 15431
Joined: Tue Jan 15, 2008 2:31 pm
Location: Home sweet home!
Contact:

Re: Introduce to my Citroen ZX, engine, stock ECU, schema

Post by Fred »

HotCat, be careful, most normal MOSFET can't be reliably driven with the tiny current the cpu can provide. For ordinary ones, you need a driver chip. Look for logic level FETs such as the VNP10N07 or similar. Don't use PIP3104, they're junk, I found out the hard way...
DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!
Post Reply