VEMS Community Forum

Technical => Fuel Injection => Topic started by: Jamo on January 26, 2010, 01:52:38 AM

Title: RC Injector Rampup?
Post by: Jamo on January 26, 2010, 01:52:38 AM
Hi,

I've recently installed VEMS on 1.1.65 into my S2 Avant ABY, I would like some help getting the injector modelling into the ecu as I don't understand the rampup settings at the moment. It's currently set at 192

RC have supplied some details on my injector latency times for my 750cc injectors.

10v  1.36ms
11   1.12
12   0.92
13   0.76
14   0.63
15   0.50

If anybody could help me please
Title: Re: RC Injector Rampup?
Post by: [email protected] on January 26, 2010, 02:52:00 AM
Well injopen is the open time at 13.2V - so you'd be as well to use 760 for that.
As for the battery dependent factors its all guess work in all honesty
Title: Re: RC Injector Rampup?
Post by: Jamo on January 26, 2010, 02:53:31 AM
Cheers Rob
Title: Re: RC Injector Rampup?
Post by: Sprocket on January 26, 2010, 03:53:06 AM
I posted the method I used to determine the injector modeling settings. Whether it was right is any mans guess, as there is not any sensible documentation. Hope you can make use of it. It certainly did not give me any problems.

http://195.159.109.134/vemsuk/forum/index.php/topic,661.msg7053.html#msg7053
Title: Re: RC Injector Rampup?
Post by: Jamo on January 26, 2010, 06:31:38 AM
Quote from: Sprocket on January 26, 2010, 03:53:06 AM
I posted the method I used to determine the injector modeling settings. Whether it was right is any mans guess, as there is not any sensible documentation. Hope you can make use of it. It certainly did not give me any problems.

http://195.159.109.134/vemsuk/forum/index.php/topic,661.msg7053.html#msg7053

Can't quite follow is below correct?

RC Injectors

10v  1.36ms
11   1.12
12   0.92
13   0.76
14   0.63
15   0.50

768 / 0.78 = 985

Injector rampup = 985?
Title: Re: RC Injector Rampup?
Post by: GintsK on January 26, 2010, 06:18:16 PM
I  use both rampup values =0 on all my installs.
Instead I use inj open time @13.2V (about 730 in your case)
and battfact. You can start with about 600 and then experiment with voltage.

My method to determine opening time is just sweep Lambda table values at idle. When opening time is right, ego correction stays same no matter lambda is 0.80 or 1.05.
Title: Re: RC Injector Rampup?
Post by: Jamo on January 26, 2010, 07:49:02 PM
So like this?

(http://img.photobucket.com/albums/0603/JamoDodger/VEMS/2010-01-26_134215.jpg)
Title: Re: RC Injector Rampup?
Post by: GintsK on January 26, 2010, 09:40:37 PM
Yes.
Title: Re: RC Injector Rampup?
Post by: Jamo on January 26, 2010, 09:44:31 PM
Cheers I will give it a go tonight  ;D