Rail pressure precontrol

Posts related to specific vehicles, or any other general tuning info.

Re: Rail pressure precontrol

Postby Nicowico » Sat Aug 18, 2012 8:13 pm

Note, what Ecuedit tells you, because he knows all about EDC15 map and pre control valve, but he don't give it for free to you but let you discover by yourself by giving some "hints" :)

Nicowico
Bronze
 
Posts: 38
Joined: Sun Apr 08, 2012 4:52 pm
Location: Holland

Re: Rail pressure precontrol

Postby Alex.T » Sat Aug 18, 2012 8:35 pm

Well I'd say limiters have to be as close as possible to desired maximum pressure.
I don't understand if these svrp limiters actually limit pressure requests (so you can't ask for more) or maybe they limit the PID based on how high measured pressure gets...
SVRPL 5 is higher than the others.. I'm really struggling to understand why are there more than one or two RVRPLs..

User avatar
Alex.T
Gold
 
Posts: 173
Joined: Sat May 26, 2012 3:26 pm
Location: Milan, Italy

Re: Rail pressure precontrol

Postby ecuedit » Sat Aug 18, 2012 11:12 pm

Nicowico wrote:Note, what Ecuedit tells you, because he knows all about EDC15 map and pre control valve, but he don't give it for free to you but let you discover by yourself by giving some "hints" :)


:D

User avatar
ecuedit
CARPRO
 
Posts: 2221
Joined: Fri Feb 24, 2012 10:10 pm
Location: European Union

Re: Rail pressure precontrol

Postby Alex.T » Mon Aug 20, 2012 10:45 am

I like hints ;) It's like give a man a fish and he'll eat for a day, teach him how to fish and he'll eat forever..

Back to topic, I think SVRPL 5 (the higher one) is something like a deviation limiter. Am I right?

User avatar
Alex.T
Gold
 
Posts: 173
Joined: Sat May 26, 2012 3:26 pm
Location: Milan, Italy

Re: Rail pressure precontrol

Postby ecuedit » Mon Aug 20, 2012 2:39 pm

There is another deviation map that tells how much tolerance can be before leak map is entered and valve closed to 80%.
It is a difference in achieved pressure and desired pressure vs time unit.

This limiter you are talking about works different. You already experienced how this limiter works :lol:

User avatar
ecuedit
CARPRO
 
Posts: 2221
Joined: Fri Feb 24, 2012 10:10 pm
Location: European Union

Re: Rail pressure precontrol

Postby Alex.T » Mon Aug 20, 2012 2:57 pm

Ok, so SVRPL 5 is basically the maximum allowed rail pressure, above that it shuts down the engine, right?

I'll search for deviation map, even if I don't know what kind of graph to expect.. maybe a simple 8x8..

User avatar
Alex.T
Gold
 
Posts: 173
Joined: Sat May 26, 2012 3:26 pm
Location: Milan, Italy

Re: Rail pressure precontrol

Postby ecuedit » Mon Aug 20, 2012 3:08 pm

Correct. Limiter is safety one, because your sensor would "burn" after 1500bar...

User avatar
ecuedit
CARPRO
 
Posts: 2221
Joined: Fri Feb 24, 2012 10:10 pm
Location: European Union

Re: Rail pressure precontrol

Postby Alex.T » Tue Aug 21, 2012 1:13 pm

ecuedit wrote:There is another deviation map that tells how much tolerance can be before leak map is entered and valve closed to 80%. It is a difference in achieved pressure and desired pressure vs time unit.

So:
X = [measured pressure] - [desired pressure]
Y = [time]
Z = [% of max. deviation]
OR
Z = [max. deviation in Bar]
:?:

User avatar
Alex.T
Gold
 
Posts: 173
Joined: Sat May 26, 2012 3:26 pm
Location: Milan, Italy

Re: Rail pressure precontrol

Postby ecuedit » Mon Sep 17, 2012 1:35 pm

And here are the pictures how to fix it mechanically :lol: if electromagnetic is OK.
You do not have permissions to view the files yet. You have to be registered and you have to make at least 3 quality / unique posts.

User avatar
ecuedit
CARPRO
 
Posts: 2221
Joined: Fri Feb 24, 2012 10:10 pm
Location: European Union

Re: Rail pressure precontrol

Postby ALVK_DE » Thu Oct 16, 2014 12:49 am

do you mean that you need to clean the mesh and replace worn seals? to the valve is bypassed and kept the pressure right?

ALVK_DE
Bronze
 
Posts: 38
Joined: Fri Jun 20, 2014 12:43 am
Location: Russia Moscow

PreviousNext

Return to General tuning

Who is online

Users browsing this forum: No registered users and 1 guest

cron