513 replies to this topic

[Baron Von Scubadaddy]

ArticMonkey, on 09 Jul 2016 - 9:25 PM, said:

 

chris_uk, on 09 Jul 2016 - 7:33 PM, said:

All the wiring done, all the plumbing done.. Just ran the test procedure and everything is working splended.

At least clean the gauge holder..

 

 

And about 1.1.5 degs off in reference to horizontal line of the cockpit in the background....

Im guessing the dirt has come from an oily rag that came from a pocket Fred Dibnah style !!!!

 

Keep up the good work Chris and the rest of you guys 

one day we will have these stupid cars running as they should with the right engines and bolt on goodies

 

Edited by Baron Von Scubadaddy, 17 July 2016 - 06:41 PM.

[ufods]

chris_uk, on 17 Jul 2016 - 6:19 PM, said:

are you going to modify the sc/manifold gasket then? 

Modification is not needed

[CHILL Gone DUTCH]

Has anyone thought of target AFR based on 100% water 50/50 wmi ?

[chris_uk]

Yup.

[CHILL Gone DUTCH]

CHILL Gone DUTCH, on 18 Jul 2016 - 11:53 AM, said:

Has anyone thought of target AFR based on 100% water 50/50 wmi ?

 

 

chris_uk, on 18 Jul 2016 - 12:17 PM, said:

Yup.

 

Re-phrase my question 

has anyone thought about target AFR and willing to share information 

[siztenboots]

Do you have control over the fuel injection phase, relative to inlet cam opening. Is the WI just one continuous mist and have you measured the amount in cc?

[ufods]

100% Water i would not adjust the afr

 

50/50 afr should be adjusted to leaner - the higher rpm the leaner ( only  until obd tuner Pro is released )

[ufods]

...of course afr will be not as constant

[CHILL Gone DUTCH]

siztenboots, on 18 Jul 2016 - 1:43 PM, said:

Do you have control over the fuel injection phase, relative to inlet cam opening. Is the WI just one continuous mist and have you measured the amount in cc?

 

water injection will be from the injector duty cycle short term and as things progress there will be more control using ecu, boost pressure rev and temp control 

Edited by CHILL Gone DUTCH, 18 July 2016 - 03:24 PM.

[chris_uk]

CHILL Gone DUTCH, on 18 Jul 2016 - 1:12 PM, said:

CHILL Gone DUTCH, on 18 Jul 2016 - 11:53 AM, said:

Has anyone thought of target AFR based on 100% water 50/50 wmi ?

   

chris_uk, on 18 Jul 2016 - 12:17 PM, said:

Yup.

  Re-phrase my question  has anyone thought about target AFR and willing to share information 

Never said i wasnt willing to share.. I just answered your question. But if you want to know my afr target isnt going to change from what it was before WI.

[Mattias]

CHILL Gone DUTCH, on 18 Jul 2016 - 11:53 AM, said:

Has anyone thought of target AFR based on 100% water 50/50 wmi ?

 

For 100% water it depends on how much water you inject, at some point the liquid to air ratio will be to great causing studder/misfire. So if you were using fuel for cooling before, lets say as rich as 0,7 lambda and add water to that you would probably wan't to reduce fuel to at least 0,86 lambda. Here you would want an EGT sensor to keep track, so if you are at peak 950C before WI thats where you want to be with WI also. But also ignition timing comes in to play here, when adding water you reduce the combustion burn rate moving peak cylinder pressure later in the cycle so if ignition is left as is you will loose torque so the ignition should be advanced for the same boost pressure in the region of approx 3-5deg. Here knock is your limit just as with no WI, also the EGT will drop while advancing ignition so it is possible to lean fuel further.

 

Doing this will mean more power but it's here the risks comes in to play if the water stops injecting for some reason and if there is no failsafe implemented like dual maps or boost limiter set below where you normally start injecting water, you could end up with severe knock that could cause damage.

[CHILL Gone DUTCH]

Mattias, on 28 Jul 2016 - 07:31 AM, said:

CHILL Gone DUTCH, on 18 Jul 2016 - 11:53 AM, said:

Has anyone thought of target AFR based on 100% water 50/50 wmi ?

  For 100% water it depends on how much water you inject, at some point the liquid to air ratio will be to great causing studder/misfire. So if you were using fuel for cooling before, lets say as rich as 0,7 lambda and add water to that you would probably wan't to reduce fuel to at least 0,86 lambda. Here you would want an EGT sensor to keep track, so if you are at peak 950C before WI thats where you want to be with WI also. But also ignition timing comes in to play here, when adding water you reduce the combustion burn rate moving peak cylinder pressure later in the cycle so if ignition is left as is you will loose torque so the ignition should be advanced for the same boost pressure in the region of approx 3-5deg. Here knock is your limit just as with no WI, also the EGT will drop while advancing ignition so it is possible to lean fuel further.   Doing this will mean more power but it's here the risks comes in to play if the water stops injecting for some reason and if there is no failsafe implemented like dual maps or boost limiter set below where you normally start injecting water, you could end up with severe knock that could cause damage.

Thanks for the information Will pro ceed with care

[Mattias]

Here is a flow sensor that I use to trigger dual maps, this is the only way I could think of that protects from most possible fail causes.

http://www.gemssenso...ies-Flow-Sensor

 

I think this is the same as used by AEM in their flow gauge kit.

[CHILL Gone DUTCH]

well im going to be getting things moving on this soon 

but it appears some others are also moving along with this 

 

https://youtu.be/4maAOfdf97o

 

just spotted this on u tube 

[smiley]

The owner is indeed a tinkerer.

You will love his car. Has one of the original german coops. Looks very lush.

 

edit: here he is:

http://www.speedster...-sk-3xx/&page=1

 

Edited by smiley, 27 August 2016 - 06:25 PM.

[CHILL Gone DUTCH]

Yeah if I ever went coupe I would go for one like that

[Co220]

Took my manifd to the engineer who ported my B207 head. He gave me two things to take into account: - use more then one nozzle to get a good distribution of the injected water. - make sure there is enough 'space' to get a good mixture of the air and injecter water. Before the laminovas will not have the best cooling effect.But injecting after the laminovas seemed to be a too big risk for him. So I will go for the option of 2 nozzels on top of the manifold. Just like the picture on this post. But am not sure if I will have the time for it this winter

[Exmantaa]

Co, I would take a good look to the few people on here who actually did this with good/very good results...

[Acidpopstar]

Hi, that would be me Sent from my iPhone using Tapatalk

[CHILL Gone DUTCH]

The high powered 2.4 project also has his injection after the laminovas