GOLF 3 1,9D: Water doping

Edits and changes to engines, experiences, findings and ideas.
Other
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by Other » 19/03/07, 19:43

Hi Pit

To make your life easier for welding
you open a door width in the exhaust pipe
you make a sheet with the cheese of the pipe so that it straddles the hole from 1 to 1,5 cm you drill the two holes for the entry and the evening of the GV taking care to leave games of expantion to your little ones pipes because mechanically it is they who hold it on this sheet.
It’s the vibration that hardens the copper and makes it break close to a solder,
Then you place your sheet in its hole some tack of the welds
and hammer blows to properly adjust the plaster and weld all around it is better with new sheet metal and overlapping than butt.

Andre
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PITMIX
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by PITMIX » 19/03/07, 22:34

In fact I try something else.
Before reassembling the exhaust I tried to make a copper ring of 53mm in diameter which includes the exhaust over 50mm long.
The water inlet was below and the steam outlet on the side.
It was right at the tube between the reactor and the muffler.
Image
The problem is that brazing copper on steel is not great in terms of tightness and solidity.
And to tell you the truth, I found the result really disgusting.
In addition, the steam and water supply tubes were blocked, I don't know how. Lack of games between the two walls can be ??? or solder sag in the tubes ...
I have straightened everything.
Finally, this is where I tried my reactor used in SG on the bench and I realized that the results are not bad.
You just need to supply the stuff with water.
There is almost no need. Just what it takes to make steam.
If my reactor was tilted at least 45 ° I could use the float at constant level but with 5 ° or 10 ° C tilt I have more interest in using electronics.
A solenoid valve and a small tap on the water supply and a thermostat that regulates the steam outlet.
Just story to make the thing autonomous.
It will drip regulate to avoid too much water.
I noticed that with my small windshield washer pump by sending water Three seconds I keep the steam temperature above 90 ° C for more than 20 seconds.
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PITMIX
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by PITMIX » 18/04/07, 20:57

Hello
I give some small news of my assembly on the VW.
I made a small spot of solder at the end of the rod so that it does not fall into the bottom of the reactor.
The vibrations were not caused by play, but simply because the rod ended up falling down to the bottom corner of the tube.
I also placed a tee with a small valve just after the water injection needle before entering the reactor.
I connect either an air filter or the breather tube.
In this way I can either use fresh air (reactor in depression with venturi), the breather (reactor in overpressure without venturi) or no air to use the reactor as a GV.
So I tried to operate as "mmm" had advised me.
That is to say the breather in place of the fresh air intake.
With a very small injection of water, it gives a slight smoke in the intake.
In this case, the reactor operates in blown air and not in sucked air. The venturi is therefore unnecessary.
I think I remember that Zac and André said that it doesn't work in this scenario.
Yet "mmm" says that's the best way to go on Diesel.
What do you think ?
PS: I don't want to start a controversy, I'm just trying to gather information about your different experiences.

Thank you all.
Last edited by PITMIX the 19 / 04 / 07, 16: 50, 1 edited once.
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PITMIX
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by PITMIX » 19/04/07, 16:24

From what I observed while making this little video there is a high risk of sending water to the engine using the reactor with the breather without air supply.
So I put a tee and an air intake 3 to 4mm in diameter just at the water injection needle. I reinstalled the intake venturi.
Image
There is no longer any danger of sending water into the engine, the breather can breathe through the air intake in the event of overpressure and the reactor is again in depression.
No matter how hard I look, I always come back to this montage. I will leave everything like that.

Oh yes by the way :P I found the EGR valve pilot solenoid valve. It is behind the coolant expansion tank. On TDI it is under the fuel filter.
There is no ECU anyway I did not find it.
By unplugging it as André told me, it will cancel its operation.
Image

I think that I will gradually switch to recovery oil to fuel my car because it is really the best ecological and economical solution.
I hope that with the installation of the reactor as is it will not smell too much of the fries.
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laurent.delaon
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by laurent.delaon » 19/04/07, 17:40

Hello,
you will not necessarily cancel the effect: you must know if it is normally open or normally closed before unplugging.
In addition it is necessary to make sure that the calculator sees nothing otherwise it can be put in degraded mode: and the c not terrible.
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nialabert
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by nialabert » 19/04/07, 18:57

PITMIX wrote:Oh yes by the way :P I found the EGR valve pilot solenoid valve. It is behind the coolant expansion tank. On TDI it is under the fuel filter.
There is no ECU anyway I did not find it.


There must be some electronics down there. Even a CDI box.
I had one in my fuel scooter that is to say.

Where did you watch? In mine (Honda) it is behind the glove box.
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RolCopter
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by RolCopter » 19/04/07, 19:24

Bonjour à tous

Indeed no ECU on your car, the EGR valve is controlled by a vacuum system and is normally closed.

from Pitmix
Ah yes to the fact Razz I found the solenoid valve for piloting the EGR valve. It is behind the coolant expansion tank. On TDI it is under the fuel filter.



I do not see very well how you are connected on your breather?
On my Passat I only take a portion of the recycling, which I can adjust by interposing pressure drops in the circuit.

from Pitmix
There is no longer any danger of sending water into the engine, the breather can breathe through the air intake in the event of overpressure and the reactor is again in depression.
No matter how hard I look, I always come back to this montage. I will leave everything like that.
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zac
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by zac » 19/04/07, 20:55

hi pitmix

I never said it didn't work while blowing; I say that I have NEVER succeeded (despite many attempts) to make a pantone work properly other than in depression.

And until proven otherwise I have never come across either : Evil:

@+
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PITMIX
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by PITMIX » 19/04/07, 21:23

Hello
Ok Zac. So don't bother going into something too difficult to do. I will try to visit mmm in May so that he will show me his achievements. I am sure it will be very informative.
Laurent I did not strip the whole car to find the calculator but by following the pipes and cables I do not come across a black box.
I confirm the connection on the vacuum tube.
I drove like this and there is no fault.

My RolCopter breather can be seen clearly on the video.
I disconnected it from the collector and now the oil vapor passes through the reactor.
I did not put any valve, the vapor is free to follow the flow of air sucking in the reactor or to leave by the small air filter which one sees on the photograph.
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Other
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by Other » 19/04/07, 22:37

Hi Pit
your system is not a pressurization system the breather is in the air with the filter (careful assembly) the reactor draws its air into the filter if the breather pressure rises it is only the restriction of the filter, which will butter oil after a few thousand kms but it is without major problems
according to the internal arrangement of the conduits you can favor the vapors of the crankcase to go in the reactor, I have to operate in this way for some time but directly the breather outlet in the water carburetor, I also try to pressurize the reactor with the turbo air, easy enough to prick a pipe on the manifold after turbo and send it into the nose of the water carburetor
it sends hot air but it must be limited so much air passes that it alone will cool the reactor, no appreciable results with these methods, not tested long enough !!

For the installation of MMM what is most successful is the power supply with an adjustable windscreen washer pump which allows precise control according to the temperature of the reactor and which has advantages on all our systems is to use the reactor intermittently when it lacks heat at low speed, this is the problem I have at 100kmh the same problem for Michelm the engines are too big and we are caught with legal speeds on the road.
the use of the breather is more delicate. On a healthy engine it is feasible but each engine according to its age has different breather outlets, which quickly exceeds what the reactor can swallow, it is necessary to ensure a oil separator so as not to eat the big drops of oil (certain vehycule have centrifugal oil separator) in general two vertical baffles sufficient, the hot gases of the crankcase are interssant, but it is necessary to envisage an exit of rescue in the event of pressurization, as long as the reactor syphone no problem if the reactor is very hot.
Still to prove the difference between free air or breather gas in the reactor if there is a significant difference?
But the window washer pump is an interesting avenue better than a floor valve to control the flow ...

Andre
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