Water doping: Rover Montego TD 2L

Edits and changes to engines, experiences, findings and ideas.
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Lietseu
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by Lietseu » 20/06/08, 00:47

elephant wrote:Having had the same car, I confirm, the normal consumption is around 8 liters, maybe 7,5 while being careful on vacation.

Bravo for this achievement

For comparison my vectra 2 liters of 80 CV (the same power therefore, but from 1998 is 6,5 liters,


Hi and well done for your achievement Jime, said guys on a modern engine like the TDCI from Ford which already consumes very little, we could do miracles!

especially since it seems to me to have read André that the more the turbo had a flat (flat) operating range the more the reduction in consumption would be important ... is that in any case you all notice a very serious fall of the polution (which for me is essential)


Alas, I can never mount it myself.

Congratulations again to jime and good luck to all!
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by jime » 20/06/08, 12:14

Andre wrote:Hello

Do not think that if we pass more water than the outlet temperature of the reactor will decrease.

I have trouble expressing myself, that's what I noticed, when I increase the water flow from 0,2 to 0,9L / h of water, the t ° c at the outlet of reactor increases, however a flow of 0,9L / h corresponds to a use of the car between 90km / h and 130km / h see a little more, but when I am stopped or when I drive at 50km / h I then have too much water in the gvi and not enough heat, which must harm the production of steam, since I obtain my best results with a flow rate of 0,3L / h

Andre wrote:What are you doing to increase your steam flow from the GV?
(it is not by increasing the drip that you can get out more, you only increase the level in the GV not sharp the steam flow, no more to play on the level with a float system.

Andre

I think my gvi is big enough, 130cm long, for tubes of 20/22 and 26/28, on the other hand it is quite far from the collector (it would be rather its weakness)

so two solutions are available to me, either find an average flow that suits all speeds or manage the arrival on the road with a solenoid valve

Lietseu wrote:Congratulations again to jime and good luck to all!

good thanks 8)
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by Other » 20/06/08, 16:10

Hello
I think my gvi is big enough, 130cm long, for tubes of 20/22 and 26/28, on the other hand it is quite far from the collector (it would be rather its weakness)

so two solutions are available to me, either find an average flow that suits all speeds or manage the arrival on the road with a solenoid valve


There are more than 2 solutions.
What is needed is to supply water according to the power requested, either the exhaust heat or the depression in the intake ect. When I walked with minicarburetor, the engine took the amount of water according to the engine suction .. but this had drawbacks at low revs. then injection with turbo air, this also has the disadvantage at low revs, but all these systems are partially self-regulating
What is important is to send water into the GV without the level starting to rise too high, if too much water accumulates it is because the GV is not able to treated more, pass a certain level, it is more able to take over, you will walk drowned.
You keep a bottom of water for low speeds 60kmh and you inject it in a measured way for walking in power regime

(Look at the photos above I have a manual button to inject water with a window washer pump, in addition to the automatic system, it is an experimental assembly so that I study the need for water at low speed, before doing an automatic control, you need to know the needs and what to base yourself to do the control.
Once properly adjusted the consumption at 60kmh or a100kmh is almost identical, before at 60kmh I consumed more diesel than at 110kmh ..


Andre
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by jime » 02/07/08, 22:50

Hello

I just traveled 815km with 43L of go and 3,5L of fleet, or 5,3L / 100 of go, I had the reserve drawn to the maximum !! I am in the 30% savings if I compare with the 7,5 / 100 without mounting.

The 815 km corresponds to ten days of travel, on national and departmental roads, no motorway

Now I cut off the water supply in the villages and switch to slow speed, I inject the water only after acceleration so as not to saturate the gvi with water at very low speeds (30-50km / h) and it seems to succeed me!

To compare, my boss told me that golf courses in the 90s consumed 55L of go for 800 / 850km, no mistake possible, my car actually consumes less.
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by Other » 04/07/08, 04:59

Hello
Now I cut off the water supply in the villages and switch to slow speed, I inject the water only after acceleration so as not to saturate the gvi with water at very low speeds (30-50km / h) and it seems to succeed me
!


30% is excellent, it remains to make it repetitive, is at low speeds.
With a little practice you will learn to control water at low speed
first of all it is not the instantaneous speed which predominates in the control but the temperature.

When you have just climbed a slope, and you release on the descent you can leave the water flow for a while, then you cut, when you accelerate to go up the other slope you have to wait until the heat rises before to send the water. you have to learn to anticipate inertia

In our assemblies there is the maximum water that the GV can take and the maximum water that the reactor can take, and the maximum water that the engine can take (a 20% water / diesel in our assemblies are common values, but it is preferable to have a GV and a reactor sized to treat a 30% without drowning, in our assemblies it is interesting to be able to operate the system at low speed
It all depends on the construction and location in the exhaust of our assemblies.
Andre
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by jime » 04/07/08, 13:53

Hello andré

what penalizes me in my assembly, it is that it is quite far from the collector, therefore I work with less water, for the moment 10% water / go, finally it is my constraint

With a little practice you will learn to control water at low speed
first of all it is not the instantaneous speed which predominates in the control but the temperature.

I work on it, I try to manage the reactor heat inertia as best as possible to cut or feed the water supply, so as not to drown it at low speed and to return the water once he is hot
I continue to note the results, for the end of the year I will have the average consumption summer-winter
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by jime » 21/07/08, 23:08

Hi everybody

here are two interesting new results

465km traveled on road and expressway for 24L of go and 1,5L of water, ie 5,16L / 100 of go and 0,3L / 100 of water, my new best result !!

and 772km on road and motorway as well as in town traveled with 41L of go and 2,4L of water or 5,36L / 100 and 0,3L / 100 of water (I drove one way in the middle after noon so high temperature on the highway and the return was made at night cool with the headlights)
I had already done this course two months ago with 6,05L / 100 of go for 0,9L / 100 of water

on these 2 routes I consumed less water than previously, 0,3L / 100 instead of 0,4L, as I drove on expressway and highway, the hourly average is higher so I consume less water that during my tests at low speed, I checked that the drip is not obstructed
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by Flytox » 21/07/08, 23:31

hello jime

Your drip, its flow is it influenced by the height of water in the tank?
Is it easy to reproduce a flow setting or is it a bit random?
Do you end up with bubbles in the pipes and if you have bubbles, how do you purge them? : Mrgreen:
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by jime » 21/07/08, 23:43

hi flytox

Your drip, its flow is it influenced by the height of water in the tank?

I do not think, or so little, the tank is 5L, on the last test I consumed as much water water on the outward journey as on the return, I left with the full tank, and I have consumed 1,2L on the outward and return journey, otherwise I frequently look at the water level and I did not notice that I consumed less water when there is only one liter left in the tank

Is it easy to reproduce a flow setting or is it a bit random?

at first it was random, I counted roughly the number of drops per second, now I measure after each change, I let the water run 1 / 4h in a tank and I measure the amount of water with a syringe, finally it requires a little manipulation but with practice I get out faster

Do you end up with bubbles in the pipes and if you have bubbles, how do you purge them?

automatic purge, it is done all alone, example I disconnect the water supply at the entrance of the gvi to control the flow of the drip, so I have a big bubble in the pipe, I reconnect, I roll 1 / 4d'h and the air bubble has passed through the gvi, the supply pipe is again full of water
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by Flytox » 22/07/08, 19:14

hello jime
jime wrote:automatic purge, it is done all alone, example I disconnect the water supply at the entrance of the gvi to control the flow of the drip, so I have a big bubble in the pipe, I reconnect, I roll 1 / 4d'h and the air bubble has passed through the gvi, the supply pipe is again full of water

The setting requires a little preparation but it is self-draining.
My system with pipes (inside diameter 4 mm) is a bit long to go to the float flow meter, and despite the bubble separator I manage to have bubbles from time to time which mess me up ... reading the flow completely distorted and operation ... different :frown:
The purge is done manually by putting the water flow to the bottom just a few seconds (about 1.6 liters / hour) ... at the risk of drowning the reactor on each trip : Mrgreen: How big is the inside diameter of your perf tube?
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