Dieselboy getting his goal with his heavy SUV!

[TimV]

Today. This morning. Temps where 86 degrees celcius. Outside was 17 degrees celcius. It tooked 35 km to get it at 87degrees. Not higher. This afternoon. Temps outside are 25-26 degrees celcius. Its a hot day. A trip of 20km. 89 degrees celcius. No fan on. 30 minutes later. A trip of 40km with a lot of trafic jams. 89 degrees celcius. 5 times the fan went on and dropped temp down to 85 degrees.

[blownoiler]

Originally Posted by TimV

I was looking for water methanol injection, but on this site, nobody seems to have that install on a diesel, so i find nowhere proof if it actiually give a gain in fuel efficency.

There is a lot of info for gaining extra power, but i need a verry small nozle to give a verry low percentage of water/methanol per fuel when i accelerate.
Not a hole lot of water/methanol when you gun the trothle...

Then an other problem, the smallest nozzle i can find is a 50cc nozzle.

I drive 45 minutes to work, that is 40 km. The first 5km is with a cold engine, so no injection.

I P&G, so assume that i inject a bit more then half the time i drive. Make that 30 minutes for 40 km, for easy calculations.

I can drive 1200km on one tank. So injecting 900 minutes.
Smallest nozzle was 50cc, lets say it injects 60cc.

60cc/minute x 900 minutes = 0,06l/minute x 900 minutes = 54 liters.

Thats a hole lot of water, if you compare that i only burn 72 liters of diesel in that time.

So a smaller nozzle is needed or is this a correct volume of water injection?

Is there sombody who can tell me where i can find the info that i aim looking for?

Thanks

Water injection is mostly used on gasoline engines, it allows them to run a higher compression ratio and/or more ignition advance without incurring detonation. It could be used on a diesel engine for economy gains in theory, by allowing more injection advance without the attendant high pressure/temperature spikes, but setting up such a system would require a retune which costs dollars. The addition of methanol/water injection to a diesel can give a boost in power, but the methanol/distilled water costs money so dollar economy goes down mostly.

[blownoiler]

Originally Posted by TimV

Last weekend i went to a nearby country to do something with the car that probably nobody can gues. Teaser vid will be uploaded withing 5 days.

Still waiting for the vid!

I filled the car up before i went to that event.
30l for 511km. That is 5,87l/100km

That's great economy , my 93 TD uses close to double that amount of fuel, but I don't drive for economy

[TimV]

@ blownoiler. I figuerd also out that the gains in milages probably are consumed by water and meth. So no further avtions in that direction.

I aim having some computerproblems for making that video. The files are superheavy. 20 seconds of video is like 1Gb of data...

Latest fill up is 5,3l/100km . 2 years ago. I drove also with 10l/100km :S

[TimV]

Alright. I filled up this morning. And like i tought about the previous fill up. That one was 2l short.

So together it is 2514km with 138.83l. Gives an average of 5.51l/100km. A brand new record

[blownoiler]

Originally Posted by TimV

Alright. I filled up this morning. And like i tought about the previous fill up. That one was 2l short.

So together it is 2514km with 138.83l. Gives an average of 5.51l/100km. A brand new record

That's great economy TimV, I don't think that I could drive gently enough to make any substantial economy improvements, Well done!

[DieselMe]

Originally Posted by blownoiler

Water injection is mostly used on gasoline engines, it allows them to run a higher compression ratio and/or more ignition advance without incurring detonation. It could be used on a diesel engine for economy gains in theory, by allowing more injection advance without the attendant high pressure/temperature spikes, but setting up such a system would require a retune which costs dollars. The addition of methanol/water injection to a diesel can give a boost in power, but the methanol/distilled water costs money so dollar economy goes down mostly.

This is not strictly true. You do not need a retune if you add water injection. You can do a pre-spray of a very small nozzle, I recommend 1gph (max 2 gph). then a 3-4gph nozzle after the intercooler. this will bring your intake temps and exhaust temps down (exhaust temps being the most important for a diesel). If you get a progressive kit - Devils own have the cheapest. then you will be able to set the spray progressively. I recommend 8-10psi start and full on max boost. If you add 10% methanol then I have read you will find economy gains (the VW boys love the water injection). This is caused by the water mixing with the hydroscopic methanol and becoming a cooling agent AND a fuel. Methanol also helps complete the diesel burn process.

Please see my post for up coming results:

http://ecomodder.com/forum/showthrea...ing-30238.html

[blownoiler]

Originally Posted by DieselMe

This is not strictly true. You do not need a retune if you add water injection. You can do a pre-spray of a very small nozzle, I recommend 1gph (max 2 gph). then a 3-4gph nozzle after the intercooler. this will bring your intake temps and exhaust temps down (exhaust temps being the most important for a diesel). If you get a progressive kit - Devils own have the cheapest. then you will be able to set the spray progressively. I recommend 8-10psi start and full on max boost. If you add 10% methanol then I have read you will find economy gains (the VW boys love the water injection). This is caused by the water mixing with the hydroscopic methanol and becoming a cooling agent AND a fuel. Methanol also helps complete the diesel burn process.

Please see my post for up coming results:

http://ecomodder.com/forum/showthrea...ing-30238.html

Dude, you have to add in the cost of the methanol to any economy/mileage sums, sure your diesel ($1.50 per litre here) use may go down, but methanol is an expensive fuel to buy, around $6.00 per litre from the local supermarket. Distilled water costs around the same as diesel, and from what I've learned over the years isn't a fuel, but does allow tuning changes to be made that can result in an increase in efficiency. Can you explain how the injected water mist will increase mileage please?

[DieselMe]

Originally Posted by blownoiler

Dude, you have to add in the cost of the methanol to any economy/mileage sums, sure your diesel ($1.50 per litre here) use may go down, but methanol is an expensive fuel to buy, around $6.00 per litre from the local supermarket. Distilled water costs around the same as diesel, and from what I've learned over the years isn't a fuel, but does allow tuning changes to be made that can result in an increase in efficiency. Can you explain how the injected water mist will increase mileage please?

Methanol is $2/L here when I buy 40L (2x 20L drums). Methanol actually mixes with the water and become a fuel in itself. Like you say there is a cost for this, but you only add 10% to your water. Happily my window washer bottle is 5L so I add 500mL and it looks like the it will be 2.5L/tank fuel (~60L tank), so the cost is low. The VW tdi guys are seeing 8-12% fuel savings. But I am yet to prove this, and 'yes' it will take time. There is proof out there for the vw tdi cars, and the big trucks that tow 6.0L +. But I will need to prove this for myself also.

Many people are skeptical, and I'm not here to prove anything to anyone else. I want to increase my mileage because it's fun and because it's great for the environment. If you want to ignore this as a possible fuel saving mod, I'm okay with that. If you are genuinely interested, I'll be sharing my results when I have some solid data, so it'll be free info to everyone. Either way Happy eco-modding blownoiler!

[TimV]

The vid is ready. Will be uploaded in a few houres.

Temps are still dropping. It is now 10 degrees celsius. Maybee going need to build a partially lower grill block.

Next mod to be: kill switch.

How do i kill a modern diesel the right way?