water injection = Higher Efficiency?

[bazman]

something like this perhaps? Moran Billet Atomizer Injectors

100lb/hr would likely be enough.

[tjts1]

Originally Posted by bazman

Does anyone know of an electronic fuel injector that could handle water/meth? I believe that if I ran one of those attached to any custom and programmable ECU then the water could be be injected with almost infinite variability between minimum flow and maximum. This would enable the injection to do something most kits cannot - inject under both vacuum and boost while varying the flow seamlessly.

Most water injection kits require 2 or more jets to vary flow from high to low OR if they have mappable flow control, they can only cope with either boost or vacuum not both.

An old used Link ECU from a raceparts bin, and a fully electronic injector that can atomise water from low flow to high flow would be perfect I'd think.

Wonder if methanol EFI injectors would work/come in acceptable flow rates?

Modern EFI injectors are all stainless internals and are therefore capable of handing E85 or straight water. The catch is that you have to use distilled water otherwise the EFI injector will clog very quickly. You can run the extra injector in parallel with the existing EFI injector circuit so same PW and timing as your existing injectors. Position the water at the mouth of the TB and only switch it on when the TB is open. This will ensure that you are always running a fixed proportion of water to fuel at all times. In my case I used 1 water injector at 43psi to 6 fuel injectors of the same size running the same PW. Works quite well. I need to figure out a permanent solution for the water pump. I can't drive around with the air compressor in the trunk all the time then stop to plug it in every few miles lol

[oil pan 4]

Originally Posted by bazman

they can only cope with either boost or vacuum not both.

My water/methanol pressure regulator system would work with both boost and vacuum.

If you read the water injection wiki you would see I have found a part for or solved every problem you have except for "an electronic injector".
The only reason I have not found an "electronic injector" is because I have no need for one.

[oil pan 4]

Originally Posted by bazman

100lb/hr would likely be enough.

Not for a diesel, you would need more than 1.

[drmiller100]

gasolne has almost no lubricating properties any more, and water is actually more viscous then gasoline (better lubrication).

I think you could use any fuel injector for water.

[drmiller100]

Originally Posted by tjts1

The catch is that you have to use distilled water otherwise the EFI injector will clog very quickly. l

or use a fuel filter for the water......

[oil pan 4]

Water injection - EcoModder

[mort]

Originally Posted by ecomodded

A Briggs & Stratton 4-stroke lawn mower engine would make a great test subject for water injection.
A mad scientist could rig up his water injected lawnmower and do a-b-a testing on gas usage for a set track consisting of the front & back yard, undoubtedly.

edited to add-

You could run the motor on the bench, running for a set amount of time for a-b-a-b-a testing. Although your neighbors may prefer if you were to cut the lawn..

Hi ecomodded,
When you add water or steam the flame speed slows including increased ignition delay. You'd need to be able to advance the timing, which I can't do on any of my small 4 strokers. Is there a way?
-mort

[tjts1]

Originally Posted by drmiller100

or use a fuel filter for the water......

no

[ecomodded]

Mort I have a idea for adjusting the timing.
The Briggs & Stratton small engines are set at the factory, the timing is determined by the placement of the armature (coil) and position of flywheel on crankshaft.
Perhaps by modifying the flywheel key position you could have control over the timing.

To filter tap water you would need a ceramic or equivalent water filter to remove all minerals and organic matter.