Quote:
Originally Posted by niky
Spraying water mist in the exhaust should lessen particulate emissions, true, but better to nip them in the bud by spraying at the intake.
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Well, that's something I actually don't want to do. Reason is that I could then still combine it easily with the hydrogen injection system. If I also add in water injection things get overly complicated, and may not even work any more.
There are 3 methods I was thinking of to make the spary system:
* either by using a battery-operated garden sprayer (see
here )
* or by using a garden misting system (see
here )
* or by simply attaching a metal box directly to the exhaust pipe which is connected with a small hose and water tank (in the car) and a water outlet with misting nozzle above the exhaust pipe.
The last method is the one I prefer, although it reduces the outlet gas flow a bit (since it cools the pipe somewhat). Benefit with this system is that the heat from the pipe heats up the water, making a battery unnecessary. Also, I won't need to make any changes to the electronics (as the spray system would only be allowed to operate when the engine's running). By calculating out the hose diameter and making it small enough, I can restrict water flow, so it doesn't spray too much water either (that way I can keep the water tank small as well). Also, the water tank sits above the the metal box it's connected to, meaning the whole is gravity-powered and doesn't need any pump either. I will need to find a metal spray nozzle though (most are plastic) since this is going to get very hot, and I'll need to custom-make the metal box.