Ojala
Ojala Reader
3/25/13 2:32 p.m.

I am finally making a new pump assembly for my alcohol injection assembly. Right now it runs on your standard 12v Shurflo ag pump and bypass. I would like to try using an inverter to run an Ulka pump. They are rated at 15 bar, they are cheap, the flow rate is just right, and they are small (unlike the Shurflo).

The motors can be had in 24v, 110v, or 220v and all are 48w. Would I see any benefit between the various voltages? Is there anything I am missing or could I wire up a cheap 100w inverter through a relay to an ignition switched power source so that the inverter has power while the car is on. Then I could run the pump off of that through the pump controller. Is heat going to kill the whole mess? How do I judge the quality of an inverter? For the pump controller I have now I basically copied what others have made and tweaked it a bit for my usage. My main concern now is introducing an inverter into the mix and having it be rock solid reliable.

GameboyRMH
GameboyRMH UltimaDork
3/25/13 2:40 p.m.

You might want to find a 12v to 24v PSU instead, it will be much more efficient and lower heat than an inverter.

Edit: Found one here:

http://www.amazon.com/Converter-Regulator-12v-Step-24v/dp/B0085T97PW

Ojala
Ojala Reader
3/25/13 3:22 p.m.

Here is one of the pumps

I am under the impression that these motors are AC. Wouldn't I still need to use an inverter to go from 24v dc to 24v ac? Is there another solution or way around this or what am I missing?

RossD
RossD UberDork
3/25/13 3:55 p.m.

I would avoid another step in the power conversion process (i.e. inverter). Just another loss in power.

GameboyRMH
GameboyRMH UltimaDork
3/25/13 4:53 p.m.

Yeah it looks like all the pumps are AC (I assumed the 24V was DC) so you can't get away from using an inverter.

Hal
Hal Dork
3/25/13 5:22 p.m.

QUESTION: Your Shurflo pump is a rotary pump. The Ulka pumps are vibratory(diaphragm) pumps.

Is that going to work?

Ojala
Ojala Reader
3/25/13 6:03 p.m.

In reply to Hal:

We shall see, but its just alcohol and water. The pumps are rated at 2/1 and the cc/min graphed against bar are just what I need. I don't see why not, but I won't really know till I try it.

I guess at this point I am more worried about the quality of inverters available.

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