DIY Propane Injection
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From: Kent WA
Originally Posted by banks7.3
the t60 regulator is the same regulator that tsperformance uses on their propane systems. it does work off of vacuum. i set mine up the first time to get vacuum after the air cleaner. then i moved the port to the air cleaner housing, before the air cleaner, so a dirty filter would not affect the vacuum. that worked much better.
http://www.tsperformanceproducts.com/propane.html
http://www.tsperformanceproducts.com/propane.html
Last edited by CheaperJeeper; Oct 30, 2006 at 12:31 PM.
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CheaperJeeper,
I think banks7.3 is talking about doing this on a turbo and I believe the turbo will create a vacuum before the fresh air inlet.
Do they make a sensor that reads backpressure – I think that would work as a good “engine load” sensor kind of what Spectramac was talking about.
93
I think banks7.3 is talking about doing this on a turbo and I believe the turbo will create a vacuum before the fresh air inlet.
Do they make a sensor that reads backpressure – I think that would work as a good “engine load” sensor kind of what Spectramac was talking about.
93
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From: Quesnel, BC, Canada
here is an extremely good explanation of how regulators work:
http://fuelsforum.rasoenterprises.co...hp?p=2111#2111
interesting for sure, Im still going to have to read it a few times before I fully understand it. lol just read it. I think you, like me, had the wrong idea of how a regulator works.
http://fuelsforum.rasoenterprises.co...hp?p=2111#2111
interesting for sure, Im still going to have to read it a few times before I fully understand it. lol just read it. I think you, like me, had the wrong idea of how a regulator works.
Impco diaphragm style mixers have an air-gas valve (gas valve for short) that controls the fuel mixture. The gas valve is a variable orifice whose open area increases with increasing air flow in the mixer. The vacuum produced in the mixer (which is supplied to the mixer's diaphragm) is directly proportional to air flow and is NOT related to manifold vacuum. Because the mixer receives fuel at a constant pressure, the increasing fuel flow through the gas valve with increasing air flow results in a combustible fuel mixture at all times.
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From: Kent WA
Originally Posted by pud
here is an extremely good explanation of how regulators work:
http://fuelsforum.rasoenterprises.com/viewtopic.php?p=2111#2111
interesting for sure, Im still going to have to read it a few times before I fully understand it. lol just read it. I think you, like me, had the wrong idea of how a regulator works.
http://fuelsforum.rasoenterprises.com/viewtopic.php?p=2111#2111
interesting for sure, Im still going to have to read it a few times before I fully understand it. lol just read it. I think you, like me, had the wrong idea of how a regulator works.
The regulator itself just controls the flow of propane - which is what we are trying to do with the propane injection system. In this case the propane is a secondary or supplimental fuel - the diesel is the main fuel. Because of that fact we only need to meter the propane with a regulator, rather than try to mix it with air using a mixer. Of course the reason we want to meter the propane is so that the engine is being supplied the correct amount of supplimental fuel based on the load (demand).
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From: Kent WA
Originally Posted by 93_E_350
CheaperJeeper,
How much propane is need to do this thing? the regulator for a propane grill has 0.4 psi output, what's the flow rate needed? For me I'd like a little help in the 1400 to 2000 rpm range.
93
How much propane is need to do this thing? the regulator for a propane grill has 0.4 psi output, what's the flow rate needed? For me I'd like a little help in the 1400 to 2000 rpm range.
93
That is why I'm trying to put together a system with an adjustable first stage regulator on the tank, so I can adjust supply pressure, in addition to the adjustable "demand" style regulator metering the propane into the engine.
Beyond that there can also be some tinkering done with the oriface sizes to help fine-tune it.
So the short answer would be "I don't know exactly, but I want a system with enough flexibility and adjustability to be able to determine that experimentally"
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Cheaper. I have a "BullyDog" propane injection system on my truck...uses a sensor that bolts into the turbo, the regulator has a screw to dial up or down. The regulator is also piped into my heater hose to ensure the propane is in a gas state instead of liquid. Theory is, when the turbo is under load, propane is on.
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CheaperJeep,
Look at this it’s a gold mine of info for the blow it up yourselfer! – “Propane Fumigation” - I like the warning: “My understanding is that it is a very fine line between lots of extra power and a dose of LPG that will render an engine scrap metal in a hurry, so consider carefully before you decide to "turn it up"”.
http://www.mrsharkey.com/lpg.htm
93
Look at this it’s a gold mine of info for the blow it up yourselfer! – “Propane Fumigation” - I like the warning: “My understanding is that it is a very fine line between lots of extra power and a dose of LPG that will render an engine scrap metal in a hurry, so consider carefully before you decide to "turn it up"”.
http://www.mrsharkey.com/lpg.htm
93
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From: Kent WA
Originally Posted by bc6.9
Cheaper. I have a "BullyDog" propane injection system on my truck...uses a sensor that bolts into the turbo, the regulator has a screw to dial up or down. The regulator is also piped into my heater hose to ensure the propane is in a gas state instead of liquid. Theory is, when the turbo is under load, propane is on.
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From: Kent WA
Originally Posted by banks7.3
yes my set up is turbo w/ ram air type set up.
Looking at the idea of tapping vacuum off of the brake booster and run it through a valve attached to the throttle. As the throttle opens it would open the valve metering the amount of vacuum applied to the vacuum port on the T60 beam regulator. It wouldn't sense RPMs, but it would vary the propane flow based on throttle opening.
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From: Kent WA
Originally Posted by 93_E_350
CheaperJeep,
Look at this it’s a gold mine of info for the blow it up yourselfer! – “Propane Fumigation” - I like the warning: “My understanding is that it is a very fine line between lots of extra power and a dose of LPG that will render an engine scrap metal in a hurry, so consider carefully before you decide to "turn it up"”.
http://www.mrsharkey.com/lpg.htm
93
Look at this it’s a gold mine of info for the blow it up yourselfer! – “Propane Fumigation” - I like the warning: “My understanding is that it is a very fine line between lots of extra power and a dose of LPG that will render an engine scrap metal in a hurry, so consider carefully before you decide to "turn it up"”.
http://www.mrsharkey.com/lpg.htm
93
Unfortunately his is a "Dump" type system as well - just one fixed rate of propane flow. Good info on orafices and calculations though. Thanks!
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Cheaper, I don't have a turbo...yet, I did a lot reading and with experience of having propane injection on a non turbo IDI. So if you want any real oomph, ya have to go turbo...and maybe water injection as well??
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From: Kent WA
Originally Posted by bc6.9
Cheaper. I have a "BullyDog" propane injection system on my truck...uses a sensor that bolts into the turbo, the regulator has a screw to dial up or down. The regulator is also piped into my heater hose to ensure the propane is in a gas state instead of liquid. Theory is, when the turbo is under load, propane is on.
Originally Posted by bc6.9
Cheaper, I don't have a turbo...yet, I did a lot reading and with experience of having propane injection on a non turbo IDI. So if you want any real oomph, ya have to go turbo...and maybe water injection as well??