Sponsors Biodiesel & SVO Home Biodiesel & SVO Forums Conservation & Efficiency Diesel injector for homemade gas turbine
Biodiesel & SVO Home Biodiesel & SVO Forums Conservation & Efficiency Diesel injector for homemade gas turbine Topic Closed|
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Enola Straight,
I would be very interested to know just how you are going to do this. I thought that gas turbines required a multi-stage compressor at one end of a shaft driven by the hot gasses in the thrust end. And yes, you can strip down a diesel injector quite simply by unscrewing the end and taking out all the gubbings. regards dva |
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I played with a turbo to provide air for my veggie furnace. Didn't really amount to a turbine engine, I just wanted to eliminate my auxillary fans. I couldn't get oil to flow through the bearing at all, so I only experimented with it a few minutes at a time. Someday, I will get ambitious and tear the turbo down and get new bearings put in it. I would love to hear the details of your setup. Do keep us posted on your project!
Keep everything as simple as possible, but no simpler --Albert Einstein |
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member 2008 Sponsor |
I used a Bosch injector for my turbine (thesis project). It was from a petrol engine, electrically controlled and normally operating at about 70psi. Fuel was #2 diesel with a little gasoline to help ignition, which was a model-T spark coil and the longest spark plug I could find. I could control the fuel flow, and therefore power, with a simple pulse circuit (PWM). It was good for about 300hp with the single injector before it twisted the coupling off of the dyno.
If you want to use a diesel injector, proper spray spray pattern needs the pintle and other solid parts. You can remove the spring, or replace it with something much weaker to reduce the operating pressure, but it'll still need pretty high pressure to atomize oil adequately. Another option is an oil furnace spray nozzle, but they're not really designed to seal through a pressurized combustion chamber wall. Cheers, JohnO |
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member 2008 Sponsor |
JOHNO -- 300 HP ??-- What size gas engine did this beast come from. My local salvage yard has a couple from huge dsl semi's, about 6 inch diameter air/exhaust ports. I have consideres playing with these. Your design sounds like it worked well and answered several questions I had about what approach to use.
--------------------------------------------------------------------- 92 dodge cummins with over 260,000 miles. Running an unheated 50% diesel/50% WVO blend for about the last 75,000 miles when temps above 50 deg f, no modifications or heating except the addition of a throw-away in-line fuel filter (removed during cold weather). As of 8-01-05 I have been testing a 75% WVO/15% gasahol (90% RUG/10% ethanol)/10% diesel blend. Works fine down to about 65 f then starts rough. Runs ok once engine warms up. Back to a 50/50 diesel blend sence 9-15-05, just to cool now. -- 11-01-05 Modified stock fuel tank internal fuel pickup to have I.D. of 3/8 inch, this eliminated cold start slow idle and bogg on acceleration. Now adding 1 ounce each of acetone and pure gum spirits of turpentine to each 5 gallons of any blend, seems to help keep the fats in solution to a lower temperature --Heated 2nd tank in the works |
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I assume you've seen these links....
homemade turbine engine propane beer cooler I'd like to play along these lines, but haven't figured out a god way to get usefull shaft work out of 'em. |
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To make power I used a second larger turbo and removed the compressor wheel... and placed it on the exhaust of the small turbo... I had a 2 pole magnet made of Samarium-cobalt and pushed it into an aluminum sleeve to keep it from shattering at high RPM... I mounted it on the shaft and ballanced the assembly... I used a stator from a small 110 volt motor wand secured to the housing... it made over 400 volts and turned over 150,000 RPM.. output was 2.5kW at arround 70K RPM... ball bearrings and a recuperator would have made a big improvement in efficiency...
If it was more fun everyone would be doing it! |
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Sponsors Biodiesel & SVO Home Biodiesel & SVO Forums Conservation & Efficiency Diesel injector for homemade gas turbine
Biodiesel & SVO Home Biodiesel & SVO Forums Conservation & Efficiency Diesel injector for homemade gas turbine© Maui Green Energy 2000 - 2008