Can it be used

[frederik]

Hello Turbine Nerds and thank you for membership.

I have been planning for a long time to build a jet turbine and now I will start collecting parts. But for me to get started, I need your help with finde the right turbo. I have one lying on the shelf, but from what I can read is it not good for such a projekt. 












So before I go out and spend money on a new one, I would just like your opinion and maybe subsequent help to find it right.



Gaol for my project:

I have a little moon-car that I would like to drive down to the neighbor for a couple of times and back. with top speed of about 10-20 mph. on either propane or diesel.



sorry my english, i'm from Denmark and have apparently not heard properly in english hours

should i disassemble it for measurement or can you se enough from the pictures
?


Best Regards Frederik

[frederik]

Compressor A/R 50
turbine A/R 84
Type: T04E

[racket]

Hi Frederik

Welcome to the Group :-)

What diameter is the compressor wheel inlet , and what diameter is the turbine wheel outlet ??

Cheers
John

[frederik]

HeY John.


Compressor inlet= 59mm (+-1mm)
Turbine outlet= 61mm
for a more accurate measurement of the compressor inlet wheel I need to disassemble it.

[frederik]

If I'm lucky it can be used, I would have thought my design should be something like this.

maybe a little larger diameter flametube as I can get from the blacksmith.

[racket]

Hi Frederik

We might need to get more info on the compressor wheel dimensions as theres a fair few different Trims for the TO4E www.micturbo.com/t04e-flow-maps.

The comp wheel inlet at 59 mm and the turb outlet at 61 mm aren't the best combination , the "numbers" don't seem to make sense for such a turbo

Cheers
John

[frederik]

Very sorry. my measurements were totally miserable but not because i think it makes my turbo better suited.



Compressor inlet diameter of the wheel is: 55mm



Turbine outlet diameter of the wheel is: 57mm



Do the numbers fit the turbo T04E better?

[racket]

Hi Frederik

Could you please measure the exducer diameter of the comp wheel so that we can determine the Trim and know which of the comp maps might be used.

The turb exducer is only a little larger than the comp inducer so there'll probably be a bit of flow restriction , so knowing the comp Trim is important

Cheers
John

[frederik]

With these measurements, I can't get my A / R ratios on the compressor and turbine  to fit. Am I just totally miserable to measure.

[racket]

43 Trim

[dieselguy86]

Jun 20, 2020 0:56:36 GMT -5 frederik said:

With these measurements, I can't get my A / R ratios on the compressor and turbine  to fit. Am I just totally miserable to measure.

A/R is a measurement for the housings, trim is a measurement for wheels. 43 trim means it is suited more towards high pressure/ medium flow.

It would work ok if all you want is to start it and run to half speed. It won't reach max performance because the exhaust side is too small.

John's recommendation is the exhaust wheel area be +20% greater than the intake side. Which means yours should be around 60mm diameter.

[frederik]

I've been trying to figure out how much half gas would be on such a turbine in Pressure . Maybe it could be more than I need.
But may have found a turbo, I just do not have the opportunity to see if it meets the targets. It comes from a V12 industrial engine. can one assume that such a large turbos made for industry has 20% larger turbine wheels than the compressor?
I just can't find data on the turbo online.

Am I also in doubt whether the chamber division on the turbine housing makes it unusable?

link for turbo: www.guloggratis.dk/maskiner/landbrugsmaskiner/reservedele/annonce/47610399-overgemtenye-industriladere

[racket]

Hi Frederik

Your 55 mm inducered turbo would possibly produce ~15 Kgs of thrust , which would get a lightweight vehicle moving, but that larger turbo would provide enough thrust to make things "enjoyable" :-)

Generally large diesel turbos have generously sized turbine stages as they try to minimise backpressure on the engine to improve fuel efficiency .

Would you be able to get some wheel sizes from the Seller ?

Cheers
John

[frederik]

thank you very much for the help for all my beginner questions. that's great help.
only some approx. measurements on inlet compressor and outlet of Turine.
Compressor inducer 74mm and turbine exducer 90mm
but he will not peel it off for metering.
The turbo has never been used and he has to have 200 dollars for one, it seems like a fair price.

What about the chamber division of the turbine house?

[racket]

Hi Frederik

Thats a very reasonable price .

With a 90 mm turbine exducer and a 74 comp inducer the flow shouldn't be restricted

The turbine scroll inlet will create some "challenges" but nothing impossible , you might find that only using one port is a possibility, it'll depend on whats inside the scroll , possibly a stator/NGV and/or some sort of split arrangement to maximise pulse energy from the IC engine .

For the price its well worth taking the chance

Cheers
John