I am looking for the manufacturer of the diesel engine (Africa Oil)

crude vegetable oil, diester, bio-ethanol or other biofuels, or fuel of vegetable origin ...
Christophe
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by Christophe » 01/10/12, 17:09

Yes for the "average" CS the best is always obtained close to the maximum power ...

chatelot16 wrote: modern small fast diesel are not as good


Is that so? Not in kWh at the crankshaft anyway! Attention because often we also speak in gr / cv.h ...
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by the middle » 02/10/12, 07:28

In the text, they speak of 14 liters of oil for 10 hours of use.
What more.
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by Gaston » 02/10/12, 08:58

lejustemilieu wrote:In the text, they speak of 14 liters of oil for 10 hours of use.
En assuming use at full power, that's 10 * 5,9 = 59 kWh.
That is to say a specific consumption of 0,237 liters / kWh (and a little less in grams since the oil has a density <1).
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by Christophe » 02/10/12, 09:37

We don't quibble for too long but I Assumed that it is not at full power ... on generators it is often given at 75% ...

0.24 L / kWh is not far from the CS of a modern engine ...
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by Aumicron » 02/10/12, 10:11

Christophe wrote:the best "average" CS is always obtained close to the maximum power ...


I think it's pretty close to the maximum torque.
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by chatelot16 » 02/10/12, 10:31

Aumicron wrote:
Christophe wrote:the best "average" CS is always obtained close to the maximum power ...


I think it's pretty close to the maximum torque.


when we say close to the maximum torque it is a function of the speed ... for a generator the speed is constant! and if the generator set is well designed the nominal speed is at the speed of the best efficiency

the discussion here is that becomes the consumption when the power decreases at constant speed

with these old slow engine it runs by itself ... when the power drawn by the alternator decreases the efficiency remains good

with modern fast engines there is too much that turns quickly and loses power: it is acceptable at maximum power, bad at reduced power

it is not only a theory: it is found with agricultural tractors by comparing very old tractors with slow engines, and the most recent with fast and turbo engines: the fast has better consumption when used at full power, but consumes too much at reduced power ... the slow old has a less good performance than the modern at full power, but keeps a good performance at low power: it is more versatile

there is therefore no complex to have: for a generator it is important to have power in rab to support the peak of power: therefore turn almost permanently at 1/2 or 1/4 of the power maxi: the economy at low power is therefore more important than at maximum power!
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by Christophe » 02/10/12, 10:52

Aumicron wrote:
Christophe wrote:the best "average" CS is always obtained close to the maximum power ...


I think it's pretty close to the maximum torque.


Uh ... on gasoline yes where the 2 are fairly close in engine speed but not on diesel where the maximum torque is obtained low in RPM ...

(another quibble lol)
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by chatelot16 » 02/10/12, 11:32

Christophe wrote:0.24 L / kWh is not far from the CS of a modern engine ...


and still the oil only contains 0,8 times the energy of diesel fuel so it's comparable to 0,19 l / kWh of diesel! it is very good

well it is rather a sign that it did not produce 10KW
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by Did67 » 02/10/12, 12:27

I believe that there are several "copies" of this good old teufteuf in Africa, in particular to animate pumps or mills.

I remember (but it goes back now) Indian copies, indeed ...

Well, in charge, he "smoked" a little anyway! Sorry, they were emitting particles! In their defense, you have to see what they swallowed. And sometimes how they had been taken apart / reassembled !!! Just if there is not a handful of sand to lubricate ... It still makes extenuating circumstances !!!

[For use in France: watch out for noise - the original exhaust was a pipe coming out on the roof!]
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by chatelot16 » 02/10/12, 13:24

Christophe wrote:Sorry could not prevent me from checking if my memory was still working quite well. This is the Indian engine. Brand: FIELDMARSHAL

It's actually a copy of a LISTER 8 / 1 engine

Datasheet (1ere page of the report of my previous message)

Image


I can't find it in the links you put ... but I find it at codeart.org
http://www.codeart.org/pdf/dossier/2006 ... e-site.pdf
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