Pollution of vegetable oil fuel

Christophe · by **Christophe** » 07/08/08, 14:39

Some information relating to the emissions of the vegetable fuel oil used, even in a "kite" engine ... which does not change the chemical structure of the oil (cetane number in particular).

Extract from the excellent document: Bio fuel oil: extraction, packaging and use

For the analyzes (engine degradation, fouling below 500 ° C) read the pages 30 and 31 of the doc: Bio fuel oil: extraction, packaging and use

FRANCK (49) · by **FRANCK (49)** » 07/08/08, 14:48

interesting these two graphics

like what better to preheat go then roll to the oil, than to start 100% oil live.

and how long does an engine reach a chamber temperature above 500C ° in 2mns? or in 10mns?

Christophe · by **Christophe** » 07/08/08, 14:56

Ben it's not so simple ...

The room temperature mainly depends on ... engine configuration (direct injection, indirect) and the engine load !!

So in the city, there is a chance that you will NEVER reach the 500 ° C ...

jonule · by **jonule** » 07/08/08, 15:34

most direct injections are less than 500 ° C, 220 ° C at idle for example, this improves the yield and lowers the conso.
on the other hand it takes 300 ° C to WELL burn vegetable oil.

after there is "below 500" and "below 500" ...

any engine idling too long will get dirty, whether diesel or oil.

so yes everything depends on the load, I think of vegetable oil for the transport sector, not the automobile ...

anyway "Vegetable oil contains no nitrogen, no sulfur, no heavy metals and no dangerous pollutants."

which relativizes the fact of starting with diesel to less pollute ... that gives the sulfur, the heavy metals and the dangerous pollutants, the cerium oxide when the engine is below 500 ° C? and above?

Castex Clement · by **Castex Clement** » 07/08/08, 15:45

Hello,
Christophe said: So in the city, there is a chance that you never reach the 500 ° C ... it is not so on because bad cooling saw reduced speed rise in temperature water and oil so room + high?

Castex Clement · by **Castex Clement** » 07/08/08, 15:51

it would be necessary to find a nebulizer to put in admission adm. to add H2o

jonule · by **jonule** » 07/08/08, 16:06

yes, like the famous "vix" which plugged into the LDR cirucit ...

for the room temperature T ° C, it is related to the load, ie to the work of the engine: if it does not pull anything, it does not work. it could be made to make electricity in slow motion, which would consume, but we can charge this electricity in a specific battery that can be used in the evening for example? we have never calculated how much the kw produced by a motor following fuel ...

carburologue · by **carburologue** » 07/08/08, 17:47

a motor whose compression ratio is 20 / 1 will have 695 degree Celsius at the pmh ... :!:

and again 356 degree to the pmb

Christophe · by **Christophe** » 07/08/08, 17:52

Castex Clement wrote:Hello,
Christophe said: So in the city, there is a chance that you never reach the 500 ° C ... it is not so on because bad cooling saw reduced speed rise in temperature water and oil so room + high?

No, we must not confuse the engine with the combustion temperature.

To reach a good T ° of combustion, stoichiometry is no secret: must force on the engine!

It can go up to 2500 ° C on a Turbo Diesel.

carburologue · by **carburologue** » 07/08/08, 17:57

You talk about temperature in the room, not that of the engine

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Pollution of vegetable oil fuel