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Do you guys just stick normal premium diesel in your car, or is V-Power Diesel a must for this engine?
It will be quite happy running on normal diesel JoJo. Mine gets some premium diesel when it visits a race track/ 1/4 mile etc. The rest of the time I usually run it on normal Shell. I do put some 2 stroke in mine but I wouldn't recommend that with a DPF on the car.
To the original poster - the difference in diesel - there is no performance difference. Unlike petrol, it is only focused on "detergents". Gazwould has touched upon the reason why above.
With a guaranteed cetane rating of 55 compared to 51 for normal diesels, the performance advantage was only to be expected.
I can tell you that a high performance car such as the RS7 will make more power on RON 98 fuel than RON 95. This isn't for an RS7 it's for a BMW 335i but you can see the car makes a good deal more power on 98 RONRON and Cetene is about controlled burning of the fuel. Stick Ron 98 in a car that is fine with RON95 like the RS7 and it makes no difference.
Al-Khwarizmi Engineering journal? Really. Do you not think it might be biased. Besides - it is engine dependant. Not the kind of reaearch i can trust and again, i'd love there to be proven benefit.
The RS7 i'm told performs no different with higher than ron95 by audi uk - happy to be educated though.
The research is unscientific, is not published in a reputable journal. Its also likely to be biased and whilst my opinion is guesswork - its not rocket science when you consider where its from if you have basic understand of the oil industry. Either way - it is poor science.Why is the research likely to be biased ???
Misleading to say basics of diesel and the BiTDI are the same -we're not talking about basics. The cycle hasn't changed but the advancements are drastic. The overall technology has advanced to incredible levels I don't think should be taken for granted. You are misunderstanding where the differences are.The basics of the diesel engine are no different in the BI-turbo, fuel is introduced into a cylinder gets compressed and it goes bang.
Just not true - this is engine dependant but Govt has now set minimum limits on the cetene and RON. For the BiTDI, the level it requires is standard diesel which is actually very good.the same improvements in performance, economy and emissions are seen with diesel that has a higher CN number.
Incorrect, RPM is not a factor certainly in the BiTDI and most modern engines are working as designed. The only fact is that time is shorter (which is obvious), but this is not where higher cetane helps - beyond what it needs.More so in an engine that runs to much higher RPM than a lot of diesels. As engine RPM increases the time available to inject fuel and get it to completely burn becomes very short. This is where fuels with a higher Cetane number really score.
Complete made up nonsense. The hydrocarbon density is way more important. Cetene is much less relevant because the Govt now sets minimum standards for the pumps (for all suppliers). Improving cetene beyond what the car requires is pointless. Combustion quality?Cetane is the key measure of diesel fuel combustion quality
The injectors dictate how much vapour mix is burned - not the cetane rating. The smaller the particles the better the burn. This is what factors to the energy released (in the physics definition of energy - not car Power). The "how fast you can get it out"?With a higher cetane number Diesel burns more smoothly and completely. So it releases energy more efficiently, which contributes to better engine performance.
It's not just the amount of energy that's present, it's how fast you can get it out.
Stick that in your BiTDI and I'd happily bet cars your MPG drops. This stuff was designed back when we had leaded petrol.Much like the RS7 being set to run and make power on 95 RON fuel the diesels will be set up for 51CN
If you want to make your own super diesel then get some 2-ehn and dose up normal 51cn pump diesel to 55cn. 500:1 would work.
http://www.oilem.com/tag/2ehn/
http://www.ebay.co.uk/itm/2-EHN-Hig...464625?hash=item2ed21ac231:g:lA4AAOxy3yNThHQP