F1 » Grosjean: You have to stay calm...


Romain Grosjean knows what it takes to produce a strong performance in Monaco, but can he guide Lotus F1 to points in Principality?

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107SS2009

May 19, 2014 12:54 PM

As things stands Lotus are still one step behind RBR in their Renault updates.
In Monaco they will get the new specification (blend) of Total fuel that is reputed to have benefited the Renault PU in the RBR by 12 hp in Barcelona.

here4thesun2

May 20, 2014 3:11 AM
Last Edited 123 days ago

107SS2009: As things stands Lotus are still one step behind RBR in their Renault updates.
In Monaco they will get the new specification (blend) of Total fuel that is reputed to have benefited the Renault PU in the RBR by 12 hp in Barcelona.


Do you happen to know if Renault's HP improvements were achieved through running different fuel compounds through the power unit or if Red Bull's improvements have been through running different fuel through Renault.

I hear this is the next big thing. Makes sense.

107SS2009

May 20, 2014 8:42 AM

The fuel development importance went into overdrive with the advent of the new turbocharged power unit formula, this was as expected when one remember the previous turbo era, the fuel rules of today are much more strictly controlled than back than as are the boost levels by means of the fuel flow rate. This year mclaren can never achieve power unite levels out of their Mercedes PU on the level of the other Mercedes engine teams and not even on par with all the two other engine manufactures PU'S as supplied to other teams as all of them bar mclaren uses the fuel the PU'S were developed on and that includes any development in the fuel in collaboration with the PU'S manufacturers , even STR which is sponsored by a particular fuel supplier uses Total as per Renault specification, while mclaren either stuck whit Mobil or was prevented from using Petronas which Mercedes developed their PU on.

107SS2009

May 20, 2014 8:55 AM

I mentioned the importance of fuel development at around the festive season for the new PU'S, that was before winter testing, but only Richard was able to and picked-up the point (importance of it) on here and we talked some about it, but all went mostly unnoticed by everybody else on here who are mostly lost in Lulu this and Lulu that.

richard

May 20, 2014 9:06 AM

sunny. yes it is an interesting topic. i wonder what is being added to improve the calorific content. but i do hope that we are not getting into the previous times when the fuel became highly toxic.

107SS2009

May 20, 2014 12:45 PM

Richard hope you come back to this page and read, as you know for me it is of the highest interest, the problem is it's a highly complicated subject, to such an extent that unless one have a degree in chemistry it is hard to even start scratch the surface (subject). Suffice to say that the 2013 engines needed fuel with very high combustion speed but octane was less important, the 2014 engines needs very high octane but combustion speed is less important, about toxicity as the rules stand today's fuel cannot get on the levels of yesteryear. Now for something new, rumours are doing the rounds that engine oil that can expand is being developed containing additives that cannot be used with fuels (rules) and that the engine oil (fumes) is being made to sneak by (in) via the breather pipe which means extra MJ'S when burned not measured by the flow meter.

richard

May 20, 2014 3:33 PM

sunny. that is a good idea! use an oil with some nitrous oxide blended in, and then the no would be fed back into the engine. the only problem with that idea is the fact that an external breather with catch tank has to be fitted! and the machining tolerances are far too tight to allow any gas past the rings (i presume that they still use rings?)

107SS2009

May 20, 2014 6:04 PM

Crankcase breathing cannot be vented to atmosphere.
Oil and air is scavenged out of the crankcase and goes through an oil/air separator, oil is returned to the oil tank and air/fumes (breather pipe) are routed back to the engine air intake, same as on road cars.
Piston rings are still in use in F1, The Cosworth CA 2.4l 20k rpm motor used piston rings less than 0.7mm.

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