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cx Renault, coeficient aerodinamic

flavius1963
post 4 Nov 2008, 08:04
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Stie careva CX-urile la Renault ?Nu am gasit pe nicaieri.


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Renault Clio 3 - OT 02 BYX 2008 1.4 16V Dinamique
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valpred
post 4 Nov 2008, 14:30
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Intra pe www.renault.fr si configureaza un model.
Pentru Clio III am obtinut:
AERODYNAMISME = 0,725S(M²)/Cx .


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flavius1963
post 4 Nov 2008, 18:12
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Multumesc Valpred,dar si pentru un camion mi se pare enorm Cx-ul de 0,72.Pe la 0,35 mai mergea.Nu stiu ce metoda de masurare au ei.


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flavius1963
post 10 Dec 2008, 21:17
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Am gasit.Drag coefficient pt.Clio III = 0,34


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dj22sib
post 3 Jan 2012, 22:46
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Salut, pe site-ul acesta scrie ceva de 0.28. Suna cam bine sa fie adevarat smile.gif.

http://www.carinf.com/en/20a0414122.html

Drag coefficient (Cd/Cx/Cw)
Quantifies the resistance (drag) of the vehicle, while moving through the air. Contemporary automobiles achieve a drag coefficient from 0.30 to 0.35. Cd is also known as Cx in France and Cw in Germany

0.28

daca am sti si suprafata, am putea sa calculam cx-ul din raportul de mai sus care sa 0.725

This post has been edited by dj22sib: 4 Jan 2012, 17:19


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Renault Megane 1.6 16V Expression Sedane, - DJ Clio III 1.4 16V Exception
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dj22sib
post 6 Jan 2012, 14:38
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QUOTE(valpred @ 4 Nov 2008, 15:30)
Intra pe www.renault.fr si configureaza un model.
Pentru Clio III am obtinut:
AERODYNAMISME  = 0,725S(M²)/Cx .
*




Comparativ cu alte masini care sunt maricele pare ca valoarea e si ea una maricica la Clio. La un S Class e de 0.65 si la un Golf 6 e de 0.68.

smile.gif Valori luate din revista AMS. Termenii de comparatie nu sunt optimi si la pretul platit, dar m-am gandit numai la marimea masinilor.

This post has been edited by dj22sib: 6 Jan 2012, 14:39


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laucan
post 24 Jul 2012, 20:58
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QUOTE(valpred @ 4 Nov 2008, 14:30)
Intra pe www.renault.fr si configureaza un model.
Pentru Clio III am obtinut:
AERODYNAMISME  = 0,725S(M²)/Cx .
*



Atentie! Unii producatori publica valoarea Cx-ului inmultita cu aria suprafetei transversale maxime. Acest 0,725 poate fi 0.34 (Cx) inmultit cu 2.13 m2 (aria suprafetei transversale maxime).

Cx-ul nu poate depasi, de obicei, la automobile 0.57 (Hummer H2).

Daca vreti mai multe detalii referitoare la Cx (coeficient aerodinamic) vedeti aici.


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dj22sib
post 4 Aug 2012, 13:38
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e trecuta formula in paranteze.


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