Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Interesting *French* document about aerodynamics and Mathis 333

groar · 09-16-2008, 06:47 AM

http://inter.action.free.fr/publications/auto-eco.pdf

Sorry, this document is in *French*, but it has a lot of interesting drawings and data.

It talks about having an economical car through aerodynamics, weight and using the correct power. The chapter 4 (p. 13-25) is dedicated to the Mathis 333. The chapter 7 (p. 32-47) show lots of examples with data.

To help you :

Cxp = Cd
Sf = A (m²)
1 km = 0.622 miles
1 l = 0.264 gallon US
To get mpg, divide 235.2 by the l/100km. Ex : 5 l/100km = 47.04 mpg

The conclusion is that we can have today a consumption of 1.5l/100km (156mpg) at 90km/h (56mph), ie dividing it by 4, by :

dividing weight by 3 : from 1200kg to 400
dividing aerodynamic (S.Cx alias A.Cd) by 2 : from 0.8m² to 0.4
dividing hp by 5 : from 100hp to 20

and with a mechanical/electrical hybrid system it should be lowered to 1l/100km (235mpg).

Have fun,

Denis.

09-16-2008, 06:47 AM	#1 (permalink)
groar X-Frenchy: very Join Date: Jun 2008 Location: Toulouse, France Posts: 595 scenic - '01 renault scenic 90 day: 43.09 mpg (US) megane - '97 renault megane classic Diesel 90 day: 72.53 mpg (US) dennisius - '06 Toyota Prius Team Toyota 90 day: 69.27 mpg (US) Thanks: 9 Thanked 34 Times in 23 Posts	*Interesting French* document about aerodynamics and Mathis 333** http://inter.action.free.fr/publications/auto-eco.pdf Sorry, this document is in French, but it has a lot of interesting drawings and data. It talks about having an economical car through aerodynamics, weight and using the correct power. The chapter 4 (p. 13-25) is dedicated to the Mathis 333. The chapter 7 (p. 32-47) show lots of examples with data. To help you : Cxp = Cd Sf = A (m²) 1 km = 0.622 miles 1 l = 0.264 gallon US To get mpg, divide 235.2 by the l/100km. Ex : 5 l/100km = 47.04 mpg The conclusion is that we can have today a consumption of 1.5l/100km (156mpg) at 90km/h (56mph), ie dividing it by 4, by : dividing weight by 3 : from 1200kg to 400 dividing aerodynamic (S.Cx alias A.Cd) by 2 : from 0.8m² to 0.4 dividing hp by 5 : from 100hp to 20 and with a mechanical/electrical hybrid system it should be lowered to 1l/100km (235mpg). Have fun, Denis. __________________ Save money & CO2 at home : http://ecorenovator.org/ Created and managed by the creators of http://ecomodder.com/ --- Earth and health are priceless, so are kilotank and AT-PZEV Best Mégane tank: 1268.9mi @ 77.847 MPG(US) 2008/06-2011/10 saving: 5725.5 kg CO2 (5342.6+382.9) Diesel / Money: 42.17% = 2446.25€ = 3357.26$ --- megane : thread - kill switch.