PAC-Car II
Pac-Car II is a motor vehicle with fuel cell drive , which has been optimized for low fuel consumption. It was developed by a group of students at ETH Zurich (Eidgenössische Technische Hochschule). The aim of this project was to develop a vehicle that uses as little fuel as possible during operation. In realizing this ambitious goal, the students were supported by experienced team leaders from business and universities. A fuel cell was used to provide the energy , which was specially developed for this vehicle at the ETH / PSI Paul Scherrer Institute .
Facts
- Lowest possible air resistance ( c w = 0.075; A = 0.254 m 2 )
- Extremely lightweight housing (total weight of 29 kg, carbon fiber reinforced plastic )
- Low rolling resistance thanks to special radial tires (c R = 0.0008)
- Highly efficient drive unit (efficiency almost 50%)
- Driving strategy optimized for the route and the vehicle key figures.
- Use of modern simulation and optimization programs ( numerical fluid mechanics (CFD), finite element method (FEM), Matlab / Simulink , GESOP)
World record
On June 26, 2005, PAC-Car II set a world record for the lowest fuel consumption during the Shell Eco-Marathon in Ladoux ( France ) (5385 km / l petrol equivalents , which roughly corresponds to the distance from Gibraltar to the North Cape). During the third race over a distance of 20.6 km, the vehicle only consumed about one gram of hydrogen at an average speed of 30 km / h. One gram of hydrogen corresponds to the energy content of 0.00375 liters of gasoline.
This world record has entered the Guinness Book of Records .
Footnotes
- ↑ Applies to Shell Unleaded 95 (EU) petrol at 15 ° C. Calculated with values from the rules of the Shell Eco-Marathon [1] , http://www-static.shell.com/static/ecomarathon/downloads/2010/2010_SEM_rules.pdf ( Memento from November 27, 2009 on WebCite )