Fortis Saxonia

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2012 Fortis Saxonia team photo

Fortis Saxonia (made up of the Latin words for powerful and Saxony ) is an interdisciplinary team of students and graduates from the TU Chemnitz . The aim is to build a light and energy-efficient vehicle. Furthermore, awareness should be raised for environmental aspects in connection with mobility. Based on the principles of lightweight construction and optimization of efficiency , the team designs all vehicles (called Sax) themselves. These are driven by electric motors that draw their energy from hydrogen fuel cells . Fortis Saxonia is a registered non-profit organization and consists of around 20 students and graduates. The project is financed by sponsorship money and donations.

history

  • 2004: Founding in November by members of the mechanical engineering student council at Chemnitz University of Technology
  • 2005: First participation in the Shell Eco-Marathon in Nogaro / France . The team was not able to drive a rating and was eliminated due to a defect in the fuel cell.
  • 2006: 12th place out of 255 participants. The aim was to get from Chemnitz to Paris (1000 km) with the equivalent of one liter of premium gasoline. Thanks to the light construction and improved construction of the Sax 1.1, the team managed a distance of 1742 km, which would be almost enough for the way there and back.
  • 2007: Sax 2 achieved 5th place out of 262 participants and 3rd place in the fuel cell vehicle class. The range was 2552 km. This corresponds to an energy requirement of the equivalent of 0.039 liters of premium gasoline per 100 km of driving.
  • 2008: Premiere of the Sax 3 at the Shell Eco-Marathon. Due to a weather-related accident, no rating could be achieved.
  • 2009: After the Shell Eco-Marathon moved to the Lausitzring , the team achieved 9th place out of 91 participants in the prototype class and 2nd place among the German hydrogen teams. Range: 2469 km.
  • 2010: Participation in the competition with the vehicle “Nios”. It achieved 1st place in the "AutoDesk Design Award - Urban Concept" and a range of 200 km.
  • 2011: Sax 3 reached 3rd place among the German hydrogen teams in the overall ranking. With one liter of premium gasoline, a distance of 2688 km could be covered.
  • 2012: The further development of the Sax 3, the SAX4 took 7th place at the SEM 2012 in Rotterdam . With one liter of Super, a distance of around 2000 kilometers was driven on the city course.
  • 2013: At the Shell Eco Marathon, from 15. – 17. May in Rotterdam, the SAX4 took 5th place. This made it the best German team in the prototype (hydrogen) category.
  • 2014: At the Shell Eco Marathon, May in Rotterdam, participation with Umicore EcoBee .
  • 2015: At the Shell Eco Marathon in Rotterdam participation with Ecobee revised. A complete race could not be achieved.
  • 2016: Participation in the Shell Eco Marathon for the 10th time; the competition took place for the first time in London in Queen Elizabeth Park. The route includes a 6% gradient before the home straight.
  • 2017: Participation in the Shell Eco Marathon in London with the new UrbanSAX vehicle . Because of a bent suspension, the last race was canceled.
  • 2018: At the Shell Eco Marathon in Paris, it was not possible to finish with a race after a transport damage.
  • 2019: Start of the Shell Eco-marathon with UrbanSAX.

vehicles

The self-developed vehicles, based on the team name, mostly bear the name Sax.

Sax 1

Sax 1 was the first self-developed fuel cell vehicle from Fortis Saxonia. The c w value was 0.15. With a mass of 75 kg, the vehicle managed a top speed of 45 km / h. In the following year it was further developed to the stage Sax 1.1. Thanks to the lightweight construction with carbon fiber reinforced synthetic resin, the weight could be reduced to 62 kg. As a result, the range has been increased to over 1700 km.

Sax 2

Sax 2 on his record run

The most important change to the Sax 2 was the chassis . Thanks to its flow-optimized design, the c w value could be reduced to 0.11. The team made further improvements to the drive and rear-wheel steering. The weight has been reduced by around a third to around 45 kg thanks to the new shape and the changed materials. The effect-optimized fuel cell as well as the aerodynamically significantly improved body significantly increased the efficiency of the Sax 2 compared to its predecessor.

Sax 3

First impression of Sax3

For Sax 3, the tried and tested outer shape of Sax 2 was used. Changes were only made in detail. The layer structure of the carbon fiber chassis as well as the structure of the aramid honeycomb were changed according to the actual loads. The previously mechanical steering was replaced by a mechatronic one for safety reasons . With appropriate programming, this steer-by-wire steering system prevents the vehicle from swerving at high speeds.

Nios

The vehicle was created in 2010 in cooperation with the universities of Merseburg and Halle . In contrast to the Sax models, the Nios is a near-series competition vehicle. The Nios concept aims to combine ecological materials with space that is suitable for everyday use and a modular structure. For this reason, it received the design award at the Shell Eco-marathon.

SAX4

The tried-and-tested external shape of the Sax 3 is used for the SAX4. Changes were made in detail. In addition to optimizing the carbon fiber chassis and the drive system, the main aim of the development was to increase reliability. The SAX4 was presented at the Shell Eco-marathon 2012 in Rotterdam.

Umicore EcoBee

In 2013 there were initial considerations to develop a new car that could compete in the Shell Eco Marathon in the Urban Concept category . Unlike the prototypes, this vehicle category is intended to be able to drive in road traffic later. The driver sits in the car and there is also a trunk, things that are not necessarily good for the range in the prototype. The new main sponsor Umicore supported the association financially and also with materials. Due to the underlying philosophy - learning from nature - the car is called Umicore EcoBee.

The EcoBee has a fuel cell with an output between 2 and 3 kW and weighed around 200 kg in 2013.

EcoBee from 2015 had improved air ducting with a modified suction concept, a newly designed, highly integrated fuel cell housing that was generatively manufactured , and a synchronous machine instead of the DC motor previously used. The drive train has also become lighter, so that the vehicle weight has been reduced to 180 kg.

UrbanSAX

Vehicle with fuel cell for the Eco-Marathon 2017. The surface area exposed to is significantly smaller than with the EcoBee , the target weight is 150 kg. For participation in 2018 the vehicle was 15 kg lighter, aerodynamically revised and equipped with a smaller electric motor of the same power.

Awards and honors

Web links

Individual evidence

  1. ^ Mario Steinebach: Bad luck at the Nogaro-Ring. In: tu-chemnitz.de. May 26, 2008, accessed November 2, 2019 .
  2. ↑ Off-Track Awards. In: www.shell.com. Archived from the original on April 26, 2012 ; accessed on November 2, 2019 .
  3. ↑ Shell Eco ‐ marathon Europe Final results: Prototype - Hydrogen. (PDF; 90.87 kB) In: s05.static-shell.com. June 6, 2016, archived from the original on January 13, 2014 ; accessed on November 2, 2019 .
  4. ↑ a b AUTO AND TECHNOLOGY: Green Life Special - FOCUS Online. In: focus.de. May 19, 2014, accessed November 2, 2019 .
  5. ↑ a b Press office of the TU Chemnitz on May 19, 2015, The "Ökobiene" flies again , accessed on May 1, 2019.
  6. ↑ data.fortis-saxonia.de newsletter, annual review 2015 , accessed on May 3, 2019.
  7. ↑ "Fortis Saxonia" is celebrating its tenth anniversary and is looking for newcomers. In: tu-chemnitz.de. Retrieved November 2, 2019 .
  8. ↑ data.fortis-saxonia.de, Newsletter 2016 page 2 , accessed on May 3. 2019.
  9. ↑ a b Shell Eco-marathon Europe 2017 is in the starting blocks. In: shell.de. May 25, 2017. Retrieved November 2, 2019 .
  10. ↑ Chemnitzer Ökö-Mobil has to stop racing in London. In: hitradio-rtl.de. May 29, 2017. Retrieved November 2, 2019 .
  11. ↑ data.fortis-saxonia.de, Annual Review 2018 page 1 , (PDF, 3.47 MB) accessed on May 1, 2019.
  12. ^ Fortis Saxonia. In: fortis-saxonia.de. Retrieved November 2, 2019 .
  13. ↑ Katharina Thehos: TU students want to achieve a lot with little energy. In: tu-chemnitz.de. April 18, 2012, accessed November 2, 2019 .
  14. ↑ Nico Bohn, Matthias Fejes, Matthias Fejes: Frugal student electric car starts in Paris. In: tu-chemnitz.de. May 29, 2018, accessed November 2, 2019 .
  15. ↑ 06.11.2006: Students from Saxony score points with their eco-mobile. In: tu-chemnitz.de. Retrieved November 2, 2019 .