EDI Vehicle

From Communauté de la Fabrique des Mobilités


EDI 3.8.2 v62.png EDI 3.8.2 v65.png

Fiche Contact :

Level of project development: concept
Le véhicule en résumé ! eDI project represents a significant advance beyond the state-of-the-art in city transport and reduces parking lots. Engineering profession and road legal regulations focus on the optimization of components of traditional 4-wheeled cars. In contrast, the ground-breaking concept of eDI offers several advantages over them.

eDI will be homologated as an L7e-A1 or will get a certificate with "Exemptions for new technologies or new concepts". L7e-A1: A vehicle with four wheels, other than that classified for the category L6, whose unladen mass is not more than 400 kg (550 kg for vehicles intended for carrying goods), not including the mass of batteries in the case of electric vehicles and whose maximum continuous rated power cannot exceed 15 kW. It has maximum two straddle seating positions, including the seating position for the rider and a handlebar to steer.

Diwheel or dicycle is a vehicle with two parallel wheels, side by side. There are some electric diwheels that are still in use today. Diwheels do not meet the technical requirements of vehicles used for daily commuting in light of: (a) moment of inertia, (b) weight distribution and (c) unsprung masses. This explains the fact that they did not spread on public roads and user centric usage.

Big Diwheels: The main challenge is their unstable handling. Big wheels have a high moment of inertia, which causes significant issues with how to turn, accelerate and brake. The larger the moment of inertia, the more difficult to control them, which could lead to accidents. Examples: Edward (1) and 360 Happy Car (2).

Small Diwheels: Also known as self-balancing scooters, hoverboards and Segway Ninebot S models. The biggest challenge for these models is the weight distribution. If one wheel rotates at a different speed than the other wheel during a turn, one side could rise higher than the other, leading to a loss of balance. Additionally, the smaller wheels make it difficult to ride on uneven surfaces or potholes, which increases the risk of accidents. Examples: hoverboards (3) and Segway Ninebot S (4).

eDI concept: The suggested concept is addressing the challenges arising from the physical nature of diwheels, including moment of inertia, weight distribution, and unsprung masses, through a know-how.

Model: EDI
Contact: Áron Ecsenyi
Partenaire impliqué (industriel, fablab, labo...) :


Ediwheel to know the needs and help EDI Vehicle. The skills the team is looking for for this vehicle are Action/Planification, Compétence en groupe/Connecteur : connecte les personnes selon leur centre d'intérêt, Equipement/Véhicule, Politique/territoriale - Les personnes ayant les compétences recherchées par l'Equipe :ANTOINE DACREMONT, Abdourahamane, Adam Mercier, Adrien Pitois, Alain Dubois... further results

Tags: French Mobility, mobilités durables

Related challenge(s): L'extrême défi ADEME, Maximiser les usages de l'espace public (personne et marchandise)

Common produced: Electric Power Train

Community(ies) of interest: Communauté de l'eXtrême Défi, Communauté des acteurs des Challenges de la Mobilité, Communauté des offreurs de solution de mobilité, Communauté du Stationnement de du curbspace

Country: United Kingdom

On the map:
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Technical Elements of the Vehicle[edit source]

Vehicle type: Non identifié

Vehicle category: inconnue

Main use cases for this vehicle are :

Vehicle category: L7eA1

Vitesse maxi de l'assistance (en km/h) : 80

Type de route utilisable route goudronnée, chemin grade 1, chemin grade 2, chemin grade 3, chemin grade 4, chemin grade 5

Number of people: 1

Number of rear wheel: 2

Number of front wheel: 2

Total mass of the vehicle (kg) :

Mass of Battery (kg) :

Consumption at 25km/h (Wh/km) :

Consumption at 45 km/h if concerned (Wh/km) :

Consumption at 80 km/h if concerned (Wh/km) :

Trunk/load volume: 500 litre

Drive type: electrique

Transmission type: non renseigne

Steering type: non renseigne

Type of braking: disque

Chassis materials: acier

Type of assembly: soude, boulonne

Autonomie visée (km) : 150

Puissance (en W) : 30000

Tension batterie (Volt) : 126

Ampère.heure Batterie (A.H) : 40


Response file to the eXtreme Challenge[edit source]

Describe here your answer on 2 of the 6 parts (Vehicle, Energetics) by providing new informations continuously.
The 4 other parts (Narrative, ecosystem, economic and feedback) are to be detailed in your Team sheet: Ediwheel

Special features:
  • Rotor: hubless, in-wheel (without drive chain)
  • Motor: Electro-magnetic (axial flux PMSM)
  • Driving: Gyroscope-based handlebar
  • Driving wheels: 2 hubless

The eDI vehicle is a revolutionary concept designed to address several challenges arising from the unique physical nature of diwheels. It utilizes advanced materials, cutting-edge technology, and innovative design to achieve optimal performance, efficiency, and sustainability. Below is a detailed description of key components, materials, and their status:

Concept Overview:

  • Driving Configuration: eDI is a diwheel, which means it has two large driving wheels arranged side by side.
  • Rotor: The vehicle features hubless, in-wheel rotors, eliminating the need for a traditional drive chain. This design choice significantly reduces the number of components and ensures a more streamlined and efficient power transfer.

Power and Propulsion:

  • Motor: eDI is equipped with electromagnetic motors that utilize axial flux Permanent Magnet Synchronous Motor (PMSM) technology. This type of motor offers exceptional power and efficiency.
  • Peak Power/Engine: Each engine delivers a remarkable 14.7 kW of peak power, enabling efficient and powerful propulsion.
  • Peak Torque/Engine: The motors generate a peak torque of 272 Nm, ensuring robust performance.

Energy Storage:

  • Battery: eDI employs a 3.2V lithium iron phosphate battery with a capacity of 12 kWh. This high-capacity battery provides a substantial range while maintaining energy efficiency.
  • Range: The vehicle offers an impressive range of 150 km on a single charge, making it suitable for a variety of commuting needs.
  • Consumption: With a consumption rate of only 80 Wh per kilometer, eDI is exceptionally energy-efficient.

Braking System:

  • Brake Type: The vehicle features a disc brake system to ensure effective and responsive braking.

Handling and Control:

  • Driving: eDI is controlled through a gyroscopic-based handlebar system, providing intuitive and stable maneuverability.
  • Max Speed: The vehicle has a maximum speed of 80 km/h, making it suitable for urban and suburban travel.

Materials and Environmental Considerations:

  • Zirconium Oxide (ZrO2): Zirconium oxide is used for bearing balls due to its non-magnetic properties, low magnetic permeability, and high resistance to corrosion, abrasion, and repetitive impact stress. It ensures durability and longevity in critical components of the vehicle.
  • Polycarbonate: The vehicle features optically transparent polycarbonate for its semi-cylindrical windscreen. This material has a fracture toughness of 3 MPa√m, is easily molded and thermoformed, and serves as a lightweight, shatter-resistant alternative to traditional glass.
  • Teflon: Teflon is utilized to minimize friction and insulate the air gap within the motor. It boasts a low coefficient of friction, outstanding chemical resistance, and excellent electrical insulating properties. This material reduces energy loss and ensures efficient operation.

eDI's design and materials selection focus on sustainability, efficiency, and performance. While specific details about the know-how and intellectual property are not disclosed due to protection, the vehicle embraces environmentally friendly principles and advanced technologies to meet the challenges of diwheels, making it a promising concept for the future of urban transportation.

Vehicle File: 
Fichier Véhicule (AAP Proto) : eDI_prototype - Technical.pdf
Fichier associé au guide de montage : 
Lien vers un espace de stockage des fichiers 3D : 
Partenaire impliqué (industriel, fablab, labo...) : 

1. Lifespan of the Vehicles:
  • The lifespan of electric vehicles like eDI can vary but typically ranges from 10 to 15 years or more. For this analysis, let's consider a conservative estimate of 12 years.

2. Gray Energies of Manufacturing:

  • Manufacturing processes typically include the production of various components, assembly, and associated energy consumption. Gray energy refers to the energy used in these manufacturing processes.
  • Detailed life cycle assessments (LCAs) would be needed to estimate the gray energies more accurately for each component, but a rough estimate can be made.

3. Gray Energies of Maintenance and Refit:

  • Maintenance and refit processes involve periodic servicing, component replacements, and any refurbishments.
  • Gray energies associated with maintenance can be estimated based on typical maintenance schedules and procedures for electric motorcycles/quadricycles.

4. Gray Energies of End of Life:

  • The end-of-life phase involves recycling, disposal, or repurposing of vehicle components.
  • The gray energies for this phase would depend on the recycling processes and materials recovery.

5. Energies of Use (Typical Journeys):

  • To estimate the energy consumption during typical journeys, we use the given data:
    • Consumption: 80 Wh/km
    • Range: 150 km
    • Max Speed: 80 km/h
  • Average energy consumption per journey = Consumption x Range = 80 Wh/km x 150 km = 12,000 Wh (or 12 kWh) per journey.

6. "Discounted Energy Flow" Calculation:

  • A "discounted energy flow" calculation would involve estimating the total energy consumed throughout the vehicle's lifespan, including manufacturing, maintenance, refit, and use.
  • This calculation would need detailed data for gray energies at each stage of the vehicle's life cycle, as well as the energy consumption during typical journeys.

It's important to note that precise data for gray energies would require specific assessments for each component and manufacturing process used in the eDI/Ediwheel. A comprehensive life cycle analysis would provide a more accurate assessment of energy flows and environmental impacts. The choice of materials, production methods, and recycling processes can significantly impact the overall energy balance and environmental sustainability of the vehicle.

Energetics File: 

Fichier lié aux expérimentations 
Name of the pioneer to test the vehicle : Anirudh Pednekar, Máté Zöldy, Tamás Ecsenyi, Áron Ecsenyi
Lister le(s) territoire(s) d'expérimentation : Zalazone Park
Date de disponibilité du véhicule à la location ou vente : 2025-03-14T19:14:08.000Z
Date Début des expérimentations : 2024-07-15T19:14:08.000Z


Compléments : To test the eDI vehicle's braking performance, our team plans to utilize the available BRAKE MEASUREMENT SURFACES at the AVL ZalaZONE Proving Ground. This state-of-the-art facility offers a variety of surfaces to comprehensively assess braking efficiency, safety, and overall performance. Here's a detailed description of how we will conduct the eDI testing on these surfaces:

  1. Chess Surface: The Chess Surface will be used for standard braking tests. This will allow us to evaluate the eDI's braking distance, efficiency, and stability under typical road conditions. We will test the vehicle's ability to come to a controlled stop on this surface.
  2. High Friction Surface: This high-friction surface is ideal for assessing the eDI's ability to brake quickly and safely. It simulates emergency braking situations where the vehicle needs to come to a rapid stop. This test will help us understand the eDI's performance in critical scenarios.
  3. Japanese Tiles: We will use this surface to assess the eDI's braking performance on different textured road surfaces. Japanese Tiles simulate urban road conditions with varying friction. Testing on these surfaces will provide insights into the eDI's adaptability to real-world driving scenarios.
  4. Blue Basalt: The Blue Basalt surface will allow us to evaluate how the eDI handles braking on road surfaces with distinct textures and friction profiles. This is essential for understanding the vehicle's performance on a variety of road conditions.
  5. Asphalt: Standard asphalt surfaces are prevalent on most roads. Testing the eDI on asphalt surfaces will ensure that it can effectively brake under typical road conditions. We will assess its braking response and stopping distances.
  6. Polished Concrete: Urban environments often feature smooth, polished concrete roads. This surface will help us evaluate how the eDI's brakes perform on such roads, ensuring safety and stability in city driving scenarios.
  7. Aquaplaning Basin: Wet road conditions pose unique challenges. To evaluate the eDI's braking performance on wet surfaces, we will conduct tests in the Aquaplaning Basin. This will help us assess how the vehicle handles braking under wet conditions.

Our testing program will encompass various scenarios, including emergency braking, different speeds, and diverse road conditions. Data collected during these tests will be crucial in ensuring that the eDI's braking system meets rigorous safety and performance standards for a wide range of real-world driving conditions.

Conducting these tests at AVL ZalaZONE Proving Ground provides a controlled and safe environment to obtain precise measurements and insights into the eDI's braking capabilities. Additionally, the facility's other testing areas, such as the dynamics platform and the ADAS surface, will be used to perform complementary tests and evaluate the overall performance of the eDI in various driving scenarios.