Shell Eco-marathon Poland 2026 | TUS Team | Technical University of Sofia

Poland 2026

Offline mode, showing a cached version.

603

BG0003001 TUS Team

Technical University of Sofia

Urban Concept UC Hydrogen Fuel Cell H2

Results

Attempt 6

119.8

74.4

km/m3

mi/m3

Best attempt

Current Rank

3rd / 3

2 138.2 km/m3 85.9 mi/m3 +15.4%

3 119.8 km/m3 74.4 mi/m3

Technical Inspections

Before they get on track, Urban Concept vehicles need to pass a series of 10 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

10/10
Complete 10/10 inspections passed

Passed

1. Inspection Queue Entrance

4 / 4

Passed

2. Driver Checks

13 / 13

Appropriate motorsports helmet - Primary Driver (21 a-g)

Helmet label readable - Primary Driver (21 c)

Helmet has no cracks/indentations - Primary Driver (21 c)

Visor is clear and has no cracks - Primary Driver (21 d)

Single piece fire retardant racing suit (s) - Primary Driver (22 a)

Fire retardant gloves - Primary Driver (22 c)

Flat, closed toe shoes - Primary Driver (22 b)

Cotton socks, no bare skin visible - Primary Driver (22 b, e)

FCR balaclava if used - Primary Driver (22 d)

Driver weight (> 70kg) - Primary Driver (20 a)

Ballast required? (20 b)

Ballast based on lightest driver (20 b)

Ballast of suitable type, proper location, sealed (20 b)

Passed

3. Brakes

10 / 10

Brake documentation (67 c ii)

Brake rotors point in direction of wheel rotation (43 a)

Ergonomy (both hands on steering mech.) (32 c)

Effectiveness Ramp Test - Dynamic (51 e)

4 disc hydraulic brake (51 a)

X design or front / rear. One dual master cylinder or 2 master cyls (51 b)

Single brake pedal with at least 2,500 mm² (51 a)

Parking brake must keep vehicle stationary (51 d)

Disc thickness > 3 mm (51 a)

Commercial brake system, not bicycle (51 a)

Passed

4. Driver Safety

21 / 21

The safety harness is designed for motorsport activities. (29 g)

Mounting points are clearly accessible for inspection (29 e)

Safety Belts = 5 mounting points (29 a)

Must have minimum 5 independent belts attached to structure - chassis fixing (29 a)

Crotch strap under body (29 b)

Safety belt must be in straight line between mounting point and shoulder (29 f)

Safety belt has a tight fit (no slack), length adjustor high enough for adjustment (29 c)

No modifications of safety belt (29 h)

Safety belt strength verified (29 d)

Quality of body driver collision protection (26 a)

Internal/ext'l opening mech effective/intuitive (30 c)

Method of opening accurately marked with sticker (30 c)

No adhesive tape to close driver compartment from outside (30 d)

Roll bar resist 70 kg all directions (26 d)

Roll bar 50 mm > driver's head - Primary Driver (26 b)

Roll bar width > shoulders - Primary Driver (26 c)

Driver exit < 10 seconds - Primary Driver (30 a)

Front vis 180° & Tint - driver must be seen - Primary Driver (28 a)

Rear visibility - see cheat sheet - Primary Driver (28 b)

Quality of body driver collision protection (26 a-d)

Crumple space-protect from front/side impact (25 a) ii, 26 a)

Passed

5. Vehicle Dimensions

9 / 9

Height 1000 - 1300 mm (45 a)

Width 1200 - 1300 mm (45 b)

Length 2200 - 3500 mm (45 c)

Track width > 1000 mm (front) (45 d)

Track width > 800 mm (rear) (45 d)

Wheelbase > 1200 mm (45 e)

Ground clearance > 100mm (45 g)

Drivers compartment > 880 mm (45 f)

Width at drivers shoulder > 700 mm - Primary Driver (45 f)

Passed

6. Mechanical Vehicle Design

32 / 32

Passed

7. Electrical Design

31 / 31

Passed

8. Energy Verification

19 / 19

Documentation (schematic, H2 flow, fuel cell, regulator) (65 a) i, 67 c)

No external starter battery (65 k) i)

Hydrogen cylinder firmly installed (65 b) iv)

Regulator installed correctly (65 a) iv 1)

Pipe H2 suitable, S.Steel (1.0 bar), PTFE (<1.0 bar) (65 e)

Connectors H2 OK (comp type, no Teflon) (65 e) iv)

Normally closed solenoid valve (37 f) i)

Pressure relief valve installed and set correctly (65 a) iv 4)

Pressure relief valve vents outside vehicle (65 a) iv 4)

Purge pipe vents outside or not used (65 f)

Correct system design (65 a) iv)

2 ventilation holes 5 cm² (65 c)

Hydrogen sensor at highest point (65 d)

Leak Check OK (65 d)

Flowmeter installed and functioning (65 a) v, g) iii)

JM Counting Correctly (56 c)

Supercap Joulemeter reading voltage & Energy (65 i) iii)

Emergency shutdown function (H2 Valve & Propulsion) (37 f) ii)

Efficiency of Estop (3 methods, valve/MC) (37 f) ii)

Passed

9. Telemetry

3 / 10

Passed

10. Final Checks

4 / 4

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Europe and Africa 2025	Urban Concept UC	Hydrogen Fuel Cell H2	3	176.36km/m3 109.58mi/m3
Europe and Africa 2024	Urban Concept UC	Hydrogen Fuel Cell H2	3	204.08km/m3 126.81mi/m3
Europe and Africa 2023	Urban Concept UC	Hydrogen Fuel Cell H2	5	164.48km/m3 102.2mi/m3
Netherlands 2022	Urban Concept UC	Hydrogen Fuel Cell H2	-	Did not pass technical inspection

Poland 2026

BG0003001 TUS Team

Technical University of Sofia

Results

Attempt 1

Attempt 2

Attempt 3

Attempt 4

Attempt 5

Attempt 6

Current Rank

Technical Inspections

1. Inspection Queue Entrance

2. Driver Checks

3. Brakes

4. Driver Safety

5. Vehicle Dimensions

6. Mechanical Vehicle Design

7. Electrical Design

8. Energy Verification

9. Telemetry

10. Final Checks

Previous participation