Electric Bus in Real-World Operations
TROY electric buses, in collaboration with IETT, serve the Istanbul transport network, proving performance, reliability, and cost advantages in one of the world's largest metropolitan systems.
250+ km
318 kWh
Battery capacity
105 total
Capacity (28 seated + 77 stand)
90 mn
DC rapid charge (10–100)
Range per charge
Modern Transit-Focused Design
Vehicle Configuration
Mobile Energy System
The vehicle serves as more than transport; it functions as a mobile power source via integrated outputs. Energy ports: 2 × 220V and 2 × 380V sockets, allowing the bus to power tools or emergency infrastructure when needed.
The TROY 12-meter low-floor electric bus is engineered to meet the operational demands of intensive urban transit systems. With high passenger capacity, advanced battery tech, and rapid charging capability, the platform delivers reliable and efficient public transport.
Battery Technology
Liquid Immersion Cooling
TROY buses feature a patented system where battery cells are immersed in dielectric coolant. This technology maintains ideal operating temperatures in extreme environments from –20°C to +50°C, ensuring consistent performance and maximum safety levels.
Benefits
EFFICIENCY
Superior energy autonomy
CLIMATE CONTROL
Stable use in extreme environments
CAPABILITY
Fast charge ready
SPEED
Reduced downtime
The system actively regulates cell temperatures during both charging and discharging cycles to extend battery lifespan and improve overall reliability.
TRUST
Enhanced safety through active regulation and dielectric cooling.
CERTIFICATES
Global Regulatory Approval
The platform has received European type approval confirming compliance with international safety and regulation standards. Approvals: Turkish Standards Institute (TSE) - Aug 15, 2023; National Standards Authority of Ireland (NSAI) - Aug 22, 2023. Ready for European roads.
Active in Istanbul Transit Lines
TROY buses perform under real passenger loads, serving as a core component across multiple IETT city lines.
Line 55
- Depot: Edirnekapı Start: Harbiye Military Museum End: Gaziosmanpaşa Total Stops: 25 Route Length: 14 km Journey Time: 25–40 minutes
Line 28
- Depot: Edirnekapı Start: Beşiktaş Square End: Topkapı (Fatih) Total Stops: 23 Route Length: 11 km Journey Time: 45–55 minutes
These routes represent high-density urban corridors with frequent stops and heavy passenger traffic loads.
Operational Cost Advantage
Data from buses operating in Istanbul shows significant economic benefits compared to diesel vehicles. Analysis of cost per kilometer and annual ownership highlights that low operating expenses, reduced maintenance needs, and zero emissions make electric buses the most sustainable long-term solution.
Electric Bus – Technical Specifications
(Conversion of 2006 Mercedes Citaro Electric)
1. Vehicle
- Vehicle Type: 12m low-floor, low-entry city bus
- Length: 12,000 mm
- Width: 2,500 mm
- Height: 3,425 mm
- Wheelbase: 5,845 mm
- Empty Weight: 13,805 kg
- Gross Vehicle Weight (GVW): 18,000 kg
- Door Configuration: 3 doors
- Passenger Capacity (Case Study): 28 seated + 77 standing
- Passenger Capacity (Citaro Conversion): 29 / 30 (seated / standing)
- Noise Level: 73.7 dB
2. Battery System
- Battery Chemistry: LiFePO₄ (Lithium Iron Phosphate)
- Battery Capacity: 318 kWh (physical), 265 kWh (usable)
- Maximum Voltage: 766.8 VDC
- Nominal Voltage: 691.2 VDC
- Minimum Voltage: 572.4 VDC
- Insulation Measurement: 0 – 10 MΩ
- Architecture: 800V system architecture
- BMS: Proprietary battery management system
3. Battery Thermal Management
- Cooling / Heating Type: Liquid immersion system
- Chiller Cooling Capacity: 10 kW
- Chiller Heating Capacity: 6 kW
4. Drivetrain & Performance
- Number of Motors: 1
- Motor Type: Central asynchronous motor
- Drive Configuration: Rear-wheel drive
- Motor Power: 300 kW
- Maximum Speed: 70 km/h (limited)
- Range (Citaro spec): Up to 300 km
- Range (Real Operation): 250+ km
5. Charging System
Charging Interface
- Standard: CCS2
AC Charging
- Power: 22 kW
- Voltage: 3 × 230 VAC
- Voltage Range: 190 – 265 VAC
- Charging Time (10–80%): ~10 hours
DC Fast Charging
- Power: 180 kW
- Charging Time (10–80%): ~1 hour
- Charging Time (10–100%): ~90 minutes
6. Auxiliary Systems
- 24V DC Converter: 14 kW
- 12V DC Converter: 4 kW
- Electric Steering Pump: 5.5 kW
- Air Compressor: 5.5 kW
- HVAC Compressor: 9.3 kW
- Cabin Heating: 12 kW
7. External Power Supply
- 2 × 220V outputs: Standard compatibility
- 2 × 380V outputs: For industrial infrastructure