110 kW / 180 kW Steering Electric Portal Axle for Bus, Trolleybus
This 110 kW / 180 kW steering electric portal axle is designed for public transport vehicles such as battery electric buses (BEBs) from 8 meters to 10 meters or trolleybuses. It adopts the distributed drive technology, allowing for precise torque and speed control of each wheel independently. Due to its unique features, this product enables highly customizable configurations for buses and provides passengers with greater convenience through its fully low-floor and wide-passenger aisle design.
Whatsapp: +8619352173376
Email: contact@brogenevsolution.com
Key Features of Brogen Electric Portal Axle
Distributed Drive
Adopts the distributed drive technology for the precise control of torque and speed of each wheel independently.
Compact & Lightweight
The compact layout integrates the motor, suspension system, and drive axle, reducing the need for complex components and space required by traditional drivetrains.
Independent Suspension
The four-airbag independent suspension structure results in lower noise and more stable steering.
Technical Parameters
| Motor Type | PMSM |
| Motor Power (Rated / Peak) | 2×55 kW / 2×90 kW |
| Maximum Motor Speed | 9500 rpm |
| Motor Output Torque (Rated / Peak) | 2×140 N.m / 2×350 N.m |
| Rated Voltage | 540 VDC |
| IP Rate | IP67 |
| Axle Weight | 850 kg |
| Rated Axle Load | 9000 kg |
| Maximum Wheel Speed | 540 rpm |
| Gear Ratio | 17.55 |
| Rim Size | 22.5 inch |
| Tire Size | 305/70R22.5 |
| 385/65R22.5 | |
| Brake | Air disc brake |
| Maximum Steering Angle | ±18° |
Basic Structure
- The four-airbag double wishbone design offers reduced unsprung mass for a smoother ride with improved comfort and stability.
- With high torque and power density, the dual motors provide a strong and reliable output.
- The reducer reduces the motor output speed to increase torque.
- The Motor Controller controls the motor to operate at the desired speed, angle, direction, and response time.
- Other Electronic Components: accelerator pedal sensors, brake pedal sensors, Hall-effect wheel speed sensors, Hall-effect steering angle sensors, roll angle sensors, yaw rate sensors, and controller hardware.
Working Principle
- The VCU calculates the total torque demand based on the driver’s acceleration or deceleration intent.
- The electric drive control unit (DCU) allocates the total torque between the left and right drive motors based on the steering angle, vehicle posture sensors, and road surface traction coefficients.
- The left and right motor controllers (or 2-in-1 integrated motor controller), upon receiving the instructions, convert the energy from the battery to the necessary power for the drive motors, ensuring the vehicle’s stability and handling.
Solution Benefits
Low-Floor Design
Adapts to the fully flat low-floor design and allows for easy one-step entry, providing a spacious aisle and reducing the risk of passenger falls.
IP67 Protection
An IP67 protection rating effectively prevents the intrusion of dust and water, providing enhanced performance in challenging conditions.
Lower Maintenance Costs
Utilizes maintenance-free wheel hub units, lowering maintenance costs. The advanced EDS ensures tire replacement intervals exceed 100,000 kilometers.
Core Technology - Distributed Drive Electric Powertrain
Traditional Electric Powertrain Solution
- Centralized Drive → Poor driving maneuverability
- Centralized Brake → Long braking distance
- Centralized Steering → Large turning radius
- Long Mechanical Transmission Chain
- Significant energy transmission losses;
- Poor applicability across vehicle models;
- Insufficient passenger space
Distributed Drive Electric Powertrain Solution
- Drive / Brake Decoupling
- Distributed Drive → Enhanced control on complex surfaces
- Distributed Brake → Reduced braking distance on complex surfaces
- Distributed Steering
- Four-wheel Independent Steering → Reduces turning radius; enables lateral movement and zero-radius turns; significantly enhancing maneuverability
- Eliminates Mechanical Transmission → Increases user space; reduces energy transmission losses
Our Projects
Our distributed electric drive axle systems have been successfully implemented in city buses across Europe, the Middle East, Asia, and other regions. Incorporating advanced design concepts and control strategies, we prioritize the safety and reliability of our systems, delivering profitability for public transport vehicle manufacturers.
Hydrogen buses with 320 kW eaxles
Buses with the low-floor design
Airport shuttle bus with 14T eaxles
Pur electric buses with our eaxles
Contact Us
Get in touch with us by sending us an email, using the Whatsapp number below, or filling in the form below. We usually reply within 2 business days.
Email: contact@brogenevsolution.com
Respond within 1 business day
Whatsapp: +8619352173376
Business hours: 9 am to 6 pm, GMT+8, Mon. to Fri.
LinkedIn channel
Follow us for regular updates >
YouTube channel
Ev systems introduction & industry insights >
