Coaxial Electric Axle for Buses

Our coaxial electric axle for buses integrates the electric motor, drive shaft, and drive axle into a single unit. This highly integrated e-powertrain system effectively maximizes chassis space, reduces weight, and simplifies battery layout, enhancing e-powertrain system transmission efficiency, reducing energy consumption, and increasing driving range for the bus. The central motor integration design also improves the reliability of the motor and key drivetrain components. Additionally, it supports low-floor, high-passability designs for urban buses.

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Email: contact@brogenevsolution.com

Leading the Way in Innovative Electric Powertrain Technologies

In the electrification of buses, simply replacing the engine with an electric motor while maintaining the traditional central drive system of fuel buses can lead to issues such as excessive weight, large size, and low efficiency. Our coaxial electric axle solution integrates the motor and axle housing along the same axis, with leading-edge integration technology. This design offers the smallest chassis footprint and the lightest weight of the industry. Additionally, the motor is symmetrically arranged, ensuring a more balanced sprung mass distribution. Compared to parallel-axis integrated electric drive axles, this design has a lesser impact on the suspension load conditions.

5000 m²

Laboratory Area

42 Sets

Testing Equipment

16 Sets

CAE Analysis Software

36 Sets

Material Analysis Equipment

Strengthen Your Electric Bus Design With Our Coaxial Electric Axles

The coaxial electric axle for buses represents the third generation of e-powertrain solutions for commercial vehicles. It has already been mass-produced and successfully deployed in public transport fleets. This solution enables bus manufacturers to develop electric buses that offer higher passenger capacity, improved energy efficiency, and lower maintenance costs, helping them stay competitive in the rapidly evolving EV industry.

1st Generation e-Powertrain System

Same structure as the drivetrain of fuel-powered vehicles: use the electric motor to replace the engine.

Short development time but high manufacturing cost.
Takes up a lot of space in the X-direction, making battery placement difficult.
Placing the battery up front creates an axle load imbalance, making the front heavier.
The drive system isn't very light.

3rd Generation e-Powertrain System

The electric motor and axle housing are integrated along the same axis to save more chassis space for improved battery layout.

Changing the position of the center of gravity to address impact issues.
High integration: compact structure, efficient transmission.
Fully release the X-direction space under the floor, conducive to battery layout.
The NVH performance is better.
The overall performance is superior.

We Offer Best Features

Highly-Integrated Transmission System
Weight reduced by over 100 kg; passenger capacity increased by over 30%
Quiet Driving Experience
Cabin noise under 70 dB, enhanced driving comfort
100,000 km Maintenance Intervals
Reduced lifecycle costs
100% Counter Torque
100% counter torque; energy consumption reduced by 15%; range extended significantly
Symmetrical Layout
Symmetrical layout balances unsprung mass, reduces suspension load impact
Enhanced Safety
IP68; main reducer oil temperature monitoring; gear speed monitoring (optional)

Technical Parameters

Model	6PE	8PE	8PE-B	13PE
Rated Axle Load	3500 kg	5500 kg	5500 kg	8500 kg
Gear Ratio	16.5	14.57	14.57	19.89
Motor Voltage	360/540 V	540 V	540 V	540 V
Motor Rated Power	60 kW	90 kW	60 kW	80 kW
Motor Peak Power	130 kW	160 kW	140 kW	150 kW
Motor Rated Torque	145 N.m	200 N.m	160 N.m	230 N.m
Motor Peak Torque	350 N.m	500 N.m	360 N/m	650 N.m
Motor Rated Speed	4000 rpm	4300 rpm	3580 rpm	3400 rpm
Motor Peak Torque	12000 rpm	9000 rpm	12000 rpm	10000 rpm