Eight Configuration Types of Heavy Duty Truck E-Axle
Global trends in the development of electric drive systems for new energy vehicles indicate a clear shift towards the integration and unification of powertrain components. Leading automotive manufacturers, including Tesla, General Motors, FAW, Dongfeng, and Geely, are icnreasingly focusing on consolidating key elements such as the drive motor, motor controller, and reducer into integrated electric drive assemblies as a strategic priority for future development. This trend is particularly relevant to the electric drive axles used in heavy-duty trucks, offering significant advantages in terms of enhanced system efficiency, reduced size and weight, lower costs, and streamlined mass production.Â
Here’re eight main configuration types for the heavy duty truck e-axle.
1. Single motor, 2-speed parallel axis configuration
Features:
- 4-shaft, 3-stage reduction, AMT
- The 2-speed gearbox balances low-speed, high torque for starting and maximum motor speed at top vehicle speeds.
Issues:
- Power interruption occurs during gear shifting with the AMT
2. Single motor, 3-speed parallel axis configuration
Features:
- 3-shaft, 3-stage reduction, AMT
- The 3-speed gearbox balances low-speed, high torque for starting and maximum motor speed at top vehicle speeds.
Issues:
- Power interruption occurs during gear shifting with the AMT
3. Single motor, 4-speed parallel axis configuration
Features:
- 5-shaft, 4-stage reduction, AMT
- The 4-speed electric drive axle completely resolves the conflict between motor torque and speed.
Issues:
- The transmission mechanism is overly complex.
- Power interruption still occurs during gear shifting.
4. Dual motor, single-speed parallel axis configuration
Features:
- Dual 4-shaft, 3-stage reduction, shared differential
- Resolves the power interruption issue
Issues:
- Narrow high-efficiency range and poor adaptability to varying operating conditions
5. Dual motor, 2-speed parallel axis configuration
Features:
- Dual 3-shaft, 3-stage reduction, shared mechanical differential
- By replacing one large motor with two smaller motors, this configuration reduces energy consumption and saves costs
6. Dual motor, dual 2-speed parallel axis configuration
Features:
- Dual 4-shaft, 3-stage reduction, shared mechanical differential
- Resolves the power interruption issue during AMT gear shifting
7. Distributed single-speed parallel axis configuration
Features:
- Dual 4-shaft, 3-stage reduction, no mechanical differential
- Improves transmission efficiency
- Saves chassis space
- Enhances vehicle performance and stability
8. Distributed wheel-end reduction configuration
Features:
- Dual 3-stage reduction, no mechanical differential
- Improves transmission efficiency
- Saves chassis space
- Enhances vehicle performance and stability
Our Distributed Heavy-Duty Truck E-Axle
Our distributed electric axle for heavy-duty truck features a powerful dual-motor design, delivering up to 360 kW of output power and over 50,000 N.m of torque. With its distributed drive architecture, the e-axle for trucks ensures uninterrupted power during gear shifts while adding an extra layer of safety redundancy. Designed for demanding applications, it is compatible with a wide range of (hybrid) electric vehicles, such as trucks, buses, coaches, tractors, trailers, trains, etc., offering a robust, cost-effective, and high-performance solution for OEMs.
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