The reasons and solutions for the high low-speed noise of new energy vehicles are as follows:
reason
1. Motor noise: It may be caused by issues with motor design, manufacturing processes, or materials.
2. Brake system noise: If the brake pads are severely worn or unbalanced, it may cause the vehicle to produce noise when driving at low speeds.
3. Suspension system issues: Worn or loose parts of the suspension system may cause noise during vehicle operation.
4. Tire issues: Insufficient tire pressure, severe wear, or imbalance can all cause the vehicle to produce noise when driving at low speeds.
5. Body structure issues: Some parts of the body structure may have defects, causing the vehicle to produce noise during driving.
6. Reminder Sound: Some new energy vehicles will emit a warning sound when driving at low speeds, such as the buzzer used by Toyota Corolla Hybrid to alert pedestrians, resulting in a buzzing sound.
resolvent
1. Regarding motor noise: Optimize motor design and manufacturing processes to reduce noise.
2. Regarding brake system noise: Check and repair the brake system, such as replacing severely worn brake pads or adjusting the balance of the brake system.
3. Regarding suspension system issues: Check the suspension system components and replace worn or loose parts in a timely manner.
4. Regarding tire issues: Maintain sufficient tire pressure, regularly replace severely worn tires, and ensure tire balance.
5. Regarding the issue of vehicle body structure: Adjust the entire vehicle body structure to eliminate noise.
6. Regarding the prompt sound: It can be covered with sound insulation material on the buzzer, or the resistance value can be changed, or a modification kit can be used to weaken or eliminate the sound.
Other precautions
Before making any changes, it is recommended that car owners carefully review the vehicle manual and fully consider the potential impact of the changes on the vehicle's safety performance and warranty terms.