The function of the front bumper of a car
The front bumper of a car serves as the first line of defense in the event of a frontal collision. Its main functions include absorbing impact forces, ensuring the safety of the vehicle body and pedestrians, and optimizing aerodynamic performance. The following are the specific functions:
Impact force absorption
The front bumper disperses the impact force in low-speed collisions through crumpling structures or energy-absorbing materials (such as plastic composites), reducing direct damage to the vehicle body.
Pedestrian protection
Modern front bumper designs focus on pedestrian safety, reducing the risk of injury to pedestrians in the event of a collision through deformable areas and cushioning materials.
Aerodynamic optimization
Some models have integrated air ducts or spoilers on the front bumper, which can improve the airflow distribution of the vehicle at high speeds and enhance stability.
Material and Maintenance
Common materials include plastic, carbon fiber composite materials, etc., which feature lightweight and easy repair. Car owners need to regularly check the integrity of their bumpers to avoid affecting the protective effect due to aging or damage.
Faults of the front bumper of a car are commonly caused by loose screws, collision damage or material aging. The repair or replacement plan should be selected based on the specific problem . The following is a detailed analysis:
Common types of faults
Youdaoplaceholder0 Loose or cracked
Reasons: Loose screws, damaged clips, deformation at the connection due to collision or rubber wear.
Handling: Tighten the screws, replace the clips or reinstall the bumper. If the vehicle becomes loose due to a collision, it is necessary to check whether the vehicle body structure is damaged.
Youdaoplaceholder0 upturned corners or damaged
Cause: Minor collision, curbstone scratches or improper installation of non-original accessories.
Treatment: Slight corner lifting can be repaired with spray painting. The bumper is severely damaged and needs to be replaced.
Youdaoplaceholder0 sensor/line fault
Cause: Internal circuit breakage or sensor displacement due to collision.
Handling: Professional inspection and replacement of damaged parts are required.
Repair and replacement suggestions
Minor damage: Use bumper repair agent to fill the gaps or apply local paint.
Moderate damage: Replace local components (such as clips, screws).
Severe damage: Replace the entire bumper, making sure it matches the vehicle body.
Insurance claims process
Report the case immediately after ensuring safety.
The insurance company conducts an investigation and assessment of the damage to confirm the repair plan.
Choose a 4S store or a professional repair point for handling.
preventive measure
Regularly check the tightness of the screws.
Avoid low-speed collisions or scratches on obstacles.
When replacing bumpers, give priority to choosing original factory parts.
Whether a damaged front bumper of a car can pass the annual inspection mainly depends on the severity of the damage . Minor damage usually does not affect, but severe damage needs to be repaired before it can pass.
The inspection standards for bumpers during annual inspections
Youdaoplaceholder0 Vehicle annual inspection aims to ensure safety performance and compliance. The integrity of the bumper, as an important component of the vehicle body, is one of the inspection items. If the damage causes obvious depressions, protrusions or cracks, it may be regarded as a safety hazard, thereby affecting the annual inspection results.
The distinction between minor damage and severe damage
Youdaoplaceholder0 Minor damage : such as fine scratches or slight local deformation, which do not affect the overall flatness and safety performance, and can pass the annual inspection in most areas.
Youdaoplaceholder0 Severe damage : If the bumper is severely cracked, deformed or detached over a large area, affecting the vehicle structure or pedestrian protection function, it will not pass the annual inspection and needs to be repaired first.
Regional differences and suggestions
The implementation standards may vary slightly in different regions. It is recommended to consult the local vehicle management office or inspection station in advance. To pass the annual inspection smoothly, if the bumper is severely damaged, it should be repaired in time. If you are not sure, you can conduct a pre-check first or consult a professional.
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