·AQSIQ announces the results of the investigation on the defects of the new Sagitar automobile coupling rod type rear axle longitudinal arm fracture problem

On August 14, the General Administration of Quality Supervision, Inspection and Quarantine initiated the investigation of the defects of the FAW Volkswagen New Sagitar automobile coupling rod type rear axle longitudinal arm fracture problem, organized the AQSIQ Defective Product Management Center and the relevant domestic research institutes and test and inspection institutions to FAW-Volkswagen New The sagitar automobile coupled rod type rear axle longitudinal arm fracture problem was investigated to evaluate the effectiveness of the recall measures for the installation of the liner. As of August 31, 2015, more than 70 experts and engineers have been organized. After 1 year, 4468 cases of effective complaint information were sorted out. More than 30,000 recalled owners have been implemented, and 463 owners have returned to the telephone. There were 22 vehicles, and 457 cases of failures with linings were collected and analyzed (including 382 cases of longitudinal arm deformation and 75 cases of fracture cases), and 37 cases of failure cases after installing linings (including longitudinal arm deformation cases 34) For example, 3 cases of fracture cases), organization experts and producers conducted technical exchanges 21 times, and carried out 47 143 defect engineering analysis tests. Based on the above work, the conclusions of the investigation are as follows:
First, the new Sagitar automobile coupling rod type rear axle longitudinal arm anti-deformation ability is relatively lower than that of the similar structure rear axle. In some use cases (by collision or scraping), the longitudinal arm will be deformed (in the collection of 457 longitudinal In the case of arm deformation and fracture, 312 cases were caused by severe collisions, accounting for 68.3%; 54 cases were caused by non-severe collision or scraping, accounting for 11.8%; the rest of the cases were difficult to confirm due to incomplete information), and with the amount of deformation The increase in fatigue life is markedly reduced. After the deformation of the trailing arm of the rear axle of some vehicles, the appearance is not easy to detect, and the owner does not actively inspect or repair the rear axle of the vehicle, and the original maintenance process of the producer is difficult to effectively detect the deformation of the trailing arm. Through engineering test analysis and expert demonstration, the new sagitar car equipped with the coupled rod rear axle has safety hazards caused by the longitudinal arm fracture, which constitutes a defect.
Second, the recall measures to install the lining plate improve the anti-deformation ability of the trailing arm longitudinal arm and reduce the possibility of longitudinal arm deformation. (The monitoring shows that the longitudinal arm deformation and fracture cases are significantly reduced after the lining is added, and the collection has been collected. The 37 cases were all vehicles with different degrees of collision).
If the rear axle of the vehicle is deformed and the longitudinal arm is deformed, the owner or unauthorized repairing enterprise fails to find out in time, even after the longitudinal arm body is broken, the installed lining can keep the vehicle running for a certain mileage.
The manufacturer adopts the rear axle longitudinal arm deformation detection procedure and special tools, which helps to find the rear axle longitudinal arm deformation and replace it according to the degree of deformation, which will reduce the possibility of the longitudinal arm fracture.
3. In the producer recall measures, after the longitudinal arm body is broken, the installed lining will produce “continuous warning noise”. The test results show that after the lining is added, if the longitudinal arm body breaks, it is bad. When driving on the road, it can be identified as “continuous warning noise”, but it is not easy to detect when driving on good roads, and can not effectively serve as a warning. There is a vehicle that cannot be found in time after the main body of the rear axle is broken, and the lining is broken. Loss of control risk.
The General Administration of Quality Supervision, Inspection and Quarantine requires FAW-Volkswagen Automotive Co., Ltd. to fulfill the responsibility of product quality and safety, and continue to improve the recall completion rate in a highly responsible attitude towards consumers, and continue to strengthen the monitoring of vehicles with linings and take further steps. Measures to eliminate security risks.

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