Application Research On FMEA And FTA In Quality Improvement Of A Automobile Company

With the growing of fierce automotive industry competition, the quality of automobilebecomes a more and more important factor when consumers choose to buy cars. Quality canbe said as the base of automotive vehicle business. A automobile company was founded in1998, it has the world’s leading model, advanced technology, good quality and comprehensiveafter-sales service,it wins the dealers and consumers’ trust and has a leading position indomestic market. However in recent years, along with the increasing requirements ofconsumers, growing number of local automobile parts suppliers, cost reducing of variousparts and automobile, as well as the shorter design cycle of new car models, more and morequality problems came out. One of most important issue the A automobile company face withis how to maintain good market quality conditions today. Nowadays Automobile company hasto solve the customer complaints rapidly, response to market quickly, ensure the of qualitystability of new models and mass production models.This paper studies the defective products of A automobile company collected from themarket and the dealing methods of them.Firstly it proposed the research topic,described itsresearch status, purpose and significance. Secondly it discussed the status of A automobilecompany quality management system, including A automobile company current situation andgeneral process of market quality solving issue, it pointed out the problems of the currentsystem and find it very necessary to use quality control tools. Thirdly it described the basicprinciples and general procedures of FMEA(Failure Mode and Effects Analysis) and FTA(Fault Tree Analysis) methods, also made use of the methods in A automobile company’s realworking conditions, the main parameters were calibrated. Then it took the application ofFMEA and FTA methods in A automobile company as an example, it illustrated the way ofsorting importance of project using FMEA and the way of building failure mode databaseusing FTA. In the application of power window switch, it improved the RPN value,reducedthe risk of failure, established a part defects library. Cases shows that the use of FMEA andFTA methods is significant for improving quality management, decreasing warranty costs,responding quickly to market and customer needs. A automobile company provides areference model to other automobile company.