某车型暖风机调速电阻熔断器失效问题分析

Analysis of the Failure of the Speed Regulating Resistance Fuse of a Car Type Heater

暖风机调速电阻的功能是通过调节风机转速大小来控制向车内输送冷/热气流的强度。公司某车型暖风机调速电阻换件量较大,经分析主要是熔断器失效。为了解决这个问题,从熔断器的工作原理出发,分析出主要失效模式及影响原因,制定有效措施,解决该问题。

The function of air blower is adjusted the fan rotation speed,controlled the strength of the conveying cold/hot air flow inside the car. The quantity of variable speed resistance of a certain model of the company has changed a lot,the analysis mainly is the fuse failure.In order to solve this problem,this article embarks from the working principle of fuse,analyzes the reasons of the main failure modes and effects,formulate effective measures to solve the problem.