New Device Design and Performance Test on Gas Generator in Automobile Airbag

An new test device to test gas generator performance in automobile airbag is built. It is made up of inflator jar, sliding track, lifting device and data acquisition system. This system can produce an analog signal which is similar to the impact signal of automobile crash. For get suitable data of acceleration and the duration of impact, lots of experiments have been done. When lifting height of inflator jar is 280mm, acceleration peak value is from 80.5g to 90.2g and dash duration is from 6ms to 8ms. They can meet require to detonate gas generator. There were five groups gas generators from SHANXI Jinheng auto-parts Co., LTD was tested and changing track of pressure and acceleration can be known clearly. Then forty-four gas generators contrast test were done separately in China and in USA. Test results from our designed device were very similar to USA device. It was confirmed that the device designed to test gas generator performance by ourselves was successful.