A Quality Control Technique for Correlating Exhaust Gas Analysis Systems
770138
02/01/1977
- Event
- Content
- A simple, inexpensive, critical flow blender has been developed for filling a tedlar bag with controllable concentrations of HC, NOx, CO2, and CO gases at levels encountered in automobile emissions testing. According to a daily schedule, a technician takes the bag to all analyzer sites in the laboratory for analysis. The concentrations indicated by each site are compared to the overall averages.The results are stored in a computerized data base from which control charts, statistical analyses, and interpretations of significant differences among test sites can be made.The precision, accuracy, and statistical interpretations of the data are discussed.
- Pages
- 20
- Citation
- Don Paulsell, C., and Keller, J., "A Quality Control Technique for Correlating Exhaust Gas Analysis Systems," SAE Technical Paper 770138, 1977, https://doi.org/10.4271/770138.