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9
Mixture Designs to Optimize Pollution
Level and Temperature of Fuels
This case study is about a laboratory using Six Sigma’s dene-measure-
analyze-design-verify (DMADV) approach to design the compositions of
two fuel mixtures: Neo and Zeo.
Sections 9.1 and 9.2 give brief descriptions of the dene phase and the
measure phase, respectively. Section 9.3 illustrates the analyze phase with
detailed instructions for using Minitab
®
. The design and verify phases are
briey explained in Section 9.4.
9.1 Define Phase
The laboratory wishes to decide the components and their proportions for
two fuel mixtures: Neo and Zeo.
9.2 Measure Phase
The objectiv ...