nox {gss}

NOx in Engine Exhaust

Description

Data from an experiment in which a single-cylinder engine was run with ethanol to see how the NOx concentration in the exhaust depended on the compression ratio and the equivalence ratio.

Usage

data(nox)

Format

A data frame containing 88 observations on the following variables.

nox	NOx concentration in exhaust.
comp	Compression ratio.
equi	Equivalence ratio.

Source

Brinkman, N. D. (1981), Ethanol fuel – a single-cylinder engine study of efficiency and exhaust emissions. SAE Transactions, 90, 1410–1424.

References

Cleveland, W. S. and Devlin, S. J. (1988), Locally weighted regression: An approach to regression analysis by local fitting. Journal of the American Statistical Association, 83, 596–610.

Breiman, L. (1991), The pi method for estimating multivariate functions from noisy data. Technometrics, 33, 125–160.