The moisture concentration inside cylinder gases changes according to
the cylinder pressure : at high cylinder pressures, the moisture conce
ntration is undetectable, while the moisture level increases as the cy
linder pressure decreases. This phenomenon is traditionally explained
by the dilution theory, which predicts a linear relationship between c
ylinder pressure and moisture concentration. However, experimentally t
his phenomenon has never been observed. The focus of this talk lies up
on the development of a theoretical model describing the moisture inte
raction with a solid surface at various high cylinder pressures.