Correcting engine tests for humidity

D. B. Brooks
1929 Bureau of Standards Journal of Research  
Data obtained on a 6-cylinder automobile engine indicate a loss of engine power with increasing humidity proportional to the volumetric loss of oxygen content of the atmosphere. It is shown that power and fuel consumption may be corrected by subtracting observed water vapor pressure from atmospheric pressure and using the result in place of barometric pressure in the usual correction formula.
doi:10.6028/jres.003.044 fatcat:n7ek7dd73je63m7xeph3oh5may