文档介绍：SURFACE REAF.
VEHICLE J1829 OCT2002
MENDED Issued 1987-06
PRACTICE Reaffirmed 2002-10
Superseding J1829 DEC1997
Stoichiometric Air-Fuel Ratios of Automotive Fuels
1. Scope—The mass of air required to burn a unit mass of fuel with no excess of oxygen or fuel left over is
known as the stoichiometric air-fuel ratio. This ratio varies appreciably over the wide range of fuels—
gasolines, diesel fuels, and alternative fuels—that might be considered for use in automotive engines.
Although performance of engines operating on different fuels may pared at the same air-fuel ratio or
same fuel-air ratio, it is more appropriate pare operation at the same equivalence ratio, for which a
knowledge of stoichiometric air-fuel ratio is a prerequisite.
This SAE mended Practice summarizes putation of stoichiometric air-fuel ratios from a
knowledge of position of air and the position of the fuel without a need for any information
on the molecular weight of the fuel.
2. References
Applicable Publications—The following publications form a part of this specification to the extent specified
herein.
. Holden and . Martin, “Pure and Applied Chemistry,” 56, 663 (1984).
. Standard Atmosphere, 1976, National Oceanic and Atmospheric Administration; National
Aeronautics and Space Administration; United States Air Force, Washington, DC, October 1976.
. Pierson, Chemtech, May 1976, p. 332.
. Horsley, “Azeotropic Data III,” Advances in Chemistry Series 116, American Chemical Society,
Washington.
. Zimmerman and I. Lavine, “Industrial Research Services Psychrometric Tables and Charts,” 1945.
A. Wexler, “Humidity and Moisture—Measurement and Control in Science and Industry,” Vol. 1, p. 97,
Reinhold Publishing Corp., New York, NY, 1965.
SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely
voluntary, and its