Browse Standards J1829_201503
Current REVISED 2015-03-17

Stoichiometric Air-Fuel Ratios of Automotive Fuels J1829_201503

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 be compared at the same air-fuel ratio or same fuel-air ratio, it is more appropriate to compare operation at the same equivalence ratio, for which a knowledge of stoichiometric air-fuel ratio is a prerequisite.
This SAE Recommended Practice summarizes the computation of stoichiometric air-fuel ratios from a knowledge of a composition of air and the elemental composition of the fuel without a need for any information on the molecular weight of the fuel.
J1829_201503
2015-03-17
Latest
Revised
J1829_200210
2002-10-31
Historical
Reaffirmed
J1829_199712
1997-12-01
Historical
Reaffirmed
J1829_199205
1997-12-01
Historical
Revised
J1829_198706
1987-06-01
Historical
Issued

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