Gasoline and Gasoline-Oxygenate Blends (as defined in this regulation). – Shall meet the most recent version of ASTM D “Standard. D –ASTM Gasoline Standard. ○ Covers gasoline and its blends with oxygenates for spark-ignition engines. – vol% ethanol (US. Buy ASTM D Standard Specification for Automotive Spark-Ignition Engine Fuel from SAI Global.
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The composition of both unleaded and leaded fuel is limited by economic, legal, and technical consideration, but their properties, including volatility, are defined by this specification.
Test Method D provides a procedure for determining oxygenate concentration in mass percent. It provides for a variation of the volatility and water tolerance of automotive fuel in accordance with seasonal climatic changes at the locality where the fuel is used.
This specification does not apply to fuels that contain an oxygenate as the primary component, such as Fuel Methanol M Reformulated spark-ignition engine fuel is required in some areas to lower emissions from automotive vehicles, and its characteristics are described in the research report on reformulated spark-ignition engine fuel.
F Since DI is an index and has no units, the standard temperature conversion from U. Historical Version s – view previous versions of standard.
Link to Active This link will always route to the current Active version of the standard. The significance of each of the properties of this specification is shown in Appendix X1.
For a specified limit expressed as an integer, and the right-most digit is non-zero, the right-most digit is significant without a decimal point being specified. The specification is under continuous review, which can result in revisions based on changes in fuel, automotive requirements, or test methods, or a combination thereof.
Many of the values shown in Table 1 were originally developed using U. However, in addition to the legal requirements, reformulated spark-ignition engine fuel should meet the performance requirements as well.
Standard Specification for Automotive Spark-Ignition Engine Fuel
For the period May 1 through Sept. The following equation is to be used to make the conversion: Refer to Appendix X3 for discussions of EPA rules relating to fuel volatility, lead and phosphorous contents, deposit control additive certification, and use of oxygenates in blends with unleaded gasoline.
The spark-ignition engine fuels covered here are gasoline and its blends with oxygenates, such as alcohols and ethers, and not fuels that contain an oxygenate as the primary component, such as fuel methanol M Appendix X4 provides a procedure for calculating the mass oxygen content of a fuel using measured oxygenate type, oxygenate concentration in volume percent, and measured density or relative density of the fuel.
This specification neither necessarily includes all types of fuels that are satisfactory for automotive vehicles, nor necessarily excludes fuels that can perform unsatisfactorily under certain operating conditions or in certain equipment. For a specification limit expressed as an integer, a trailing zero is significant only if the decimal point is specified.
Referenced Documents purchase separately The documents listed below are referenced d814 the subject standard aztm are not provided as part of the standard.
Test Method D also includes procedures for calculating mass oxygen content and oxygenate concentration in volume percent. This specification describes the various characteristics and requirements of automotive fuels for use over a wide range axtm operating conditions in ground vehicles equipped with spark-ignition engines. A0 Standards Related Products 1. Variation of the antiknock index with seasonal climatic changes and altitude is discussed in Appendix X1.
The concentrations and types of oxygenates are not specifically limited in this specification. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
This convention applies to specified limits in Tables 1, 3, and Table X8.
Standard – Standard Specification for Automotive Spark-Ignition Engine Fuel ASTM D –
Consequently, the type of fuel under consideration must first be identified in order to select applicable tests. In many countries, regulatory authorities having jurisdiction have set laws and regulations that limit the concentration of oxygenates and certain other compounds found in spark-ignition engine fuel. H 2 Test Method D also includes procedures for calculating mass oxygen content and oxygenate concentration in volume percent.
This abstract is a brief wstm of the referenced standard. A0 Standards Related Products.
The concentrations and types of oxygenates are not specifically limited in this specification. In the United States, oxygenate types and concentrations are limited to those approved asstm the U. Note 2—Many of the values shown in Table 1 were originally developed using U. As a result, conversion of the SI values will sometimes differ slightly from the U.