ASTM D5798 - 17 - Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark- Ignition Engines

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ASTM D5798 - 17

Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark- Ignition Engines

Status : Current   Published : July 2017

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HARDCOPY



1.1 This specification covers the requirements for automotive fuel blends of ethanol and gasoline for use in ground vehicles equipped with ethanol fuel blend flexible-fuel spark-ignition engines. Fuel produced to this specification contains 51 % to 83 % by volume ethanol. This fuel is for use in flexible-fuel vehicles and is sometimes referred to at retail as “Ethanol Flex-Fuel.” Appendix X1 discusses the significance of the properties specified.

1.2 The vapor pressure of ethanol fuel blends is varied for seasonal climatic changes. Vapor pressure is increased at lower temperatures to ensure adequate flexible-fuel vehicle operability. Ethanol content and selection of hydrocarbon blendstock are adjusted by the blender to meet these vapor pressure requirements.

1.3 This specification formerly covered Fuel Ethanol (Ed70-Ed85) for Automotive Spark-Ignition Engines, also known commercially as E85. The nomenclature “fuel ethanol” has been changed to “ethanol fuel blends” to distinguish this product from denatured fuel ethanol Specification D4806. To facilitate blending of ethanol fuel blends that meet seasonal vapor pressure requirements, a new lower minimum ethanol content has been established.

1.4 The United States government has established various programs for alternative fuels. Many of the definitions of alternative fuel used by these programs may be more restrictive than the requirements of this specification. See 4.1.2.1 for additional information on alternative fuels containing ethanol.

1.5 The values stated in SI units are to be regarded as the standard.

1.5.1  Exception—The values given in parentheses are for information only.

1.6 The following safety hazard caveat pertains only to the test method portion, 8.1.8, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.7  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.




Standard NumberASTM D5798 - 17
TitleStandard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark- Ignition Engines
StatusCurrent
Publication Date01 July 2017
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Acidity Alcohol Automotive spark-ignition engine fuel Chloride Copper corrosion E85 Ether Ethanol fuel blends for flexible-fuel automotive spark-ignition engines Flexible-fuel Hydrocarbon Hydrocarbon blendstock Inorganic chloride Lead MTBE Oxidation stability Oxygenates PHinfe/inf Phosphorus Solvent washed gum content Sulfur Vapor pressure Volatility Water
ICS75.160.20
PublisherASTM
FormatA4
DeliveryYes
Pages10
File Size309 KB
Price£40.00


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