Fuel Specifications

Basics

• This page aims to lay out the various Specifications for fuels
• This is done for several reasons
  • One, using “bad fuel” may take a long time, or certain conditions (Cold (Fuel Gelling), Water/Humidity, Long Storage Times (Sludge Formation, Oxidation, etc) in order to cause a noticeable impact
    • Because of this one could THINK a fuel is “good” only for it to be a market failure causing all kinds of bad press later etc
  • SECONDLY it aids in Engine and Fuel System Design as you can properly understand things like Material Compatibility Issues for things like Gaskets , O-Rings , and Flexible Hoses
  • Finally certain markets such as Aviation, Military, Maratime, and Power Plants have particular standards for your fuel to even be considered to be used
    • Being able to compete on various contracts or development projects may be of use for funding etc

Specifications

General

• Flash Point + Freezing Point
• Vapor Pressure
• Specific Energy (Both per liter and per kg)
• PH
• Material Compatibility
• Oxidative Stability
• Viscosity (At STP )
• Fuel Lubricity / Lubricity
• Ash Content
• Likeliness to form a Varnish/Sludge
  • Related to Oxidative Stability as well as Cloud Point if i remember correctly (Re: Oil Winterization / Degumming )

Relevant to [[Spark Ignition Engines

• Fuel Octane Rating

Relevant to Compression Ignition Engines

• Cetane Rating
• Gell Point / Cloud Point