WK91436 - New Test Method for Determination of Derived Octane Number of Gasoline or other Fuels—Using a Constant Volume Combustion Chamber Method

Work Item

ASTM WK91436

New Test Method for Determination of Derived Octane Number of Gasoline or other Fuels—Using a Constant Volume Combustion Chamber Method

1. Scope

This document specifies a test method for the quantitative determination of the derived octane number of gasoline fuels intended for use in spark ignition engines. The method utilizes a constant volume combustion chamber with fuel injection into heated and compressed air. A dynamic pressure wave is produced from the combustion of the products. An equation is given to calculate the derived octane number from the pressure response over time. This standard is applicable to automotive gasoline fuels and is also applicable to fuels of non-petroleum origin, such as blends of fuel containing oxygenated material and special motor fuels.

Keywords

Octane; Gasoline

Rationale

By using a smaller, quicker and safer instrument that correlates to RON, MON and AKI, the lab will be able to safe time for testing gasoline as well as get an even precise result or indication of the gasoline that is being produced/delivered and not use the CFR engine.

Details

Developed by Subcommittee: D02.01

Committee: D02

Staff Manager: Alyson Fick

Work Item Status

Date Initiated: 06-28-2024

Technical Contact: Connor Douglas

Item: 000

Ballot:

Status: