GOST 8226-2022 PDF

Full title and description

GOST 8226-2022 — "Fuel for engines. Research method for determination of octane number" (ГОСТ 8226-2022, Топливо для двигателей. Исследовательский метод определения октанового числа). The standard defines a laboratory research method for determining the octane number (a characteristic of knock resistance) of spark‑ignition engine fuels and their components using a standardized single‑cylinder, four‑stroke carburetted engine with variable compression and a conventional octane number scale.

Abstract

This standard specifies the apparatus, test engine, calibration procedures, test sequence, calculation method and reporting requirements for the research octane number (RON) determination. It is intended to ensure reproducible RON results for fuel quality control, formulation and regulatory purposes by using reference fuels and defined test conditions on a standardized test engine.

General information

• Status: Active / In force (Действует).
• Publication date: Published / came into effect 01 July 2023 (approved by Rosstandart 26 December 2022).
• Publisher: Approved/published under the authority of Rosstandart (Federal Agency on Technical Regulating and Metrology); issued as a GOST interstate technical standard.
• ICS / categories: 75.160.20 — Liquid fuels; Petroleum and related technologies (Fuels).
• Edition / version: Designation year 2022 (GOST 8226-2022). Replaces earlier editions (including GOST 8226-2015 and earlier GOST 8226-82).
• Number of pages: 40 pages (typical published text / PDF).

Scope

The scope covers the laboratory research method for determination of the octane number (research octane number, RON) of automotive gasoline and gasoline components intended for spark‑ignition engines. It specifies required test equipment (standardized single‑cylinder, four‑stroke engine with variable compression), reference fuels and calibration procedures, stepwise test procedure, calculation of octane number on the conventional scale, and the form of the test report. The method is intended for fuel testing laboratories, quality control and regulatory monitoring.

Key topics and requirements

• Definition and application of the research octane number (RON) and its relation to knock resistance.
• Specification of the standardized single‑cylinder, four‑stroke carburettor engine with variable compression used for RON tests.
• Requirements for reference (calibration) fuels and procedure for constructing the conditional octane scale.
• Detailed test procedure: conditioning, test sequence, engine settings, measurement points and averaging rules.
• Calculation method for octane number and rules for correcting results to standard conditions.
• Precision, repeatability and reproducibility requirements and instructions for reporting test results.
• Sampling and sample preparation notes and cross‑references to related sampling standards.

Typical use and users

Primary users are fuel testing and certification laboratories, refinery quality control departments, fuel formulators, automotive and engine manufacturers, national and regional regulators, and research institutions concerned with fuel performance and emissions. The standard is used for batch quality control, R&D on fuel formulations, regulatory compliance testing and inter‑laboratory comparisons.

Related standards

Typical related documents and predecessors include GOST 8226-2015 and earlier GOST 8226-82 (previous versions), GOST 2517 (sampling of petroleum products), GOST 1.0‑2015 and GOST 1.2‑2015 (rules on interstate standards), and other petroleum testing and laboratory practice standards referenced in the text.

Keywords

octane number, research octane number (RON), fuel testing, spark‑ignition, single‑cylinder test engine, calibration fuels, fuel quality, knock resistance, GOST 8226-2022.

FAQ

Q: What is this standard?

A: GOST 8226-2022 is the Russian/Interstate standard that specifies the laboratory research method for determining the octane number (RON) of gasoline and gasoline components using a standardized single‑cylinder variable‑compression engine.

Q: What does it cover?

A: It covers test equipment and engine requirements, reference fuel calibration, detailed test procedure, calculation and reporting of octane number results, and precision/validation rules for the method.

Q: Who typically uses it?

A: Fuel testing laboratories, refineries and fuel formulators, automotive and engine manufacturers, regulatory bodies and research organizations concerned with fuel quality and engine performance.

Q: Is it current or superseded?

A: As of its publication/canonical date it is current (active). GOST 8226-2022 supersedes earlier editions such as GOST 8226-2015 and prior versions. Check national registries for the latest national adoption or amendments.

Q: Is it part of a series?

A: It is part of the family of petroleum and fuel testing standards (ICS 75.160.20) and references other GOST documents on sampling, laboratory practice and standardization; it replaces earlier GOST variants of the same method.

Q: What are the key keywords?

A: Octane number, research method, RON, spark‑ignition, standardized test engine, reference fuels, fuel quality, knock resistance.