ISO 17507-2:2025Published

Natural gas — Calculation of methane number of gaseous fuels for reciprocating internal combustion engines — Part 2: PKI method

Gaz naturel — Calcul de l'indice de méthane des combustibles gazeux pour les moteurs alternatifs à combustion interne — Partie 2: Méthode PKI

Abstract / scope

This document specifies the PKI method for the calculation of the methane number of a gaseous fuel, using the composition of the gas as sole input for the calculation.

This document applies to natural gas (and biomethane) and their admixtures with hydrogen.