What is ISO 8178-1 about?
ISO 8178 ‑ 1 is the first part of European standard which specifies fuels whose use is recommended for performing the exhaust emission test cycles. ISO 8178-1 provides an engine’s emissions characteristics which through use of proper weighting factors and test cycles can be used as an indication of that engine’s emission levels under various applications and for different fuels.
ISO 8178 ‑ 1 applies to reciprocating internal combustion engines for mobile, transportable and stationary installations excluding engines for vehicles primarily designed for road use.