RECIPROCATING INTERNAL COMBUSTION ENGINES - EXHAUST EMISSION MEASUREMENT - PART 9: TEST CYCLES AND TEST PROCEDURES FOR TEST BED MEASUREMENT OF EXHAUST GAS SMOKE EMISSIONS FROM COMPRESSION IGNITION ENGINES OPERATING UNDER TRANSIENT CONDITIONS

This document outlines the standardized procedures for measuring exhaust smoke emissions from compression-ignition engines operating under transient conditions. It defines specific test cycles and operational sequences required for engine emission test bench evaluations during dynamic load changes. The text details the methodological framework necessary to ensure consistent and repeatable measurements of particulate matter in the exhaust stream. It covers the definition of engine operating points, the transition protocols between different load regimes, and the specific instrumentation requirements for accurate data acquisition. The content serves as a technical guide for conducting comparative tests on reciprocating internal combustion engines where transient performance is critical. By adhering to these established guidelines, laboratories can ensure their experimental data aligns with international methodologies regarding emission characterization under varying operational states without deviation from the prescribed test parameters.