Method for determining ignition timing of internal combustion engine, involves calculating ignition timing for cycle of combustion of engine, and using ignition timing value as input value in iteration process by using iterative algorithm

摘要

The method involves calculating ignition timing values (30) for a cycle of combustion of an internal combustion engine (1, 2a, 2b). The calculated ignition timing value is used as an input value in an iteration process (21) by using a physical iterative algorithm (20). A set of values, which describes a physical state of the engine, is determined (12). The determined values are used as input of the physical iterative algorithm, where credibility of the ignition timing value depends on the input values used by the physical iterative algorithm.