Method of estimating inertia moment of engine, method of estimating engine load, and method of and apparatus for controlling engine

摘要

An inertia-related engine speed fluctuation is computed when the engine is rotated without ignition. A load-related engine speed fluctuation is computed when the engine is rotated with ignition and combustion. The inertia-related engine speed fluctuation is indicative of an inertia moment that is variable in accordance with equipments connected with the engine. The load-related engine speed fluctuation is indicative of an engine load. When estimating the engine load, the inertia-related engine speed fluctuation is considered for removing an influence of the inertia moment on the engine load. The estimated engine load is used for controlling the engine. It is possible to consider the inertia moment into an engine control.