Life estimation device for engine and machine having heat source

摘要: A life estimation device which numerically measures the damage to a machine such as an engine accurately estimate, of without requiring skill. load map (B) two-dimensional distribution operation parameters is made. In accordance with weighted integration time αi·ki at each level (Bi) (B), actual δ=Σαi·ki for certain lapse τ calculated. By operating beforehand, correspondence relation L2 between magnitude δ and H predetermined. The H1 corresponding calculated δ1 determined in predetermined outputted estimated engine.