| 摘要 |
Evaluation of a diagnosis function for diagnosing a transient response of a variable valve mechanism for an engine valve is executed in a manner such that a desired value on the variable valve mechanism is calculated based on testing signals of a rotating speed and a water temperature, that a controlled variable signal for testing indicating a state in which the transient response of the variable valve mechanism is delayed, is generated, and that the diagnostic function for the transient response is evaluated based on whether or not the delay of the transient response is diagnosed on the basis of a correlation between the desired value and a controlled variable signal.
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