| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and apparatus for creating a more accurate map in a shorter time to determine a threshold value where trouble occurs in an internal combustion engine. SOLUTION: The present invention relates to the method and apparatus for three dimensional calibration of an on-board diagnostics system. In one embodiment, the present invention is a method for calibrating an on-board diagnostic system for an automobile including the steps of generating a three dimensional surface 30 corresponding to an internal combustion engine operating under a first condition, generating a three dimensional surface 32 corresponding to the internal combustion engine operating under a second condition, and generating a three dimensional threshold surface 34 using the three dimensional surface 30 corresponding to the internal combustion engine operating under the first condition and the three dimensional surface 32 corresponding to the internal combustion engine operating under the second condition. COPYRIGHT: (C)2010,JPO&INPIT
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