Engine control device

The engine control device addresses excessive ignition timing learning by performing peripheral learning within predetermined ranges and reflection rates, ensuring accurate ignition timing adjustments and enhanced engine performance.

JP7856063B2Active Publication Date: 2026-05-11TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TOYOTA JIDOSHA KK
Filing Date
2023-07-04
Publication Date
2026-05-11

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Abstract

To suppress an excessive learning in peripheral learning.SOLUTION: A control device for an engine performs a peripheral learning in which, when learning ignition timing for an engine operating point, for an ignition timing map showing the relationship between engine operating points and ignition timing, which is used when setting the engine ignition timing, the ignition timing for the operating point related to the learning is updated using a learned value, and the ignition timing for operating points surrounding the operating point related to the learning is updated using a value corresponding to the learned value. At this time, peripheral learning is performed only on the ignition timing of operating points that are within a range of a predetermined value from the learned value among the ignition timing of operating points surrounding the operating point related to the learning.SELECTED DRAWING: Figure 2
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