Title:
エンジン装置
Document Type and Number:
Japanese Patent JP7409230
Kind Code:
B2
Abstract:
To curb a reduction in frequency of updating a deviation learning value related to a deviation of a detected air-fuel ratio.SOLUTION: In operating an engine, an engine device updates a deviation learning value related to a deviation of a detected air-fuel ratio using a processed air-fuel ratio when predetermined conditions including the following two conditions are met: a condition that the processed air-fuel ratio, obtained through a smoothing process where a change in an air-fuel ratio detected with an exhaust sensor is smoothed, is within a first predetermined range including a reference value; and a condition that a processed air-fuel ratio change rate, a variation of the processed air-fuel ratio per unit time, is within a second predetermined range including a value of zero. Followability of the processed air-fuel ratio with respect to the detected air-fuel ratio is higher in the smoothing process that the detected air-fuel ratio undergoes while second control is in execution than in the smoothing process while first control is in execution.SELECTED DRAWING: Figure 7
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Inventors:
Takeshi Motoko
Application Number:
JP2020090970A
Publication Date:
January 09, 2024
Filing Date:
May 25, 2020
Export Citation:
Assignee:
Toyota Motor Corporation
International Classes:
F02D41/14
Domestic Patent References:
| JP2016031041A | ||||
| JP2005054770A | ||||
| JP59037245A | ||||
| JP2010209829A | ||||
| JP2020067068A | ||||
| JP2007303415A |
Attorney, Agent or Firm:
Patent Attorney Corporation ITEC International Patent Office
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