Title:
エンジン装置
Document Type and Number:
Japanese Patent JP7247955
Kind Code:
B2
Abstract:
A fuel injection valve is controlled by setting a required injection amount using a required load factor of an engine and a purge correction amount. A purge control valve is controlled using a driving duty based on a required purge ratio when a purge of supplying the evaporated fuel gas to an intake pipe is being executed. During execution of the purge, the purge concentration-related value is learned based on an air-fuel ratio deviation that is a deviation of an air-fuel ratio from a required air-fuel ratio. The certainty of the purge concentration-related value is estimated using a first counter that reflects a number of times of learning of the purge concentration-related value during a first purge and that does not reflect a number of times of learning of the purge concentration-related value during a second purge.
Inventors:
Well side honest
Takahiro Uchida
Masahiro Kachi
Reiko Sato
Hirokatsu Yamamoto
Takahiro Uchida
Masahiro Kachi
Reiko Sato
Hirokatsu Yamamoto
Application Number:
JP2020090134A
Publication Date:
March 29, 2023
Filing Date:
May 22, 2020
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02M25/08; F02D41/14
Domestic Patent References:
| JP2016200123A | ||||
| JP2017125422A | ||||
| JP2018062924A | ||||
| JP2018178939A | ||||
| JP2019052561A | ||||
| JP2020033933A |
Foreign References:
| US20160305352 |
Attorney, Agent or Firm:
Patent Attorney Corporation ITEC International Patent Office
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