Title:
ENGINE DEVICE
Document Type and Number:
Japanese Patent JP2021179199
Kind Code:
A
Abstract:
To suppress disturbance of an air-fuel ratio of an engine in restarting purge (first purge or second purge) after interruption of the second purge.SOLUTION: A purge control valve is controlled on the basis of a required purge rate in performing purge for supplying a vaporized fuel gas to an intake pipe. When the vaporized fuel gas is not supplied to the intake pipe, a counter is counted up, when the first purge for supplying the vaporized fuel gas to the intake pipe through a first purge passage is performed, the counter is counted down, when the second purge for supplying the vaporized fuel gas to the intake pipe through a second purge passage is performed, the counter is retained, and when the purge is restarted after the interruption, the required purge rate is determined so that it becomes smaller in accordance with increase of the counter.SELECTED DRAWING: Figure 14
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Inventors:
IDOGAWA MASANAO
UCHIDA TAKAHIRO
KACHI MASAHIRO
GO REIKO
YAMAMOTO HIROKATSU
UCHIDA TAKAHIRO
KACHI MASAHIRO
GO REIKO
YAMAMOTO HIROKATSU
Application Number:
JP2020085149A
Publication Date:
November 18, 2021
Filing Date:
May 14, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02M25/08
Attorney, Agent or Firm:
Aitec International Patent Office