Title:
排気再循環制御装置
Document Type and Number:
Japanese Patent JP7359721
Kind Code:
B2
Abstract:
To provide an exhaust emission recirculation control device which improves the learning accuracy of a variation with respect to a fundamental flow rate characteristic of an EGR valve, and can accurately control an EGR amount.SOLUTION: An exhaust emission recirculation control device comprises a learning control part for performing learning control for learning a variation caused by an individual difference of an exhaust emission recirculation valve, and a variation caused by deterioration with respect to a relationship between a drive amount of the exhaust emission recirculation valve and a flow rate of exhaust emission which passes the exhaust emission recirculation valve, being a fundamental flow rate characteristic for use in the control of the exhaust emission recirculation valve, and the learning control part starts the learning control after learning a zero-point drive amount being a drive amount at which a flow passage of the exhaust emission recirculation valve starts to open at each driving cycle of a vehicle.SELECTED DRAWING: Figure 5
Inventors:
Hiroki Maekawa
Gaku Ito
Gaku Ito
Application Number:
JP2020033023A
Publication Date:
October 11, 2023
Filing Date:
February 28, 2020
Export Citation:
Assignee:
Subaru corporation
International Classes:
F02M26/53; F02M26/47; F02M26/48
Domestic Patent References:
| JP200182260A | ||||
| JP2001173521A | ||||
| JP20024950A | ||||
| JP2004108329A | ||||
| JP2007247445A | ||||
| JP2009185732A | ||||
| JP201443790A | ||||
| JP201517569A | ||||
| JP20192396A | ||||
| JP202051326A |
Attorney, Agent or Firm:
Patent Attorney Ota Patent Office
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