Title:
エンジンシステム
Document Type and Number:
Japanese Patent JP6528791
Kind Code:
B2
Abstract:
An engine system includes: an engine including a plurality of cylinders; an EGR passage including EGR branch passages each configured to recirculate part of exhaust gas into an intake port of a corresponding one of the plurality of cylinders; an EGR valve configured to be capable of adjusting an EGR flow rate; and an ECU configured to control the EGR valve. When an engine rotation fluctuation amount in an EGR OFF state is less than a first determination value, and when the engine rotation fluctuation amount in an EGR ON state is greater than a second determination value, the ECU imposes an EGR restriction for restricting the EGR flow rate. When it is determined that the engine rotation fluctuation amount in the EGR ON state is greater than a third determination value less than the second determination value after the EGR restriction is imposed, the ECU continues the EGR restriction.
Inventors:
Yamada Eiji
Keisuke Nagakura
Keisuke Nagakura
Application Number:
JP2017012760A
Publication Date:
June 12, 2019
Filing Date:
January 27, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02M26/74; F02M26/20; F02M35/10
Domestic Patent References:
| JP2015117642A | ||||
| JP11326136A | ||||
| JP11311151A | ||||
| JP2013002299A |
Foreign References:
| WO2011036740A1 |
Attorney, Agent or Firm:
Fukami patent office