Title:
蒸発燃料処理装置
Document Type and Number:
Japanese Patent JP7147377
Kind Code:
B2
Abstract:
A purge control unit opens the purge control valve to supply, as purge gas to an intake passage, the evaporative fuel together with air in response to a predetermined purge request. An air-fuel ratio detection unit detects an air-fuel ratio of the internal combustion engine. A concentration learning unit estimates a fuel concentration in the purge gas based on a change in the air-fuel ratio when the purge control unit causes the purge gas to be supplied to the intake passage and to perform a fuel concentration learning to update a concentration learning value, which is a learning value of the fuel concentration in the purge gas, based on the estimated fuel concentration. An injection control unit corrects a fuel injection amount based on the concentration learning value in a period in which the concentration learning unit performs the fuel concentration learning in the lean combustion operation.
Inventors:
Ryota Sasaki
Application Number:
JP2018160891A
Publication Date:
October 05, 2022
Filing Date:
August 29, 2018
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D45/00; F02D41/02; F02D41/14; F02D43/00; F02M25/08
Domestic Patent References:
| JP2002013437A | ||||
| JP2018123767A | ||||
| JP11166455A | ||||
| JP2017106371A | ||||
| JP60047837A | ||||
| JP8240138A |
Foreign References:
| WO2010089887A1 |
Attorney, Agent or Firm:
Yamada Tsuyoshi
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita