Title:
故障検知装置
Document Type and Number:
Japanese Patent JP7239505
Kind Code:
B2
Abstract:
To provide a practical failure detection device capable of accurately detecting failure of an intake pressure sensor by using a simple configuration in which cost is suppressed so as to enable appropriate application to a vehicle such as a motorcycle.SOLUTION: In a failure detection device S, estimation pressure that is compared with measurement pressure PB by a failure detection section 120 is calculated from reference estimation pressure that is a value obtained by detecting beforehand pressure on the downstream side of an intake pipe 10 in response to speed NE of an internal combustion engine 1 and an opening TH of a valve element 12. As the opening TH when the estimation pressure is calculated, a corrected opening obtained by correcting the opening TH in response to control amount of drive control of an actuator 17 that moves a bypass valve 16 opening/closing a bypass passage 15 is used.SELECTED DRAWING: Figure 1
Inventors:
Yuki Tashiro
Application Number:
JP2020010884A
Publication Date:
March 14, 2023
Filing Date:
January 27, 2020
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
F02D45/00; F02D41/22
Domestic Patent References:
| JP1208545A | ||||
| JP2003307152A | ||||
| JP3054341A | ||||
| JP2015045284A |
Attorney, Agent or Firm:
Kawamoto Manabu
Mikio Kuruyama
Nobuyoshi Tahara
Mikio Kuruyama
Nobuyoshi Tahara
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