Title:
蒸発燃料処理装置
Document Type and Number:
Japanese Patent JP6989459
Kind Code:
B2
Abstract:
To provide an evaporation fuel treatment device which can determine the presence or absence of the clogging of a passage at an upstream side of a purge pump by easy control.SOLUTION: This evaporation fuel treatment device 1 has a passage clogging determination part 21 for determining the presence or absence of the clogging of a pump upstream-side passage 22 including a vapor passage 16 and an upstream-side passage 12a in a purge passage 12. When an engine ENG is stopped, or purge control is stopped, the passage clogging determination part 21 brings an atmosphere cutoff valve 19 into a valve-closing state, drives a purge pump 13, and determines the presence or absence of the clogging of the pump upstream-side passage 22 on the basis of a rise situation of pressure in the pump upstream-side passage 22 when applying positive pressure to the pump upstream-side passage 22.SELECTED DRAWING: Figure 1
More Like This:
| JP5450213 | Canister |
| JP5002544 | Fuel supply device |
Inventors:
Daisaku Asanuma
Application Number:
JP2018151193A
Publication Date:
January 05, 2022
Filing Date:
August 10, 2018
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F02M25/08
Domestic Patent References:
| JP2017203415A | ||||
| JP2016089791A | ||||
| JP2016217359A | ||||
| JP10090107A |
Attorney, Agent or Firm:
Cosmos International Patent and Trademark Office
Previous Patent: Rotor of rotary electric machine
Next Patent: Semiconductor devices and their manufacturing methods
Next Patent: Semiconductor devices and their manufacturing methods