The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2021
Filed:
Oct. 07, 2020
Applicant:
Aisan Kogyo Kabushiki Kaisha, Obu, JP;
Inventor:
Yuki Fujita, Gifu, JP;
Assignee:
AISAN KOGYO KABUSHIKI KAISHA, Obu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); B01D 53/04 (2006.01); F02M 25/08 (2006.01); F02M 35/10 (2006.01);
U.S. Cl.
CPC ...
F02D 41/004 (2013.01); B01D 53/0415 (2013.01); B01D 53/0446 (2013.01); B01D 53/0454 (2013.01); F02D 41/0045 (2013.01); F02M 25/0836 (2013.01); F02M 35/10222 (2013.01); B01D 2259/40003 (2013.01); B01D 2259/40086 (2013.01); B01D 2259/4516 (2013.01);
Abstract
An evaporated fuel treatment apparatus includes a canister, a purge passage, a purge pump, a purge valve, and a controller for executing purge control. The controller is configured to switch the purge valve to a closed state or an open state once, subsequently set a concentration sensing flag to ON, and then detect a purge concentration based on a pump downstream pressure or a pump differential pressure at a predetermined timing elapsed by a predetermined time from setting of the concentration sensing flag to ON.