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:
Jun. 26, 2018
Filed:
Feb. 25, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A processor may perform a purging process, which may introduce fuel vapor adsorbed by a canister into an intake passage. The processor may identify clogging of a purge passage based on a decrease amount of the pressure in the canister that results from execution of the purging process. The processor may open an isolation valve when the pressure in a fuel tank is less than or equal to a first pressure, which is less than an atmospheric pressure, and close the isolation valve when the pressure in the fuel tank is greater than or equal to a second pressure, which is greater than the first pressure and less than the atmospheric pressure. The processor may disable the purging process at least in a period from when the processor closes the isolation valve to when a prescribed time has elapsed from the closing of the isolation valve.