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:
Mar. 19, 2019
Filed:
Dec. 19, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Aisan Kogyo Kabushiki Kaisha, Obu-shi, Aichi-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
AISAN KOGYO KABUSHIKI KAISHA, Obu-shi, JP;
Abstract
An evaporated fuel processing apparatus is provided with a blocking valve disposed in a vapor passage. The blocking valve has: a valve whose stroke amount is adjusted by a stepping motor; and a relief valve being opened regardless of the stroke amount when tank pressure of a fuel tank is greater than or equal to a predetermined pressure to allow communication between the fuel tank and a canister. The evaporated fuel processing apparatus is provided with a controller configured (i) to control the stepping motor to move the valve in a valve opening direction while prohibiting a valve opening position learning process when the tank pressure is greater than or equal to the predetermined pressure and (ii) to allow the valve opening position learning process when the tank pressure is less than the predetermined pressure.