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:
Apr. 03, 2018
Filed:
Nov. 29, 2016
Aisan Kogyo Kabushiki Kaisha, Obu-shi, Aichi-ken, JP;
Mamoru Yoshioka, Nagoya, JP;
Shinji Kawai, Gifu, JP;
Makoto Fukui, Nagoya, JP;
Kasumi Mishima, Toyoake, JP;
Hirokazu Tashita, Miyoshi, JP;
Tsutomu Kuniyoshi, Tokai, JP;
Kensuke Hiroi, Nagoya, JP;
AISAN KOBYO KABUSHIKI KAISHA, Obu, JP;
Abstract
A blow-by gas returning (BGV) apparatus includes a blow-by gas storage unit, a throttle device placed in an intake passage, a BGV passage for allowing blow-by gas to flow to the intake passage downstream of the throttle device for recirculation, and a PCV valve for regulating a flow rate of blow-by gas. An abnormality diagnosis device includes an air flow meter to detect an intake amount in the intake passage upstream of the throttle device and an electronic control unit (ECU) for diagnosis. The ECU controls the PCV valve to a first opening degree and a second opening degree when an engine is during deceleration fuel cut, and diagnoses abnormality of the BGV apparatus based on a first intake amount detected under control with the first opening degree and a second intake amount detected under control with the second opening degree.