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:
Sep. 11, 2018
Filed:
Jun. 29, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Keiichiro Aoki, Shizuoka-ken, JP;
Yoshihisa Serizawa, Shizuoka-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
An exhaust sensorcomprises a sensor cell, a voltage application circuit, a current detection circuitand a concentration calculating part. The current detection circuit detects a first current flowing through the sensor cell when fuel cut control is being performed in the internal combustion engine and a predetermined voltage is applied from the voltage application circuit to the sensor cell, and detect a second current flowing through the sensor cell when normal control is being performed in the internal combustion engine and the predetermined voltage is applied from the voltage application circuit to the sensor cell. The concentration calculating part is configured to calculate the concentration higher with respect to the second current when the first current is relatively low compared with when the first current is relatively high.