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. 09, 2020
Filed:
Feb. 17, 2016
Isuzu Motors Limited, Tokyo, JP;
Tadashi Uchiyama, Kamakura, JP;
Satoshi Hanawa, Fujisawa, JP;
ISUZU MOTORS LIMITED, Tokyo, JP;
Abstract
There is provided a first PM sensor provided upstream of a filter and including a first sensor filter having a plurality of first cells collecting PM in the exhaust gas to be introduced into the filter, and a first pair of electrodes arranged to face each other with the first cell interposed therebetween, a second PM sensor provided downstream of the filter and including a second sensor filter having a plurality of second cells collecting PM in the exhaust gas discharged from the filter, and a second pair of electrodes arranged to face each other with the second cell interposed therebetween, and a filter state determination unit for acquiring an efficiency of collecting the PM in the filter, based on a first electrostatic capacitance between the first pair of electrodes and a second electrostatic capacitance between the second pair of electrodes.