Ngk Insulators, Inc.

Honda Motor Co., Ltd.

Atsuo Kondo

Jungo Kondo

Kenji Aoki

Osamu Mitomi

Takeshi Sakuma

Takashi Egami

Masahiro Tokuda

Masanobu Miki

Yasumasa Fujioka

Keizo Iwama

Masaaki Masuda

Tatsuya Okayama

Keiji Matsuhiro

Takashi Aoki

Yukio Miyairi

Minoru Imaeda

Yunie Izumi

Tetsuya Ejiri

Yuichi Iwata

Toshikatsu Kashiwaya

Soichiro Matsuzawa

Hidetaka Ozawa

Yoshinari Kozuka

Kenji Dosaka

Makoto Hattori

Tetsuhisa Abe

Akira Hamajima

Takenori Ichigi

Makoto Minakata

Kyohei Kato

Yukio Mizuno

Hirofumi Sakamoto

Takehide Shimoda

Shoji Tange

Norihiro Wakita

Kazuhiro Kondo

A pillar shaped honeycomb structure includes: a porous partition wall that defines a plurality of cells, the cells forming flow paths for a fluid, the cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. At least a part of surfaces of the partition walls has a surface layer, and the surface layer includes magnetic particles and has permeability.

Pillar shaped honeycomb structure, exhaust gas purifying device, exhaust system, and method for producing honeycomb structure

A particulate matter detection device of the present invention includes a plate-like element base material, and a pair of measurement electrodes arranged in the element base material, each of the measurement electrodes is a combteeth-like electrode including a plurality of planarly arranged combteeth portions, and a comb spine portion which connects the plurality of combteeth portions of each of the measurement electrodes to one another at one end of each of the plurality of combteeth portions, the combteeth portions of the measurement electrodes are arranged to engage with each other with a space being left therebetween, and the comb spine portion of at least one of the measurement electrodes is covered with a comb spine covering portion made of a dielectric material.

Particulate matter detection device

A particulate matter detection device includes a plate-like element base material including, on one surface thereof, a formed recess portion to collect a particulate matter; a pair of measurement electrodes arranged on the bottom surface side of the recess portion of the element base material; and a high-voltage dust collection electrode embedded in a wall which forms the recess portion of the element base material on the one surface side of the element base material from a position where the pair of measurement electrodes are arranged. An electric field is generated from the high-voltage dust collection electrode to the pair of measurement electrodes, to collect, on the bottom surface side of the recess portion, the particulate matter flowing along the element base material, and a change of electric characteristics between the pair of measurement electrodes is measured to detect the particulate matter collected on the recess portion.

A PM sensor is provided having high responsiveness and capable of long term detection. A PM sensor includes a sensor element that has particulate collection electrodes to which a particulate collection voltage for causing particulate matter contained in exhaust to adhere to a sensor element is applied, and measurement electrodes to which a measurement voltage for measuring an electrical characteristic of the sensor element is applied, in which, after a particulate collection voltage is applied to the particulate collection electrodes application of the particulate collection voltage is stopped in response to a predetermined condition being satisfied, the measurement voltage is applied to the measurement electrodes and the electrical characteristic of the sensor element is measured.

A particulate matter detection device () includes a first electrode () that includes a conductive section () and a dielectric () that covers the conductive section (), and a second electrode () that is disposed opposite to the first electrode () at an interval of 0.3 to 3.0 mm. Charged particulate matter contained in a fluid that passes through the space between the first electrode () and the second electrode (), or particulate matter that is contained in a fluid and charged by a discharge that occurs due to application of a voltage between the electrodes () and () is electrically adsorbed on at least one of the electrodes () and (), and the particulate matter adsorbed on the electrodes () and () is detected by measuring a change in electrical properties of the first electrode (), or a change in electrical properties of the electrodes () and ().

A tubular structure for fixing a particulate matter detection device including a tubular first holding tube having a fixing structure portion at a first end; and a tubular second holding tube having one end fixed to a second end so that the second holding tube is coaxial with the first holding tube. The particulate matter detection device is prolonged in one direction and having a detecting portion for particulate matter, with a takeout portion of a wiring line disposed in the tubular structure so that the detecting portion projects to the outside from the first end and so that the takeout portion is positioned in the second holding tube, and with the particulate matter detection device fixed to a pipe by the fixing structure portion so that the detecting portion is positioned in the pipe.

Tubular structure for fixing particulate matter detection device

A particulate matter detection device including a first electrode having one surface covered with a dielectric material; a second electrode which is disposed on the side of the one surface of the first electrode via a space where a gas including particulate matter flows and which performs one or both of the formation of a discharge and an electric field by a voltage applied between the first electrode and the second electrode; a pair of measurement electrodes disposed on the surface of the dielectric material so as to face each other; and a protective film disposed on the surfaces of the pair of measurement electrodes and having a volume resistivity of 10 &#x3a9;cm to 10&#x3a9;cm, where the variate of the electric properties between the pair of measurement electrodes is measured, and the amount of the collected particulate matter can be obtained.

A particulate matter detection device including a detection device main body which has one end provided with a through hole a pair of electrodes embedded in a wall through which the through hole is formed, and covered with a dielectric material; wires extending from the electrodes to the other end of the main body; and a ground electrode provided at a position sandwiched between the wires. The device can electrically adsorb, on the wall surface of the through hole, a charged particle in a fluid flowing into the through hole, or a particle charged by electric discharge caused in the through hole by applying a voltage across the pair of electrodes. The device can measure the changes of the electric properties of the wall through which the through hole is formed, thereby detecting particles adsorbed on the wall surface of the through hole.

Particulate matter detection device and method for manufacturing the same

A particulate matter detection device () includes a detection device body () extending in one direction and having at least one through-hole () that is formed at one end (), at least one pair of electrodes buried in the wall of the body () that defines the through-hole (), and covered with a dielectric, lines respectively extending from the pair of electrodes toward the other end (), a takeout lead terminal () of one electrode of the pair of electrodes disposed on the surface of the other end (), a takeout lead terminal () of the other electrode of the pair of electrodes between one end () and the other end (), and an electric wire () provided with an electric wire securing member () at its tip portion, and bonded to the takeout lead terminal () through the electric wire securing member ().

A device for detecting an accumulation amount of particulates is provided. The device has a filter for trapping particulates from a gas containing the particulates, a container for containing the filter, an upstream pipe provided on the upstream side of the container to lead the gas into the container, a downstream pipe provided on the downstream side of the container to lead the gas after passed through the filter, a transmitting antenna provided within the downstream pipe to transmit an electromagnetic wave having a frequency of 30 GHz or more but not exceeding 10 THz, and a receiving antenna provided within the upstream pipe to receive the electromagnetic wave. An amount of the particulates trapped in the filter is detected based on an intensity of the electromagnetic wave received by the receiving antenna.

Devices for detecting accumulation amount of particulates

A particulate matter detection deviceincludes a first electrodewhose one surface is covered with an inter-electrode dielectric material; a second electrodedisposed on the side of the one surface of the first electrode, to perform the discharge of electricity by a voltage applied between the first electrodeand the second electrode; and a pair of measurement electrodesdisposed on the surface of the inter-electrode dielectric materialso as to face each other; characteristic measurement meansfor measuring electric characteristics between the pair of measurement electrodesand; and particulate matter amount calculation meansfor obtaining the amount of the particulate mattercollected by the surface of the inter-electrode dielectric material, based on the change amount of the electric characteristics.

A device for detecting particulates includes: a filter; a filter container; an upstream pipe; a downstream pipe; an upstream detecting unit; and a downstream detecting unit. The upstream detecting unit has a branch flow route for receiving gas from the upstream pipe, a trapping portion, a transmitting portion for transmitting an electromagnetic wave to the trapping portion, and a receiving portion for receiving an electromagnetic wave from the trapping portion. The downstream detecting unit has a branch flow route for receiving gas from the downstream pipe, a trapping portion, a transmitting portion for transmitting an electromagnetic wave to the trapping portion, and a receiving portion for receiving an electromagnetic wave from the trapping portion. The amount of the particulates trapped in the filter is detected based on a difference between detection values of the mass of the particulates trapped in the upstream and downstream trapping portions.

A plasma generating electrode includes two types of plate-shaped unit electrodes of different polarities, the two types of unit electrodes of different polarities being hierarchically and alternately stacked at specific intervals, a discharge space for generating plasma being formed between the opposing unit electrodes, each of the unit electrodes of one polarity among the two types of unit electrodes of different polarities including a plate-shaped conductor exhibiting conductivity and a ceramic dielectric disposed to cover the conductor, the ceramic dielectric of the unit electrode of one polarity including a support protrusion for forming the discharge space for generating plasma between the opposing unit electrodes and at least a part of a space in which the unit electrode of the other polarity is disposed opposite to the unit electrode of one polarity and for supporting the unit electrode of one polarity, the support protrusion being integrally formed with the ceramic dielectric on at least one surface of the ceramic dielectric on at least one end of the ceramic dielectric in one direction.

Plasma generating electrode and plasma reactor

A particulate matter detection device includes a collection electrode that collects the particulate matter, a discharge electrode that allows a corona discharge to occur when a voltage is applied between the collection electrode and the discharge electrode, a measurement electrode, the impedance between the collection electrode and the measurement electrode changing when the collection electrode has collected the particulate matter, and a measurement section that detects a change in the impedance between the collection electrode and the measurement electrode, the particulate matter detection device detecting the particulate matter by charging the particulate matter contained in the gas by utilizing the corona discharge, collecting the charged particulate matter by the collection electrode by utilizing an electrostatic force, and detecting a change in the impedance between the collection electrode that has collected the particulate matter and the measurement electrode using the measurement section.

Particulate matter detection device and particulate matter detection method

A plasma generating electrode according to the invention includes at least two opposing plate-shaped unit electrodeseach having a rectangular surface and four end faces, and a holding memberwhich holds at least one (fixed end) of a pair of parallel ends (pair of ends) of four ends of the unit electrodecorresponding to the four end faces, at least one of the opposing unit electrodesbeing a conductive-film-containing electrodeincluding a ceramic bodyand a conductive filmand a distance 'a' (mm) from an edge of the conductive filmto an edge of the ceramic bodyon the other pair of parallel ends (other pair of ends) of the four ends of the conductive-film-containing electrodeadjacent to the pair of ends and a thickness 'c' (mm) of the ceramic bodysatisfying a relationship &#x201c;(c/2)&#x2266;a&#x2266;5c&#x201d;. The plasma generating electrodeis effectively prevented from breaking due to thermal shock.

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Okazaki, Japan

Atsuo Kondo