Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Toyota Motor Engineering & Manufacturing North America, Inc.

Denso Corpora Tion

The Ritsumeikan Trust

Hiroki Nishijima

Tatsuhiro Hashida

Keiichiro Aoki

Yoshiharu Miyake

Haruki Kondo

Debasish Banerjee

Shinji Ikeda

Makoto Ito

Satoshi Nakamura

Masayuki Tamura

Hirofumi Suzuki

Makoto Nakae

Xiaoshi Su

Tetsuya Kato

Atsushi Murai

Takeshi Hirabayashi

Toyoharu Kaneko

Kei Sugiura

Jyunya Murai

Toru Takeuchi

Daiki Kuboyama

Yoshinobu Yoshihara

Yasufumi Nakanishi

Yasushi Hirata

Tooru Takeuchi

Takaya Suzuki

Fumitaka Kato

Miwako Shionoya

The present disclosure provides a radio wave transmissive metallic member having an excellent metallic luster. The present disclosure relates to a metallic member and a method for manufacturing the same. The metallic member comprises a substrate body, an ion-exchange resin layer formed on the substrate body, and a metal particle layer formed on the ion-exchange resin layer, wherein metal particles having a high aspect ratio are longitudinally oriented with respect to the ion-exchange resin layer and the substrate body.

Radio wave transmissive metallic member and method for manufacturing the same

A multi-layered material is provided for shielding low-frequency electromagnetic waves. The multi-layered material may include a plurality of repeating sets of alternating layers of materials. Each repeating set of alternating layers may include an electrically conductive layer and a magnetic layer including a continuous layer of a magnetic material. The multi-layered material is generally configured to shield electromagnetic waves having a frequency of less than about 1 MHz. In various aspects, the electrically conductive layer may include a conductive metal layer, or a two-dimensional transitional metal carbide. The multi-layered material may be provided as a thin film, or can be shaped or sized as flakes for use with a resin composite that is deposited via a spray application technique.

Multi-layer electomagnetic shielding composite

The present disclosure provides a gas sensor element comprising a porous protective layer with improved water repellency upon continuously water pouring, which is a gas sensor element comprising:

Gas sensor element

A gas sensor element with suppressed response deterioration even when poisoned with S when fuel or exhaust gas contains ethanol and the ethanol content is high. The element includes a detection portion, which includes a solid electrolyte layer having a pair of electrodes on opposite sides thereof, a shielding layer defining a measurement target gas space with a porous diffusive resistance layer, and a reference gas space protective layer; a heat-generating portion stacked on the detection portion; and a porous protective layer surrounding the detection portion and heat-generating portion. The porous protective layer includes a first porous protective layer surrounding at least the porous diffusive resistance layer, and a second porous protective layer surrounding the first porous protective layer, the detection portion and the heat-generating portion. The first porous protective layer contains none of La, Ca, or Mg, while the second porous protective layer contains at least one of them.

A control apparatus for an internal combustion engine detects an amount of particulate matter contained in an exhaust gas in an exhaust passage, according to an electrical property across electrodes of a particulate matter sensor disposed in the exhaust passage of the internal combustion engine. The term 'electrical property' here refers to a property that changes with the amount of particulate matter deposited, for example, a current value of when a predetermined voltage is applied. After the internal combustion engine is started and detection of the amount of the particulate matter is completed, an element section of the particulate matter sensor is set to a predetermined temperature range. The particulate matter deposited on the element section is thereby burned and removed. The control apparatus maintains the element section in the predetermined temperature range after burning and removing the particulate matter until the internal combustion engine stops.

Control apparatus for internal combustion engine

A gas sensor element having a porous protective layer with excellent water repellency. Provided is a gas sensor element having a detection portion, which has a stack of a solid electrolyte body having a pair of electrodes on opposite sides thereof and a heat generating body including a heat generating source, and a porous protective layer formed around the detection portion. The porous protective layer has thermal conductivity &#x3bb; in the range of 0.2 to 5 W/mK, and has &#x3bb;Cp&#x3c1;, which is the product of the thermal conductivity &#x3bb;(W/mK), density &#x3c1;(g/m), and specific heat Cp(J/gK), in the range of 5.3&#xd7;10to 2.1&#xd7;10WJ/mK.

A control device for an exhaust gas sensor includes first means for estimating a temperature of a sensor element in accordance with impedance of a solid electrolyte, and second means for estimating the temperature of the sensor element in accordance with resistance of a heater. A first element temperature according to impedance of the sensor element in a predetermined detection timing is detected by the first means, and a second element temperature according to resistance of a heater of the sensor element in the predetermined detection timing is detected by the second means. The control device corrects the temperature of the sensor element that is estimated in accordance with heater resistance by the second means in accordance with a difference between the first element temperature and the second element temperature.

Control device for exhaust gas sensor

An object of the present invention is to reliably detect clogging in a cover even during a period corresponding to a dead zone of a detection apparatus. A PM sensor includes an element section, an element temperature detection section, a heater, and an element cover. An ECU detects clogging in the element cover based on a difference between an element temperature and an exhaust temperature when the exhaust temperature rises. Furthermore, the ECU detects clogging in the element cover based on temperature rising characteristics of the element section observed when the element section is heated by the heater. Thus, even during the period corresponding to the dead zone of the PM sensor, clogging in the element cover can be reliably detected, thus improving the reliability of the sensor.

PM detection apparatus

The invention relates to a malfunction diagnosis device for an exhaust gas purification catalyst of an engine. The device calculates, on the basis of a parameter of the engine other than an output value of a NOx concentration sensor, (a) an estimated NO concentration of the exhaust gas and expected to flow out from the catalyst and (b) an estimated particular component concentration of the exhaust gas and expected to flow out from the catalyst. The device calculates an expected output value such that the expected output value calculated when the influence parameter value is a first value is smaller than the expected output value calculated when the influence parameter value is a second value, the expected output value being an output value which is expected to be output from the sensor when the exhaust gas, which includes NO having the expected NO concentration and the particular component having the expected particular component concentration, reaches the sensor. The device diagnoses that a malfunction occurs in the catalyst when the output value of the sensor is equal to or larger than a malfunction diagnosis threshold defined on the basis of the expected output value.

Malfunction diagnosis device for exhaust gas purification device of internal combustion engine

A particulate matter sensor comprises an insulating body and a pair of electrodes disposed apart form each other on a main surface of the insulating body. The insulating body includes an insulating portion being equal to or higher than the height of the pair of the electrodes in a direction perpendicular to the main surface, formed on the part where the pair of the electrodes are. In one of the methods for manufacturing the particulate matter sensor, first, an electrode pattern composed of a material for the pair of the electrodes is formed on a body material composing the insulating body, and a mask, having identical pattern of the electrode pattern and composed of material which vaporizes at a temperature equal to or lower than a temperature that the electrode pattern is sintered, is formed on the electrode pattern. A thin film of the material composing the insulating portion is formed, and the electrode pattern and the thin film is sintered to form the electrodes and the insulating portion.

Particulate matter sensor and method for manufacturing particulate matter sensor

According to the invention, a particulate matter sensor is installed in an exhaust passage of an internal-combustion engine. A control unit for this internal-combustion engine detects a particulate amount in an exhaust gas through the exhaust passage in response to an output from the particulate matter sensor. Further, the control unit for the internal-combustion engine forms a particulate layer on electrode surfaces of the particulate matter sensor by applying a particulate capturing voltage between the electrodes during a first period. Further, the control unit maintains the formed particulate layer during a second period. It is noted here that the phrase 'maintain the formed particulate layer' includes the meanings 'maintaining the formed particulate layer as it is' and &#x201c;inhibiting control to remove the particulate layer&#x201d;.

Control unit for internal-combustion engine

A porous structure including a pair of electrodes disposed in a flow direction of exhaust gas and a solid electrolyte interposed between the electrodes is arranged in an exhaust passage of an internal combustion engine, and the amount of a particulate matter in exhaust gas is specified based on a potential difference generated between the electrodes.

Particulate matter amount detection system

A control device for an internal combustion engine includes a SCR system disposed in an exhaust passage and a particulate matter sensor disposed downstream of the SCR system. The control device applies a particulate matter trapping voltage to the particulate matter sensor, and acquires an output of the particulate matter sensor at a first timing after the start of application of the particulate matter trapping voltage. The control device executes predetermined control in accordance with the output. If a second timing at which an integrated operating time period of the internal combustion engine in a predetermined operating state in which urea-related substances discharged to downstream of the SCR system increase reaches a reference time period after starting application of the particulate matter trapping voltage is earlier than the first timing, the control device stops the predetermined control.

Control device for internal combustion engine

An internal combustion engine includes an SCR system disposed on an exhaust passage and a particulate matter sensor disposed downstream of the SCR system, the particulate matter sensor for producing an output that corresponds to an amount of particulate matter deposited on an element section. A control apparatus for the internal combustion engine includes: means for detecting a condition of the element section being deposited with a urea-related substance; and means for controlling to bring a temperature of the element section to a first temperature range when the condition of being deposited with the urea-related substance is detected. The first temperature range is higher than a temperature at which the urea-related substance vaporizes and lower than a temperature at which the particulate matter burns. This prevents the urea-related substance from being deposited on an electrode of the particulate matter sensor and limits variations in an output of the particulate matter sensor.

By raising a temperature of an element portion of a particulate matter sensor () that is arranged in an exhaust passage () of an internal combustion engine (), a heat generation amount that results from the combustion of particulate matters is detected, during a removal treatment of removing, through combustion, particulate matters that are deposited on the element portion. Besides, an amount of particulate matters that are deposited on the element portion of the particulate matter sensor () is detected on the basis of an output of the particulate matter sensor (), before the start of this removal treatment. On the other hand, an amount of particulate matters that are deposited on the element portion before the start of the removal treatment is detected in accordance with the heat generation amount. Furthermore, it is determined whether or not there is an abnormality in the particulate matter sensor (), on the basis of a difference between a first particulate matter amount that is detected on the basis of the output of the particulate matter sensor () and a second particulate matter amount that is detected on the basis of the heat generation amount.

Growing community of inventors

Suntou-gun, Japan

Hiroki Nishijima