Honda Motor Co., Ltd.

Jfe Steel Corporation

Nippon Telegraph and Telephone Corporation

Yusuke Yoshimura

Masao Yuga

Atsushi Aratake

Kenichiro Eguchi

Yuichi Kamo

Hisatoshi Kasahara

Masato Shigenaga

Takuya Kurokawa

Shuichi Yanagi

Suguru Oguchi

Tomoya Tokunaga

Yuta Ikeguchi

Takashi Adachi

Hiroki Ota

Yutaka Ishikawa

Shunsuke Sasaki

Yuya Tachibanada

Tomoyuki Noguchi

Hisashi Ishikawa

Masayuki Sadakiyo

Kazuki Fujimura

Satoshi Kono

Hisahiro Kato

Masaaki Takamatsu

Hideaki Yamashita

Provided is duplex stainless steel which has high strength and high toughness and can be subjected to hot working during manufacturing processes, the duplex stainless steel having a predetermined chemical composition and a microstructure containing an austenite phase in a volume fraction of 20% to 70% and a ferrite phase in a volume fraction of 30% to 80%, and mechanical properties such that a yield strength is 862 MPa or more and an absorption energy in a Charpy impact test at −10° C., vE, is 40 J or more.

Duplex stainless steel, seamless steel pipe or tube, and a method of manufacturing the duplex stainless steel

A vehicle control system includes a plurality of slave ECUs, and a core ECU including a gateway function for relaying data communication among the plurality of slave ECUs and between the plurality of slave ECUs and an external apparatus. The vehicle control system accepts operation requests from a plurality of systems that makes a request for an operation to an operating unit equipped in a vehicle and performing an operation based on an operation request. The operation requests from the plurality of systems include at least a request from the external apparatus or a request from a function added to the core ECU by the external apparatus. When operation requests from the plurality of systems are accepted, the core ECU performs arbitration for the operation requests from the plurality of systems and transmits an arbitration result to at least one of the plurality of slave ECUs.

Vehicle control system, vehicle, and control method

The invention is intended to provide a duplex stainless steel and a method for manufacturing same. A duplex stainless steel pipe is also provided. A duplex stainless steel of the present invention has a specific composition, and has a microstructure containing an austenitic phase and a ferrite phase. The duplex stainless steel satisfies the following contents for C, Si, Mn, Cr, Mo, Ni, N, Cu, and W in the formula (1) below, and has a yield strength YS of 655 MPa or more, and an absorption energy vEof 40 J or more as measured by a Charpy impact test at a test temperature of −10° C.0.55[% C]−0.056[% Si]+0.018[% Mn]−0.020[% Cr]−0.087[% Mo]+0.16[% Ni]+0.28[% N]−0.506[% Cu]−0.035[% W]+[% Cu*F]≤0.94  (1)

Duplex stainless steel and method for manufacturing same, and duplex stainless steel pipe

In an audio spot formation device D including a speaker unitand a support standthat supports the speaker unit, the speaker unitincludes a plurality of parametric speakersandthat divide a sound wave into a carrier wave and a sideband wave and radiate the carrier wave and the sideband wave, and a speaker disposition unitin which the plurality of speakersandare disposed, the speaker disposition unitis attached to the support standat a support unit P, at least one of a height of the support stand, an angle of attachment of the speaker disposition unitat the support unit P and a direction of at least one parametric speaker of the plurality of parametric speakersandis adjustable, and a position at which an audio spot is formed is adjusted via the adjustment.

Audio spot forming device

An audio spot forming system (S) is an audio spot forming system which transmits an alert sound to a vehicle traveling on a road, the audio spot forming system including a first parametric speaker () configured to emit a sideband wave, and a second parametric speaker () configured to emit a carrier wave, in which the sideband wave and the carrier wave are caused to intersect with each other on the road to form an audio spot.

Audio spot system and audio spot forming method

An in-vehicle electronic system comprises a core ECU (Electronic Control Unit) mounted in a vehicle and a plurality of slave ECUs that is capable of communicating with the core ECU through an in-vehicle communication network, wherein the core ECU is configured to manage a current time while a main power source of the vehicle is in an off state and manage an activation time of each of the plurality of slave ECUs in a sleep state with a management table while the main power source is in an off state, wherein the core ECU is configured to send an activation signal to each slave ECU through the in-vehicle communication network when the current time becomes the activation time of each of the plurality of slave ECUs while the main power source is in an off state.

Managing activation time of slave ECUs in sleep state with a management table when ignition is turned off

Provided herein is a dual-phase stainless steel having excellent carbon dioxide corrosion resistance, excellent sulfide stress corrosion cracking resistance, and excellent sulfide stress cracking resistance. The dual-phase stainless steel contains, in mass %, C: 0.03% or less, Si: 1.0% or less, Mn: 0.10 to 1.5%, P: 0.030% or less, S: 0.005% or less, Cr: 20.0 to 30.0%, Ni: 5.0 to 10.0%, Mo: 2.0 to 5.0%, Cu: 2.0 to 6.0%, N: less than 0.07%, and the balance Fe and unavoidable impurities, and has a structure that is 20 to 70% austenite phase, and 30 to 80% ferrite phase in terms of a volume fraction.

Dual-phase stainless steel, and method of production thereof

A vehicle control apparatus configured to control a vehicle capable of switching between a manual drive mode for driving manually and a self-drive mode for driving autonomously. The vehicle control apparatus includes an electric control unit having a microprocessor and a memory. The microprocessor is configured to perform detecting a failure of the vehicle while traveling in the manual drive mode, and switching a drive mode from the manual drive mode to the self-drive mode when the failure is detected.

Vehicle control apparatus for switching from a manual drive mode to self-drive mode

Provided is a hydraulic pressure control device. A hydraulic pressure control device supplies hydraulic pressure to a piston using solenoid valves and performs 2:1 switching processing of stopping the supply of hydraulic pressure to the piston using a solenoid valve when the piston is switched to a parking locked state. When the piston is not switched to a side that is to be a parking locked state, hydraulic pressure is supplied to two solenoid valves, and 2:0 switching processing of stopping the supply of hydraulic pressure to the piston by solenoid valves is performed. Then, a reporting processing of reporting that at least one of the solenoid valves has failed is performed.

Hydraulic pressure control device

In an apparatus for controlling an automatic transmission having gear engaging mechanisms installed to engage one of gears to establish n-th speed when supplied with hydraulic pressure discharged from an oil pump driven by a prime mover, an electromagnetic pressure-regulating valve installed to pressure-regulate the hydraulic pressure, an electromagnetic shift valve installed at a hydraulic passage to supply the hydraulic pressure to the gear engaging mechanisms, and a current supply circuit to supply current to the solenoid valve, cut-off of current supply to the solenoid valve from the current supply circuit is delayed by a predetermined time period, when the ignition switch is turned off.

Automatic transmission control apparatus

In an apparatus for controlling an automatic transmission connected to a prime mover mounted on a vehicle, having a torque converter equipped with a lock-up clutch, when predetermined operating conditions of the vehicle are satisfied at drive-off, a lock-up clutch engaging circuit is formed through a hydraulic supply circuit. Next it is determined whether engage-position sticking malfunction of the lock-up clutch has occurred based on a ratio of an input rotational speed of the automatic transmission relative to an output rotational speed of the prime mover and a change rate of the output rotational speed of the prime mover when the lock-up clutch engaging circuit has been formed, and fail-safe control is then implement when the sticking is determined.

Control apparatus for automatic transmission

In an apparatus for controlling an automatic transmission connected to a prime mover mounted on a vehicle, having a torque converter equipped with a lock-up clutch, when the automatic transmission is gear-shifted to a predetermined gear at deceleration of the vehicle and it is determined that predetermined operating conditions of the vehicle are satisfied, a lock-up clutch engaging circuit is formed through a hydraulic supply circuit. Next it is determined whether engage-position sticking malfunction of the lock-up clutch has occurred based on a ratio of an input rotational speed of the automatic transmission relative to an output rotational speed of the prime mover when the lock-up clutch engaging circuit has been formed, and fail-safe control is then implement when the sticking is determined.

In an apparatus for determining failure of a double-clutch automatic transmission having a line pressure-regulating valve, pressure-regulating valves and select valves, it is determined whether the pressure regulated by the line pressure-regulating valve is equal to or greater than a predetermined pressure and it is determined that the line pressure-regulating valve has failed if the pressure regulated by the line pressure-regulating valve is determined to be less than the predetermined pressure, whereas it is determined that one from among the pressure-regulating valves and select valves has failed if the pressure regulated by the line pressure-regulating valve is determined to be equal to or greater than the predetermined pressure.

Automatic transmission failure determination apparatus

In an apparatus for detecting abnormal hydraulic pressure of an automatic transmission having first and second input shafts that input rotation of an engine through first and second clutches and an idler shaft that inputs the rotation through a third clutch, and equipped with a hydraulic pressure supply circuit having a first pressure-regulating valve that generates line pressure, a line pressure-regulating valve that controls operation of the first pressure-regulating valve based on a line pressure command value, and first, second and third hydraulic pressure detectors that detect the hydraulic pressures of first, second and third oil passages respectively, it is determined whether abnormality that makes the high pressure abnormally high has occurred in the line pressure-regulating valve based on the hydraulic pressures detected by at least one of the first, second and third hydraulic pressure detectors and a line pressure command value, when predetermined operating conditions of the vehicle are satisfied.

Apparatus for detecting abnormal hydraulic pressure of automatic transmission

An apparatus for determining failure of an automatic transmission having gear engaging mechanisms engaging one of gears to input shafts and an output shaft, a first to third pressure-regulating valves, a first and second shift valves, and a failure determiner. The failure determiner energizes a solenoid valve to output a clutch pressure to one of the gear engaging mechanisms when the clutch pressure is less than a prescribed pressure, determines whether the one of the gear engaging mechanisms operates based on output of an operating state detector, and determines that the second pressure-regulating valve has failed when the one of the gear engaging mechanisms is determined to be inoperative.

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Wako, Japan

Yusuke Yoshimura