Hitachi, Ltd.

Hitachi Automotive Engineering Co., Ltd.

Other

Hitachi Engineering Co., Ltd.

Yorozu Corporation

Kyushu University

Hitachi Car Engineering Co., Ltd.

Hitachi Media Electronics Co., Ltd.

Japan Servo Co.,ltd.

Hitachi Mizusawa Electronics Co.

Hiroshi Kimura

Kunio Miyashita

Toshimichi Minowa

Shigeki Morinaga

Syooichi Kawamata

Takashi Shiraishi

Naoyuki Ozaki

Hiroshi Hayashida

Nobuo Kurihara

Yoshishige Ohyama

Toshio Ishii

Yutaka Takaku

Junich Ishii

Akihiko Kanouda

Kazuo Tahara

Yutaka Nishimura

Yoshiyuki Yoshida

Kenichi Onda

Toshimi Abukawa

Ryutaro Horita

Kenichi Hase

Hisatugu Ishikura

Toshiyuki Koterazawa

Hideaki Horie

Toru Tatsuzaki

Shuichi Takamatsu

Katsuji Marumoto

Hirohisa Yamamura

Mitsuyuki Hombu

Katsunori Hayashi

Takashi Nara

Seizi Yamashita

Fumio Tajima

Toshiaki Okuyama

Kunio Watanabe

Tsutomu Ohmae

Hideki Nihei

Kosho Ishizaki

Hideki Miyazaki

Toshio Hori

Masahiko Ibamoto

Kiyoshi Miura

Norikazu Tokunaga

Akira Uragami

Hiroshi Kanazawa

Nobuyoshi Mutoh

Katsunori Nishimura

Nobuyoshi Tsuboi

Akihiko Hirano

Tsutomu Omae

Kazuya Kawano

Masayoshi Sato

Satoru Funaki

Yasuyuki Sugiura

Takeshi Onaka

Yoshiteru Ishida

Takeo Maeda

Yoshiaki Kumashiro

Akisuke Naruse

Syuya Hagiwara

Hiroyuki Minemura

Minoru Ohsuga

Toshiharu Nogi

Hiroshi Kuroiwa

Akihiko Emori

Ryoso Masaki

Takeshi Atago

Noboru Sugiura

Takatoshi Kato

Seiichi Mita

Junichi Seki

Mitsuru Watabe

Hiroshi Katayama

Yuko Sato

Junichi Ishii

Shotaro Naito

Yoshikazu Hoshi

Kanji Kawakami

Yoshihiko Akagi

Shoichi Miyazawa

Hiroatsu Tokuda

Hidetoshi Honbo

Takushi Nishiya

Kazuo Ohnishi

Mitsuhiro Masuda

Masaharu Matsumoto

Kazuo Takaku

Keiichi Tokuyama

Toshio Seki

Shigeki Saito

Shigeru Horikoshi

Mitsuyuki Honbu

Ryouhei Saga

Noriyuki Uchiyama

Syoichi Miyazawa

Masaharu Ishizuki

Tetsunosuke Nakamura

Yasuo Noto

Noriaki Arakawa

Shunichi Tanae

A method is provided for integrating a DNA fragment of a desired base sequence into a site located adjacent to a binding region of a DNA-binding protein bound to a DNA molecule, the method including bringing the DNA fragment having a base sequence including a transposase-binding sequence and the desired base sequence close to the binding region using a specific binding substance to the DNA-binding protein, binding transposase to the transposase-binding sequence, and activating the transposase such that the DNA fragment of the desired base sequence is integrated into the site located adjacent to the binding region.

Method for inserting desired DNA fragment into site located adjacent to binding domain of DNA-binding protein

Method of manufacturing a vehicular arm component having a particular torsional rigidity and a sufficient tensile strength. Method of manufacturing a vehicular arm componenthaving a hollow shape in open cross-section by subjecting workpiece W, which is a flat plate, extending in an XY plane to pressing in stages such that two side surfaces W, Wof the workpiece in an XZ plane formed by the X direction and a Z direction face one another across a gap G, the method including a restriking process in which a protrusiondisposed on a restriking dieto be extended in the X direction is arranged in the gap between the two side surfaces facing one another and the two side surfaces are brought into contact with the protrusion such that the workpiece is pressed from an outer periphery to an inner periphery.

Vehicular arm component manufacturing method and vehicular arm component

The invention is characterized in that, when protrusion partsare raised from a substrate W and the protrusion partsare formed into spacerswith a predetermined outer diameter D and height H, the protrusion partsare temporarily formed so as to have a diameter larger than a predetermined outer diameter D and a height larger than a predetermined height H, and the protrusion partsare crushed, and leading end portionsof the protrusion partsare protruded in a radially outward direction so as to have a double-layered structure, and then through-holesare opened at the leading end portions. Accordingly, the leading end portionshave strength due to a double-layered structure, and side portionsalso have high strength due to contraction by pressing, whereby the sleeve-integrated member includes the entirely high-strength spacers

Member integrated with sleeve, and method for manufacturing same

A combustion state is diagnoses by extracting specific rotation period component of a period synchronous with rotation from a combustion state parameter for at least two rotations. The combustion state is judged on the basis of the extracted specific rotation period component. The combustion state parameter may be the engine speed or the output torque of a multiple-cylinder engine which varies according to the combustion state of the engine.

Combustion state diagnosing system and combustion state diagnosing method for diagnosing engine and recording medium

A diagnosis apparatus for diagnosing a catalytic converter of a motor vehicle as to whether the catalyst suffers deterioration by estimating a temperature of the catalyst or that of the exhaust gas in the vicinity of the catalyst on the basis of a plurality of engine parameters to thereby decide deterioration of the catalyst by using as an index the estimated temperature. Diagnosing method and apparatus capable of diagnosing deterioration of the catalyst with a high reliability are realized.

Method and apparatus for diagnosing engine exhaust gas purification system

A direct-current power-supply apparatus provided by the present invention comprises a switching converter for converting an input direct-current power into another direct-current power, a control circuit and an isolation means. The switching converter has a main switch device for generating a pulse voltage from the direct-current input, a synchronous-rectification circuit on the output side of the switching converter and a reverse-current-blocking switch. On the other hand, the control circuit includes a PWM formation unit for driving the main switch device, a synchronous-rectification control unit for controlling an operation to drive the synchronous-rectification circuit and a driving control unit for controlling an operation to drive the reverse-current-blocking switch. The control circuit operates by using a common electric potential appearing on the output side of the switching converter as a reference electric potential. A driving signal is applied to the main switch device through the isolation means. Thus, the direct-current power-supply apparatus is controlled without need for exchanges of the signal for driving the main switch device and a signal isolated between control devices including a switch for synchronous rectification.

Direct-current power-supply apparatus, control circuit thereof and semiconductor integrated circuit device for power supply

A power supply apparatus includes a semiconductor switching device for outputting power and a control circuit for controlling the on/off operation of the semiconductor switching device. The control circuit includes a circuit for applying, when turning on the semiconductor switching device, a first control signal corresponding to the difference between the output voltage of the power supply apparatus and a first reference value to the semiconductor switching device in accordance with the increase in the output voltage from the power supply apparatus thereby to operate the semiconductor switching device in a non-saturated area, so that the semiconductor switching device is turned on gradually.

Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching device

A transconductance control circuit is composed of a replica transconductance amplifier and resistance, a reference voltage source, first selectors, a differential amplifier, a voltage-current translate circuit with characteristics equal to the transconductance amplifier which constitutes analog filters. A first switch of the first selectors is connectable for the reference voltage source, and every constant period is made to connect it using clocks at the reference voltage source. A second switch of second selectors is connectable for plural capacitors, and every constant period is made to connect it using clocks at the capacitors.

Time sharing analog filters control method and magnetic disk system

There is disclosed a leakage diagnosis of an evaporative system in an internal combustion engine, and more particularly there is disclosed an evaporative system in which a more accurate leakage diagnosis can be effected using a change in the pressure in the evaporative system, and such a diagnosis method is also disclosed. The evaporative system includes a gauge line having a gauge valve, which gauge line branches off from an evaporative gas line or an evaporative gas purge line, and communicates with a point upstream of an engine throttle valve or with the ambient atmosphere, a pressure sensor for detecting the pressure in the evaporative system, and a purge valve. A leakage diagnosis of this system is effected based on detected values of the pressure sensor obtained by opening and closing the purge valve and the gauge valve. Therefore, accurate results of the diagnosis can be obtained.

Evaporative system and method of diagnosing same

A battery system includes a battery assembly having a plurality of modules, which are controlled by a system control circuit, each module including a module control circuit and a module by-pass circuit which is controlled via the module control circuit so as to suppress the charging variation among the plurality of modules. Each control circuit and the system-controlling circuit are connected to each other via a bilateral transmission medium and each module by-pass circuit is controlled based on information bilaterally transmitted between each module control circuit and the system control circuit via the bilateral transmission medium.

Battery system and electric vehicle using the battery system

A controller (100 in FIG. 1) for relieving a gear shift shock in a vehicle, comprising an input torque calculation portion (131) which calculates the input torque (T.sub.t) of the stepped automatic transmission mechanism of the vehicle from engine r.p.m. (N.sub.e) and turbine r.p.m. (N.sub.e), a shift start recognition portion (134) which recognizes the real mechanical shift start timing of the stepped automatic transmission mechanism in accordance with the change of the input torque (T.sub.t), a line-pressure correction magnitude calculation portion (142) which calculates a line-pressure correction magnitude (.DELTA.PL) during the gear shift operation of the stepped automatic transmission mechanism when the shift start has been recognized, a standard line pressure calculation portion (143) which calculates a standard line pressure (PL), and a command line pressure calculation portion (144) which adds the line-pressure correction magnitude (.DELTA.PL) to the standard line pressure (PL) and which delivers the resulting sum to a valve (52) for controlling the oil pressure of the hydraulic circuit of the stepped automatic transmission mechanism.

Driving force control system for a vehicle

Driving force control system using target driving torque, gear ratio and

A diagnosis apparatus for diagnosing a catalystic converter of a motor vehicle as to whether the catalyst suffers deterioration by estimating a temperature of the catalyst or that of the exhaust gas in the vicinity of the catalyst on the basis of a plurality of engine parameters to thereby decide deterioration of the catalyst by using as an index the estimated temperature. The apparatus includes a unit for estimating the temperature of the catalyst in a steady state by making use of an engine speed and an engine load which represent typical parameters employed in fuel injection control of the engine. The steady-state temperature facility is realized by storing the engine speeds and the engine loads obtained experimentally in the steady state operation of the engine in the form of a two-dimensional data map. A unit for correcting the estimated temperature of the catalyst in the transient state is provided for correcting the catalyst temperature determined by the steady-state catalyst temperature estimating unit to thereby ensure correct estimation of the catalyst temperature even in the course of operation of the motor vehicle. In the transient temperature estimating unit, non-linear characteristics are each described by combining a plurality of linear characteristics. A unit for estimating the temperature of the catalyst on the basis of the value determined by the steady-state temperature estimating unit and the transient-state temperature estimating unit is provided to decide deterioration of the catalyst.

Method and apparatus for diagnosing engine exhaust gas purification

A change gear control device is provided for an automatic transmission in a motor vehicle propelled by an internal combustion engine which is operated with an air/fuel mixture having air/fuel ratios ranging from a fuel rich air/fuel ratio to a fuel lean air/fuel ratio depending on driving conditions of the motor vehicle. In this device a first detector detects an engine torque of the internal combustion engine and a second detector detects a vehicle speed of the motor vehicle. A processor processes transmission gear ratios for the automatic transmission. In particular, the processor reads the detected engine torque from the first detector and the detected vehicle speed from the second detector, determines a new transmission gear ratio based upon the engine torque and the vehicle speed, and outputs a signal representing the new transmission gear ratio to the automatic transmission, whereby a gear shifting operation is effected at a timing based on an engine torque variation due to an operating air/fuel ratio change.

Change gear control device using acceleration and gear ratio as

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Hitachi, Japan

Hiroshi Kimura