Hitachi, Ltd.

Hitachi Automotive Engineering Co., Ltd.

Hiroatsu Tokuda

Toshio Ogawa

Makoto Shioya

Motohisa Funabashi

Toshifumi Usui

Teruji Sekozawa

Osamu Kuroda

Nobukatsu Arai

Yuichi Kitahara

Mitsukuni Tsutsui

Tadao Osawa

Yoshihito Sekine

Izumi Watanabe

Masahiko Ibamoto

Ken Takahashi

Akira Kato

Hideo Nakamura

Yutaka Nishimura

Shigeru Azuhata

Tadahiko Miyoshi

Naoyuki Ozaki

Takanobu Ichihara

Kozo Katogi

Hidehiro Iizuka

Hiroshi Miyadera

Hiroshi Yoneda

Shigeo Tsuruoka

Takashi Shiraishi

Toshimichi Minowa

Hiroshi Kimura

Takeshi Atago

Shigeki Morinaga

Minoru Takahashi

Sanshiro Obara

Shuji Eguchi

Hisao Yamashita

Takao Ishikawa

Junichi Ishii

Kaoru Uchiyama

Yoshishige Ohyama

Masayuki Kobayashi

Tsuyoshi Fujita

Toshio Furuhashi

Norio Arashi

Mikihiko Onari

Hirayoshi Tanei

Kazuo Ojima

Masahiko Asano

Michimasa Horiuchi

Kenichi Sohma

Masuo Akamatsu

Toshifumi Hiratsuka

Tadao Suzuki

Kouji Harada

Hiroshi Hanaoka

Kunito Nakatsuru

Hiroshi Tobita

Yasuo Akutsu

Tetsuo Matsukura

Akihiko Konno

Tugihiro Yukitake

Shinichi Ichikawa

Tsutomu Kooriyama

Masahiro Ishida

Michihiko Onari

Masumi Takada

Masato Kirigaya

Hiroshi Soma

Mutsumi Watanabe

Hid&eacute;hiro Iizuka

A heat sink board having a first heat sink and a second heat sink with a smaller linear expansion coefficient than that of the first heat sink and being bonded to the first heat sink to form the heat sink board. The second heat sink is fitted to the first heat sink, and a material of the first heat sink in the vicinity of a boundary between the fitted heat sinks is plastically deformed for close adhesion to the second heat sink. A forming method makes bonding between the first and second heat sinks possible at room temperature, and the heat sink board made of a composite member having a high flat-surface accuracy can be easily and reliably obtained.

Heat sink board and manufacturing method thereof

The present invention has an object to enhance the reliability of the electrical connection of a silver-based conductor film on the surface of a glass ceramic board. In order to achieve the object, according to the present invention, by the use of a conductor paste containing a silver particle having a specific surface area of 0.3 m /g to 3.0 m /g and no glass, printing is carried out on a glass ceramic board and the conductor paste is fired at a firing temperature having a difference of &plusmn;50&deg; C. from a softening temperature of amorphous borosilicate glass contained in the glass ceramic. Consequently, a silver-based conductor film having high reliability of the electrical connection is formed on the ceramic board.

Electronic component and method of manufacturing the same

The invention provides a packaging structure applied to an automotive component having semiconductors and electronic parts mounted on a ceramic base, characterized in that the semiconductors and electronic parts are partly or entirely sealed with a thixotropic silicone gel which has a thixotropy index of about 1.5-3.6 and a penetration depth of about 6-10 mm and a rate of change in viscosity of less than 10% of the initial value.

Packaging structure and method for automotive components

Exhaust gas from internal combustion engines is treated with catalyst comprising an inorganic oxide supporter which supports at least one of noble metals selected from Rh, Pt, and Pd, alkali rare earth metals, rare earth metals, and magnesium in order to remove NOx effectively with superior durability of the catalyst notwithstanding the internal combustion engine is under a stoichiometric operation condition or a lean burning operation condition.

Exhaust gas purifying apparatus for an internal combustion engine

Removal of nitrogen oxides from exhaust gas using catalyst

An exhaust gas purifying catalyst is provided for purifying NOx contained in an exhaust gas from an internal combustion engine of a vehicle operated at a high air fuel ratio due to excessive oxygen, using unburnt HC or CO in the exhaust gas as a reducing agent. The catalyst comprises platinum, strontium and a rare earth metal, as active components, each supported on a support of inorganic oxide. The active components of the catalyst include platinum of 0.01-3.7 by wt ratio, strontium of 0.01-55 by wt ratio and a rare earth metal of 0.01-36 wt ratio, per the inorganic oxide of 100 by wt ratio.

Exhaust gas purifying method and catalyst used therefor

The invention provides a system for controlling a vehicle engine according to a plurality of stored torque patterns for various vehicle operating environments, based upon the accelerator pedal position and the vehicle speed. A vehicle environment, detection unit evaluates the vehicle environment and a target drive shaft torque pattern is selected from the plurality of target drive shaft torque patterns stored in a torque pattern storage. A target drive shaft torque calculating unit determines a target drive shaft torque from the selected target drive shaft torque pattern, the detected accelerator pedal operating amount and the detected vehicle speed. Finally, an engine output calculator determines an engine output at which a vehicle drive shaft generates the target drive shaft torque, and outputs the determined engine output to an engine output control unit.

Engine control system limiting engine output based on vehicle operating

Torque control method and apparatus for an internal combustion engine of a motor vehicle. A value of a desired drive shaft torque for the motor vehicle is determined on the basis of at least an accelerator pedal stroke for thereby controlling a drive shaft torque of the motor vehicle so as to assume the desired drive shaft torque value by controlling a gear ratio of a transmission gear coupling an output shaft of the engine to at least a drive shaft of the motor vehicle on the basis of the value of the desired drive shaft torque as determined. A gear ratio of the transmission gear and a flow rate of intake air fed to the engine are determined through different procedures in dependence on whether or not a torque transfer mechanism coupling the output shaft of the engine to an input shaft of the transmission gear is in a lock-up state in which the output shaft and the input shaft are coupled directly without slip. The drive shaft torque of the motor vehicle is so controlled that it assumes the desired drive shaft torque by controlling the transmission gear and engine intake air flow rate such that the determined gear ratio and the determined intake air flow rate can be realized.

Torque control method and apparatus for internal combustion engine and

A knock detection device being provided with a plurality of digital filter units, each is designed to cover respective characteristic resonance vibration frequency components inherent to resonance vibration modes due to knocking and including first, second and third digital filters, the first digital filter being tuned to the center frequency of the characteristic resonance vibration frequency component, the second digital filter being tuned to a neighboring lower frequency and the third digital filter being tuned to a neighboring higher frequency. The maximum intensity among the three intensities determined by the first, second and third digital filters is determined as the intensity for the characteristic resonance vibration frequency component and the determined result is fed-back to the digital filter unit to correct the center frequency of the first digital filter to the frequency showing the maximum intensity, whereby the knocking is reliably detected without being affected by such factors as engine operating conditions and secular changes of the engine.

Knock detection device for an internal combustion engine

An exothermic resistor for use in a hot wire air flow meter, having a wire (2) in the form of a coil made of a metal, a pair of lead wires (3) connected to connections (21) formed at the opposite ends of the coil, and a support member (4) which integrally supports the connections as well as the coil located between the connections. An example of the support member is in the form of a tubular cylinder closed at its both ends. The support member is formed from glass only or formed of a layer of a glass-ceramic-composite material. The hot wire air flow meter is designed to be easely mass-produced and to have improved transient response characteristics with respect to abrupt changes in the air flow rate.

Hot wire air flow meter

A method and apparatus of detecting knocking in an internal combustion engine having a crankshaft uses a knock detecting sensor to detect vibration caused by knocking. The signals from the knock detecting sensor are detected between a first and a second moment of time (i.e. a measurement window) and at least one of the first and second moments of time are independently varied in dependence upon a vibration spectrum of frequencies to be detected. In a preferred embodiment a plurality of frequency spectra, each having a different first and second moment of time, are each separately analyzed for determining knock intensity. The moments of time are represented by first and second angles of the crankshaft. A plurality of measurement windows are advantageously used to determine the level of knocking and if the level exceeds a predetermined level the ignition timing for the engine is retarded. The frequency of maximum amplitude is arranged in operation to be the center frequency of a frequency spectrum determined by the measurement window.

Method and apparatus for detecting knock in an internal combustion engine

A combustion/evaluation apparatus having a sampling member for sampling light emitted from flame in an internal combustion engine, optical fibers for separating the light sampled by the sampling member into at least two lights, optical filters for selectively transmitting lights having different wavelengths by being provided in optical paths for the separated lights, photoelectric conversion elements for respectively converting optical signals transmitted through the optical filters into electrical signals, and a calculation/evaluation unit for calculating an air ratio and a temperature for evaluation of the combustion condition of the flame by using a ratio of outputs from the photoelectric conversion elements, and for evaluating the combustion condition on the basis of the air ratio and the temperature. Preferably, the air ratio is calculated based on the ratio of an electrical signal output from the photoelectric conversion element obtained from the optical signal from CH radicals and an electrical signal output from the photoelectric conversion element obtained from the optical signal from C.sub.2 radicals, and the temperature is calculated from the ratio of electrical signal outputs from said photoelectric conversion elements based on an optical signal obtained from thermal radiation having wavelengths including none of the wavelengths of an optical signal obtained from radical emission.

Combustion evaluation apparatus and combustion controller

A hot wire type air flow meter employing a hot wire temperature dependent resistor having a heat generating portion and a non-heat generating portion comprising a feedback control circuit controlling the hot wire temperature dependent resistor temperature constant which includes a phase shift circuit for inducing a sufficient phase delay in feedback signals thereby compensating a second stage delay in output signals of the air flow meter caused by the thermal inertia of the non-heat generating portion and enhancing response characteristic of the air flow meter.

Air flow meter with compensation of second stage delay of thermal inertia

An exothermic resistor for use in a hot wire air flow meter, having a wire (2) in the form of a coil made of a metal, a pair of lead wires (3) connected to connections (21) formed at the opposite ends of the coil, and a support member (4) which integrally supports the connection as well as the coil located between the connections. An example of the support member is in the form of a tubular cylinder closed at its both ends. The support member is formed from glass only or formed of a layer of a glass-ceramic-composite material. The hot wire air flow meter is designed to be easely mass-produced and to have improved transient response characteristics with respect to abrupt changes in the air flow rate.

Method of manufacturing a hot wire air flow meter

Hot-wire air flow meter

Growing community of inventors

Katsuta, Japan

Hiroatsu Tokuda