Hitachi, Ltd.

Hitachi Automotive Engineering Co., Ltd.

Hitachi Automotive Systems, Ltd.

Mitsuhiro Masuda

Keiichi Tokuyama

Hiroshi Kuroiwa

Masahiko Ibamoto

Osamu Igarashi

Kazuhiko Sato

Shotaro Naito

Shigeo Uno

Mitsuyoshi Okada

Susumu Sato

Toshimichi Minowa

Hiroshi Kimura

Yutaka Uematsu

Toshiya Satoh

Hideki Osaka

Nobuo Kurihara

Yutaka Nishimura

Toshiaki Ishii

Yoshiyuki Yoshida

Kiyoshi Miura

Sadayasu Ueno

Hiroki Funato

Junichi Ishii

Nobutake Tsuyuno

Matsuo Amano

Yasunori Mouri

Kozo Katogi

Kiyoshi Horibe

Taiji Hasegawa

Masahiro Toyama

Shizuhisa Watanabe

Shigeru Horikoshi

Kazuto Kinoshita

Hiroyuki Ohiwa

Provided is an electronic control unit, which includes a printed wiring board on which a semiconductor element is mounted, including a power supply pattern and a ground pattern which are formed on the printed wiring board and connected to the semiconductor element, at least one capacitance adjustment pattern which is formed on the printed wiring board, and a connection portion which is provided for each capacitance adjustment pattern and able to switch electrical connection between either the power supply pattern or the ground pattern and the capacitance adjustment pattern.

Electronic control device, vehicle, and method for manufacturing electronic control device

In a transfer-mold configuration of an automotive electronic control unit, the thermal expansion coefficient of the circuit board is made apparently equal to that of the base member to suppress excessive stresses between them. The circuit board and the base member are placed in the center of the transfer-mold structure to make thermal stresses symmetrical and thus suppress strains.

Multi-chip module packaging with thermal expansion coefficiencies

In order to provide a low-cost and high heat-radiating electronic circuit device featuring high compactness, little warpage, high air tightness, high moldability, high mass productivity, high reliability against thermal shocks, and high oil-proof reliability, a module structure made by packing a whole multi-layer circuit board which connects a semiconductor operating element, semiconductor memory elements, and passive elements thereon and part of a supporting material on which said multi-layer circuit board is placed into a single package by transfer-molding; wherein said multi-layer circuit board and said supporting material are bonded together with a compound metallic material made up from copper oxide and at least one metal selected from a set of gold, silver, and copper.

Electronic circuit device

A control apparatus and method for a powertrain of a vehicle provided with a drive unit which has the powertrain including an engine or an electric motor and an automatic transmission, and a driving shaft. The control apparatus is provided with first torque estimating means for obtaining a first estimated driving shaft torque, second torque estimating unit for obtaining a second estimated driving shaft torque used to correct said first estimated driving shaft torque, comparison means for comparing said first estimated driving shaft torque with said second estimated driving shaft torque, and driving shaft torque calculating means for calculating a driving shaft torque on the basis of the result of the comparison.

Control apparatus and method for powertrain of a vehicle

The invention provides a torque feedback shift control device for an engine control system including an engine, an engine torque controller, an automatic transmission for changing output speed of the engine, and a transmission controller for controlling gear shifting in the transmission. A target torque generator is provided for generating a signal indicative of a target torque pattern in shifting of the automatic transmission according to a shifting signal from the transmission controller. A drive shaft torque detector detects an output torque of the automatic transmission, and the engine controller performs feedback control of the engine torque so that the output torque detected by the drive shaft torque detector in downshifting of the automatic transmission follows up the target torque pattern.

Torque feedback shift control device and method

A torque detection mechanism can be provided for a power train and its control unit without newly adding a sensor and its signal processing module. As a gear pair for the torque detection mechanism of a phase difference type, existing gears in a transmission are used, or a gear pair for this mechanism are provided adjacent to these existing gears. From phase signals sent from pickups, a phase difference signal is obtained by use of one part of existing devices in the control unit. The torque detection mechanism can be realized with the minimum number of component parts by utilizing the existing members and spaces instead of newly adding a sensor and its module. The invention can be applied to either of FF and FR cars, and has a practical structure in respect of the performance, costs and reliability.

Torque detection apparatus of power train

There are disclosed an automatic gear change control apparatus for an automobile and a method of controlling such apparatus. A rotational output of an internal combustion engine is connected to drive wheels of the automobile and a load device. When a gear shifting-up of an automatic transmission is to be effected, the load applied by the load device is increased, or the load is connected to an output rotation shaft of the engine via a selectively-connecting device, thereby reducing the rotational speed of the output rotation shaft of the engine to a required level.

Automatic gear change control apparatus for automobile and method of

An apparatus for adjusting height of a motor vehicle have functions of detecting abnormality of sensors for detecting the vehicle height, driving a compressor independent of outputs of the sensors when pressure within a suspension is lower than a predetermined value, enabling actuation of the compressor after lapse of a predetermined time since turning-on of an ignition switch, enabling decreasing of the vehicle height for a predetermined time after turning-off of the ignition switch, and a self-diagnosing function for preventing runaway of the control.

Height adjusting apparatus for motor vehicle

A liquid crystal panel device comprises a liquid crystal panel having a relatively large area particularly while in use with an automobile dashboard and having a plurality of display sections, a diffusion plate disposed opposing the rear face of the liquid crystal panel for diffusing receiving light rays, a printed circuit board disposed opposing the rear face of the diffusion plate, and a plurality of light emitting members disposed in equally spaced relation to each other on the printed circuit board over the whole region of the liquid crystal panel. A reflection plate is provided between the diffusion plate and the board, and a partition plate corresponding to the display section of the liquid crystal panel is provided. Within a space defined by the diffusion plate, board, reflection plate, and partition plate, the light emitting members consisting of three or four incandescent lamps are disposed.

Liquid crystal panel display device

A display apparatus for a vehicle comprising arithmetic unit for processing outputs of different sensors in accordance with a given process program so as to provide display signals adapted to be displayed on different display units, a memory for storing predetermined process programs corresponding to different display standards, and a program selecting device for selecting one of the process programs stored in the memory in accordance with a desired one of the display standards and supplying the selected process program to the arithmetic unit, whereby the display units can display signals to meet any one of the different display standards.

Display apparatus for vehicle

A vehicle height adjusting device comprises a vehicle height sensor for sensing the height of a vehicle, means for controlling the vehicle height which produces a vehicle height adjusting signal in response to the signal from the vehicle height sensor, driving means for adjusting the vehicle height in response to the vehicle height adjusting signal, constant voltage conversion means for converting a power supply voltage into a constant voltage and supplying the constant voltage to the means for controlling the vehicle height, and power supply control means for on-off controlling the supply of the power supply voltage in accordance with the turn-on and turn-off of an ignition switch. The vehicle height adjusting device further comprises means for stopping the power supply by a power supply stopping signal from the vehicle height control means when a predetermined time elapses after the ignition switch is turned off, and low voltage detecting means for stopping the operation of the means for controlling the vehicle height when the power supply is stopped and the output voltage from the constant voltage conversion means becomes lower than a predetermined reference voltage An integrating circuit can be used in place of the low voltage detecting means. The vehicle height adjusting device performs an assured self-cut-off operation.

Vehicle height adjusting device

A vehicle trip computer for detecting the distance traveled by a vehicle and the amount of fuel remaining in the fuel tank and computing and displaying the capable travel distance of the vehicle through the desired computational operations in accordance with the detected data. During the initial period following the connection of the trip computer to the power source, the capable travel distance of the vehicle is computed by using a predetermined initial gas mileage in place of the computed gas mileage. Also, the trip computer does not replace the initial gas mileage with the computed actual gas mileage until the distance traveled by the vehicle exceeds a predetermined distance.

Trip computer for vehicles

Growing community of inventors

Hitachinaka, Japan

Mitsuhiro Masuda