Hitachi, Ltd.

Honda Motor Co., Ltd.

Hitachi Car Engineering Co., Ltd.

Toshio Manaka

Takeshi Atago

Atsushi Yokoyama

Masami Shida

Nobuyuki Ueki

Kenichiro Matsubara

Takaomi Nishigaito

Yuzo Kadomukai

Masanori Ichinose

Yuichi Kuramochi

Toshio Ogawa

Toshio Ishii

Satoru Kuragaki

Shigeru Azuhata

Hisao Yamashita

Tokuji Yoshikawa

Takashi Nakahara

Osamu Kuroda

Yuichi Kitahara

Hidehiro Iizuka

Ryouta Doi

Norihiro Shinotsuka

Toshifumi Hiratsuka

Kojiro Okude

Hiroshi Hanaoka

Takashi Shiraishi

Masami Nagano

Tatsuya Yoshida

Kozo Nakamura

Masahiko Saito

Yasunori Mouri

Hidefumi Adachi

Toshimichi Minowa

Hiroshi Kuroda

Shiho Izumi

Yasuo Morooka

Yutaka Takaku

Hiroyuki Saito

Kiyoshi Miura

Akio Ito

Teruji Sekozawa

Kazuaki Takano

Teruo Yamauchi

Taisetsu Tanimichi

Takao Kojima

Masahide Sakamoto

Masahiko Amano

Junji Miyake

Masakatsu Fujishita

Tomoyuki Hanyu

Taizou Miyazaki

Shinsuke Takahashi

Eiichiro Kondo

Atsuya Toyama

Yasufumi Konishi

Tatsuo Yoshioka

Akira Teragakiuchi

Hiroshi Kodairajousui Hausu 205 Hanaoka

A communication control system has a plurality of control units that are connected via a communication bus to provide bidirectional communication. A control unit detects a failure when it occurs. Upon failure detection, the control unit generates a failure detection signal which operates a communication signal cutoff means to cut off the communication signal transmission from the control unit. In accordance with the communication signal reception state in a control unit other than the control unit in which the failure is detected, the former control unit identifies a failure occurrence in the latter faulty control unit.

Communication control system and method for supervising a failure

When a vehicle is suddenly stopped by turning off an ignition key switch on a way of a slope road, a braking force maintaining control is not preformed, and it often occurs that the vehicle moves down along the slope road. To prevent such occurrence, an electro-mechanical braking device for maintaining the braking force is provided so that the vehicle is parked securely. The electro-mechanical braking device includes a parking brake mechanism for maintaining the brake force even when an ignition key switch (power supply switch) of the vehicle is turned off. When the power supply switch (ignition key switch) of the vehicle is turned off with a braking pedal being stroked or a braking operation signal being present, the parking-brake mechanism is activated (the brake force is maintained).

Electro mechanical brake, control device and control methods

A brake device includes an actuator which is provided on a wheel side of a vehicle having a suspension, the actuator generates a braking force by being electrically driven. A drive controller is also provided for receiving a signal regarding the braking force from a vehicle motion controller and sensors, and driving the actuator accordingly. To reduce the number of high cost bending wires necessary to communicate between the sensors, the drive controller and the vehicle motion controller, the drive controller and the sensors are attached to the actuator side (unspring-mass).

Brake device for vehicle

A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line.

Control apparatus for electric motor of inverter system and control apparatus for electro mechanical brake

A power-supply unit for automobiles, connected to an electrically-driven brake device which generates braking forces by being electrically driven, an electric generator capable of generating braking forces for a vehicle by power generation, and a storage device for storing electric power, the power-supply unit comprising a first power supply line for connecting the electric generator with the storage device, a second power supply line for connecting the first power supply line with the electrically-driven brake device, and power-source connection means provided on the second power supply line and have interrupting function.

Power supply unit for automobiles, which can provide braking force even when abnormality occurs in the power supply unit of electrically driven brake devices

An electrically driven brake device includes a plurality of brake actuators for generating braking force when driven electrically, a power supply source for storing electric energy and supplying power to the brake actuators, a power source line for connecting the power supply source and the brake actuators, and a power breaker at a position of the power source line at which the brake actuators can be insulated and separated into at least two systems.

Electrically driven brake device and control apparatus thereof

In a vehicular control device, it is necessary to measure or calculate six physical quantities-forward-reverse speed, left-right speed, vertical speed, pitch angle, roll angle, and angle of sideslip-representing vehicular movement and to control the braking force of each wheel and/or the damping coefficient of each suspension shock absorber in order to further shorten braking distance particularly at the time of braking and to prevent spin at that time. In this case, it is necessary to furnish sensors to measure speed and angle directly. In the present invention, four radar sensors are used in order to directly measure the forward-reverse speed and the left-right speed. Also, the vertical speed, the pitch angle, the roll angle, and the angle of sideslip are indirectly measured from the output of the radar sensors. By using three or four radar sensors, six physical quantities&#x2014;the forward speed, the left-right direction speed, the vertical speed, the angle of sideslip, the pitch angle, and the roll angle&#x2014;can be measured. Also, by using two radar sensors, three physical quantities&#x2014;the forward speed, the left-right speed, and the angle of sideslip&#x2014;can be measured.

Vehicular travel control device

An exhaust gas purification apparatus for use in an internal combustion engine comprises an exhaust gas duct connected to the engine through which the exhaust gas containing NOx gas passes and a catalyst so disposed in the exhaust gas duct that it contacts with the exhaust gas. The catalyst chemically adsorbs NOx under the condition that a stoichiometric amount of a gaseous oxidizing agent present in the exhaust gas is larger than that of a gaseous reducing agent present in the exhaust gas for reducing NOx, while NOx being adsorbed is catalytically reduced in the presence of the reducing agent under the condition that the stoichiometric amount of the oxidizing agent is not larger that of the reducing agent. Thereby, NOx, the lean burn exhaust gas in the engine can be effectively made harmlessly.

Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine

An on-vehicle breakdown-warning report system is disclosed. an occurrence of break-down is detected and judged based on a signal in an electronic control system installed on a control apparatus for an engine ignition system, a charging system, an engine fuel system, a engine cooling system, a power transmission system, and an oil lubricating system of an automobile or a diagnosis display system; and a diagnostic data is sent to an information terminal device of a diagnosis and maintenance agency or a service company having a diagnosis and maintenance agency as a contents information by using an on-vehicle mobile communication apparatus, and an action for an emergency measures and a maintenance schedule is asked.

On-vehicle breakdown-warning report system

To provide a headway control system, in which a congestion following processing can be started by the same operation as in ordinary driving. An arrangement is provided that lets a following control unitto start a control to follow a preceding vehicle on condition that a characteristic value, which is produced in a host vehicle when a driver starts moving the host vehicle, is detected in congested traffic. Acceleration or a vehicle speed may be used as the characteristic value. Another possible arrangement is to start the following control on condition that a variation in an engine of the host vehicle, which is generated in the host vehicle when the driver operates to start moving the host vehicle, is detected in congested traffic. For example, the following control may be started under condition that at least either one of the following is detected: an increase in an engine speed, an increase in an intake pressure, an increase in an injection pulse width, an increase in an engine oil pressure, and an increase in the number of ignition pulses.

Headway control system

A vehicle cruise control apparatus is provided for controlling a vehicle to run at a set speed desired by a driver. The apparatus stores a state in which the driver inputs a set speed (for example, the number of times the driver inputs the set speeds and a period at which the driver inputs the set speeds), and calculates a target acceleration/deceleration from the input state and a vehicle speed deviation (calculated by subtracting the actual vehicle speed from the set speed).

Method and apparatus for controlling vehicle cruise

A brake device includes an actuator which is provided on a wheel side of a vehicle having a suspension, the actuator generates a braking force by being electrically driven. A drive controller is also provided for receiving a signal regarding the braking force from a vehicle motion controller and sensors, and driving the actuator accordingly. To reduce the number of high cost bending wires necessary to communicate between the sensors, the drive controller and the vehicle motion controller, the drive controller and the sensors are attached to the actuator side (unspring-mass) and the drive controllercommunicates with the vehicle motion controller provided on the vehicle body side (spring-mass) of the vehicle by bidirectional multiplex communication.

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Hitachinaka, Japan

Toshio Manaka