Hitachi Automotive Systems, Ltd.

Hitachi, Ltd.

Hitachi Construction Machinery Co., Ltd.

Hitachi Astemo Ltd.

Tokai Carbon Company, Ltd.

Yuki Akiyama

Junya Takahashi

Toshiyuki Innami

Kenji Hiraku

Tadashi Osaka

Hiromasa Takahashi

Juri Shimizu

Teppei Saitoh

Sachio Sekiya

Hiroaki Matsushima

Riichi Uchida

Makoto Yamakado

Atsushi Yokoyama

Takuya Takahashi

Masatsugu Arai

Toshiya Oosawa

Kenta Maeda

Masamichi Imamura

Seiichi Satoh

Naoki Hiraga

Kengo Kurisu

A carbon black is disclosed which can exert excellent abrasion resistance while suppressing heat generation when incorporated into a rubber composition. A carbon black in which the total number of active sites represented by a product of a full width at half maximum of a Raman scattering peak appearing in a range of 1340 to 1360 cmwhen an excitation wavelength is 532 nm and a specific surface area when nitrogen gas is adsorbed is 3.60×10to 8.20×10(cm·m/g), and when a nuclear magnetic resonance signal of a spin-spin relaxation process observed by a solid echo method is represented by a sum of a first signal and a second signal having a time constant larger than that of the first signal, an amount of hydrogen represented by a signal intensity per unit mass at time 0 of the first signal is 50.0 to 250.0 (/g).

Carbon black, method for producing carbon black, and rubber composition

Provided are: a device and a method for controlling vehicle movement, with which it is possible to suppress causing uncomfortableness to vehicle occupants and causing unstable behavior during turning by automatic travel control; and a device and a method for generating a target course. In a vehicle capable of automatically controlling lateral acceleration occurring in the vehicle, the present invention controls the acceleration occurring in the vehicle such that jerk, which is the change over time of acceleration, becomes the greatest in a region where the lateral acceleration that occurs upon entering a curve is equal to or less than half the acceleration during normal turning, and the jerk decreases as the acceleration increases.

Device and method for controlling vehicle movement, and device and method for generating target course

An object of the invention is to realize an M+ control which is suitable to a driving scene without depending on pedal operation information of a driver. A vehicle motion control device according to the invention sets an absolute value of deceleration generated in the vehicle in a period in which the lateral motion of the vehicle is predicted to be changed from a state where the vehicle takes the lateral motion to a state where the vehicle does not take the lateral motion to be smaller than that generated in a period in which the lateral motion of the vehicle is predicted to be changed from a state the vehicle takes one of right and left lateral motions to a state where the vehicle takes the other lateral motion.

Vehicle movement control device, vehicle movement control method, and vehicle movement control program

The present invention provides a vehicle movement control device which is capable of achieving stable vehicle behavior during the movement of a vehicle in lane changing mode. When calculating a travel path for turning a vehicle to the left side or the right side and then turning the vehicle to the other side, this vehicle movement control device calculates the travel path so that the peak value of the curvature of the travel path decreases in a section where the vehicle speed is higher.

Vehicle movement control device

The present invention provides a vehicle control device and method capable of ensuring steering accuracy. In a vehicle provided with a left-right pair of steered wheels for which the braking/driving forces can each be controlled, and a steering force generation device that generates steering force for the steered wheels and controls the steering angle of the steered wheels, this vehicle control device and method control the steering force and the steering reaction force from the steering force generation device by controlling the braking/driving force of each of the steered wheels on the basis of the lateral force acting on the steered wheels.

Vehicle control device and method

A work machine that can detect abnormality such as a malfunction and wear and tear of each of hydraulic pumps including control equipment with high precision and that can reduce equipment cost is provided. A controlleraccording to the present invention includes a volumetric-transfer-efficiency-calculating sectionthat calculates a volumetric transfer efficiency &#x3b7;representing a transfer efficiency of hydraulic oil between a hydraulic cylinderand hydraulic pumpstoon the basis of a target discharge flow rate calculated by a target-discharge-flow-rate-calculating sectionand the speed of the hydraulic cylinderthat is detected by a speed sensor, and an abnormality decision sectionthat decides whether any one of the hydraulic pumpstois abnormal on the basis of the volumetric transfer efficiency &#x3b7;calculated by the volumetric-transfer-efficiency-calculating section

Work machine

A cruise control apparatus according to the present invention comprises a curve shape detection unit that detects the shape of a curve, an estimation trajectory calculation means that, on the basis of vehicle speed, calculates an estimated trajectory that satisfies a relationship in which a G-G diagram, which is a relationship between lateral acceleration and longitudinal acceleration, draws an arc, and a steering start point determination unit that determines a steering start point in front of a curve so that the estimated trajectory falls within the curve.

Cruise control apparatus and cruise control system

A work machine includes a closed circuit system in which there is provided a flushing valve. The flushing valve is equipped with: a valve main body; a spool which can select, in accordance with a position where the spool is arranged in the valve main body, connection between a first flow line and a third flow line, connection between a second flow line and the third flow line, or interruption of the connection between the first flow line, the second flow line, and the third flow line; a first liquid chamber that is provided inside the valve main body and into which a hydraulic working fluid from the first flow line flows; a first piston pressurizing the hydraulic working fluid having flowed into the first liquid chamber and moving the spool to a position where the second flow line and the third flow line are connected together, by the hydraulic pressure of the first liquid chamber; a second liquid chamber that is provided inside the valve main body and into which the hydraulic working fluid from the second flow line flows; and a second piston pressurizing the hydraulic working fluid having flowed into the second liquid chamber and moving the spool to a position where the first flow line and the third flow line are connected together, by the hydraulic pressure of the second liquid chamber.

To provide a work machine capable of efficiently regenerating the energy owned by hydraulic fluid during a swing deceleration. In the present invention, when a swing deceleration detection sectiondetects the state of a revolving upperstructurebeing decelerated, when an operation judgment sectionjudges the state that a double-tilting pump/motoris not supplying hydraulic fluid to any of a boom cylinderand an arm cylinder, and when the number of double-tilting pumps/motorshaving supplied hydraulic fluid to a swing hydraulic motorin the state before the swing deceleration detection sectiondetects the state of the revolving upperstructurebeing decelerated is equal to one or more, a pump valve control sectioncontrols changeover valvesto open and increases the displacements of the double-tilting pumps/motorsto the side to make suction pressures become higher than discharge pressures of the double-tilting pumps/motorsso that the double-tilting pumps/motorsoperate as motors.

In a vehicle control device, a slip ratio in which front and rear wheels are averaged, and a braking force in which the front and rear wheels are averaged, can be calculated. The vehicle control device is provided with: friction braking devices placed on each wheel; a motor that acts as a regenerative braking mechanism and is placed on the rear wheels; a vehicle slip stiffness calculation unit; a front and rear braking force ratio calculation unit; a vehicle slip stiffness correction unit; and a regenerative braking arithmetic unit. The regenerative braking arithmetic unit operates the friction braking device and the motor so as to make the vehicle slip stiffness reach a vehicle slip stiffness threshold value. Also, the vehicle slip stiffness correction unit corrects the vehicle slip stiffness threshold value in accordance with the ratio of the front wheel braking force and the rear wheel braking force.

Vehicle control device

A vehicular air conditioning system for saving energy includes: a first indoor cooling heat exchanger for suctioning in and cooling the air within or outside a vehicle; an indoor air conditioning heat exchanger installed on the downstream cooling heat exchanger for regulating the temperature of the applicable air, a refrigeration cycle connected to the applicable indoor air conditioning heat exchanger, a heating element mounted in the vehicle, and a circuit for the machine coolant circulating between the applicable heating element and the applicable first indoor cooling heat exchanger, and in which the air flow path for air flowing into the indoor air conditioning heat exchanger is structured by merging a flow path passing through the first indoor cooling heat exchanger to a flow path not passing through the first indoor cooling heat exchanger, and is also configured to allow switching to either of the two flow paths.

Vehicular air conditioning system

A vehicular air-conditioning system includes: a vehicle interior air-conditioning apparatus which includes a device cooling circuit of a heat generating device mounted in a vehicle, and a refrigeration cycle circuit; and an intermediate heat exchanger for heat exchange between a device cooling medium of the device cooling circuit and an air-conditioning cooling medium of the refrigeration cycle circuit. A vehicle control apparatus is configured to determine a temperature of the cooling medium, and select a shorter control cycle timing of the vehicular air-conditioning system when the temperature of the cooling medium is greater than a predetermined temperature.

Vehicular air-conditioning system including a temperature-dependent control cycle

A temperature-adjustment system for a vehicle includes temperature-adjustment passages and obtained by circularly connecting a battery, an inverter, a DC/DC converter, a traveling motor, and a pump that circulates the heat medium that adjusts temperatures by cooling/heating the heat generation elements, are provided. The temperature-adjustment passages and are provided with proportional valves that interrupt the flow of the heat medium and adjust the flow volume of the heat medium, an air flow-in part that introduces air into the battery temperature-adjustment passage, and a heat medium discharge part that discharges the heat medium from the temperature-adjustment passage to outside of the vehicle. The proportional valve, air flow-in part, battery, pump, and heat medium discharge part are preferably arranged in that order, and the proportional valve is closed and an air take-in valve and a heat medium discharge valve are opened.

Growing community of inventors

Tokyo, Japan

Yuki Akiyama