Abstract: The present invention provides a heat exchanger which is assembled by brazing an aluminum fin material to the outer surface of an aluminum tube material formed by bending a sheet material, in particular, an aluminum heat exchanger which can be suitably used as an automotive heat exchanger such as a condenser or evaporator. The tube material is formed of a two-layer clad sheet which includes a core material and an Al—Zn alloy layer clad on the core material. The Al—Zn alloy layer is clad on the outer surface of the tube material and brazed to the aluminum fin material. The potential of the Al—Zn alloy layer in normal corrosive solution is 100 mV or more lower than the potential of the core material in the normal corrosive solution. The potential of the Al—Zn alloy layer in the normal corrosive solution is lower than the potential of the core material in high-concentration corrosive water. The normal corrosive solution refers to an aqueous solution containing 10 g/l of NaCl and 0.

Abstract: When replacing a disk device that has passed over a warranty expiration date with a new disk device, data necessary to be stored thereafter among the data that is recorded in the device must be transferred to another disk device, to thereby require a time for processing. A storage system includes: a storage device having a plurality of disk drives that stores data; and a data storage managing device which is connected to the storage device and has a data storage managing module that manages the storage of the data in the storage device, in which the data storage managing module compares a retention date of the data to be stored with a warranty expiration date of the disk drive, selects a disk drive that stores the data as the result of the comparison, and stores the data in the selected disk drive.

Abstract: A front and rear wheel drive vehicle having a front wheel pair and a rear wheel pair, one of which is driven with an engine and the other one of which is driven with a motor. The vehicle includes an engine driving force setting section which sets a target driving force of the engine based on driving conditions of the vehicle, a motor driving force setting section which sets a target driving force of the motor based on driving conditions of the vehicle and a control section of the motor in accordance with changes of the target engine driving force and the target motor driving force.

Abstract: A hybrid vehicle improves drivability during switching operation between an engine cruise mode and a motor cruise mode.

Abstract: An aluminum alloy piping material exhibiting good corrosion resistance and having an excellent workability, such as bulge formation capability at the pipe ends. The aluminum alloy piping material is suitably used for pipes connecting automotive radiators and heaters or pipes connecting evaporators, condensers, and compressors. The aluminum alloy material is formed from an aluminum alloy which contains 0.3-1.5% of Mn, 0.20% or less of Cu, 0.06-0.30% of Ti, 0.01-0.20% of Fe, and 0.01-0.20% of Si, with the balance being Al and impurities, wherein, among Si compounds, Fe compounds, and Mn compounds present in the matrix, the number of compounds with a particle diameter of 0.5 &mgr;m or more is 2×104 or less per mm2. The aluminum alloy piping material may further comprise 0.4% or less of Mg.

Abstract: An aluminum alloy brazing sheet has a quad-layer structure made of an outer filler material, intermediate layer material, core material, and inner filler material. The core material contains 0.5-1.6% of Mn, 0.10-0.50% of Cu, 0.05-0.50% of Mg, and 0.06-0.30% of Ti, and, as impurities, 0.5% or less of Fe, 0.5% or less of Si, and 0.1% or less of Zn, with the remainder being Al and unavoidable impurities; the intermediate layer material contains 0.2-1.5% of Mg and at least one of 0.5-4% of Zn, 0.005-0.2% of In, and 0.01-0.2% of Sn, and, as impurities, 0.3% or less of Si, 0.3% or less of Fe, 0.05% or less of Cu, 0.05% or less of Mn, and 0.3% or less of Ti, with the remainder being Al and unavoidable impurities. The thickness of the intermediate layer material is 50 &mgr;m or more and no more than the thickness of the core material. The outer filler material and the inner filler material are Al—Si—Mg alloys, the outer filler material, preferably including at least one of 0.005-0.2% of In and 0.01-0.

Abstract: A driving force control system for a front-and-rear wheel drive vehicle, which is capable of charging a battery based on a traveling condition of the vehicle. The front-and-rear wheel drive vehicle is driven while switching between a drive mode for driving front wheels by an engine and driving rear wheels by a motor, and a recharge mode for recovering running energy of the vehicle and charging the battery with the recovered running energy. Parameters (accelerator pedal opening &THgr;AP and a vehicle speed Vcar, or drive wheel speeds of the respective front and rear wheels) indicative of a driving condition of the vehicle are detected. A traveling condition of the vehicle is determined based on the parameters. It is determined, based on the traveling condition of the vehicle and the state of charge of the driving energy in the drive source, whether charging of the battery is to be executed.

Abstract: There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, even when the driver operates the steering wheel while the vehicle is performing decelerating travel on such a road, and smoothly performing the assistance of an electric motor when the vehicle is accelerated without developing a torque step, thereby ensuring stable traveling and excellent acceleration and drivability. The front-and-rear wheel drive vehicle drives the front wheels by an engine, and rear wheels by an electric motor via an electromagnetic clutch. The target driving force for driving the vehicle is calculated based on at least a vehicle speed and an accelerator pedal opening. The present traveling condition of the vehicle is determined.

Abstract: An aluminum alloy piping material exhibiting good corrosion resistance and excelling in workability such as bulge formation capability at the pipe ends. The aluminum alloy piping material is suitably used for pipes connecting automotive radiators and heaters or pipes connecting evaporators, condensers, and compressors. The aluminum alloy material comprises an aluminum alloy which comprises 0.3-1.5% of Mn, 0.20% or less of Cu, 0.06-0.30% of Ti, 0.01-0.20% of Fe, and 0.01-0.20% of Si, with the balance consisting of Al and impurities, wherein, among Si compounds, Fe compounds, and Mn compounds present in the matrix, the number of compounds with a particle diameter of 0.5 &mgr;m or more is 2×104 or less per mm2. The aluminum alloy piping material may further comprise 0.4% or less of Mg.

Abstract: A front and rear wheel drive vehicle 1 having a front wheel pair 7, 7 and a rear wheel pair 11, 11, one of which is driven with an engine 2 and the other one of which is driven with an motor 3, comprising: a target engine driving force setting means (an engine driving force setting section 12c) for obtaining a target driving force of the engine based on driving conditions of the vehicle; a target motor driving force setting means (a motor driving force setting section 12d) for obtaining a target driving force of the motor based on driving conditions of the vehicle; and a control means (a control section 12a) for controlling the driving force of the motor by way of modifying a change amount of a motor driving force command value associated with a change amount of the target motor driving force obtained by said target motor driving force setting means in accordance with an instance where the target driving force of the engine and the target driving force of the motor are both increasing or decreasing to thereby

Abstract: There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, even when the driver operates the steering wheel while the vehicle is performing decelerating travel on such a road, and smoothly performing the assistance of an electric motor when the vehicle is accelerated without developing a torque step, thereby ensuring stable traveling and excellent acceleration and drivability. The front-and-rear wheel drive vehicle drives the front wheels by an engine, and rear wheels by an electric motor via an electromagnetic clutch. The target driving force for driving the vehicle is calculated based on at least a vehicle speed and an accelerator pedal opening. The present traveling condition of the vehicle is determined.

Abstract: A high-strength aluminum alloy clad material for heat exchangers which excels in corrosion resistance and formability before brazing and has improved strength after brazing. The aluminum alloy clad material is made up of a core material and a brazing material, with one or both sides of the core material clad with the brazing material. The core material is made up of an aluminum alloy containing from 0.3% to less than 0.6% of Mn, from more than 0.6% to 1.0% of Cu, less than 0.1% of Si, 0.3% or less of Fe, and from 0.06% to 0.35% of Ti, with the remainder being Al and impurities; and the brazing material used to clad the core material is made up of an Al—Si aluminum alloy in which the Ca content is limited to 0.006% or less.

Abstract: There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable of charging a battery properly and easily in dependence on a traveling condition of the vehicle and the intention of the driver, thereby improving fuel economy and drivability and ensuring traveling stability of the vehicle. The front-and-rear wheel drive vehicle is driven while switching between a drive mode for driving front wheels by an engine and driving rear wheels by a motor, and a recharge mode for recovering running energy of the vehicle and charging the battery with the recovered running energy. Parameters (accelerator pedal opening &thgr;AP and a vehicle speed Vcar, or drive wheel speeds of the respective front and rear wheels) indicative of a driving condition of the vehicle are detected. A traveling condition of the vehicle is determined based on the parameters.

Abstract: A process for producing an [S,S]-ethylenediamine-N,N'-disuccinic acid alkali metal salt which comprises reacting fumaric acid with ethylenediamine in an aqueous medium in the presence of an ion of at least one metal selected from the group consisting of alkaline earth metals and transition metals by the action of ethylenediamine-disuccinic acid ethylenediamine lyase of microorganism origin, adding an alkali hydroxide to a reaction product mixture thereby to separate and recover the metal ion as an insoluble precipitate, and obtaining an [S,S]-ethylenediamine-N,N'-disuccinic acid alkali metal salt.

Abstract: In a database management system for concurrently executing a plurality of transactions for access to a database, there is provided a user interface for defining a parent/child relationship between a plurality of pieces of data. The parent information of data is added to the data itself and to a storage location information of the data in the database. Upon access to data, lock control is performed by use of the parent information of the data, thereby performing representation of locked a object.

Abstract: An air bag triggering device comprises a cylindrical frame, a slide member slidably mounted within the cylindrical frame and operable to open a pipeline connecting a high-pressure gas cylinder to an air bag, and a link mechanism operatively associated with the slide member. The link mechanism includes a latch lever adapted to releasably engage the slide member, a swing lever engageable with the latch lever, a support member interposed between the latch lever and the swing lever and having opposite ends pivotally supported on the latch lever and swing lever, and a pendulum pivotally mounted and movable by impacts applied thereto.