Abstract: A fastening method for fastening a nut to a bolt by screwing includes preparing a nut including a tool mounting portion formed on a seat surface, and an annular thin portion formed on the tool mounting portion opposite to the seat surface, swaging a plurality of places of the thin portion with punches from an outer circumferential direction, and flowing a thickness of the thin portion so as to extend to a front end of the bolt partially in a circumferential direction to be closely adhered to a screw portion of the bolt.

Abstract: A fuel injection apparatus for an internal combustion engine of port injection type is configured to change a ratio between a fuel injection period in an exhaust stroke and one in an inlet stroke in accordance with an internal EGR rate.

Abstract: A battery temperature control device for an electric vehicle is provided which is capable of maintaining both the range of the electric vehicle and the battery life at a high level without drastically reducing either of them.

Abstract: An electronic device having a press-fit connection for connecting a connector and an electronic part mounted on a printed circuit board which is possible to enable high density mounting. Viewing the printed circuit board from an upper surface, between adjacent through holes on which a compressive force acts upon insertion of the press-fit terminal, among the large number of through holes, a land or a conductor film connected to the conductor film formed on the inner wall surface of the through hole or the conductor film not connected to the conductor film formed on the inner wall surface of the through hole, formed in the circuit board held between the top layer circuit board and the bottom layer circuit board, exists in a width equal to or wider than the diameter of the through hole.

Abstract: A water pump of an internal combustion engine, including a pump housing having a cylindrical portion constructed so as to surround an outer peripheral side of a drive shaft, the cylindrical portion being integrally formed of an aluminum-based metal material, and a stepped portion provided on the outer peripheral side of the cylindrical portion. A bearing is provided having an outer race fixed to a pulley and an inner race made of an iron-based metal material and fixed to an outer periphery of the cylindrical portion. Additionally, a shielding member is provided having an inner peripheral side sandwiched between the inner race and the stepped portion, an outer peripheral side having a plate shape and extending to side of the outer race, and an end-face seal structure portion formed of an elastic material and formed on at least one of opposite surfaces of the sandwiched inner peripheral side.

Abstract: An automotive hydraulic brake system is provided which exhibits an excellent pressure reduction performance to a low ? road while restraining an intake resistance of a fluid pump. For providing the hydraulic brake system, a gate-in valve is connected to an intake passage that connects a master cylinder to an intake side of the fluid pump. The gate-in valve selectively opens and closes the intake passage in accordance with a mutual relation between a master cylinder pressure and a pressure produced at an intake side of the fluid pump.

Abstract: With use of electric power supplied from a vehicle power source, an electric motor is controlled based on a movement amount of an input rod by a master-pressure control device. A primary piston is thrust through an intermediation of a hall-screw mechanism to generate a brake fluid pressure in a master cylinder. The brake fluid pressure generated by the master cylinder is fed-back by an input piston through an intermediation of the input rod to a brake pedal. When system end conditions such as the OFF state of the ignition switch are satisfied, the master-pressure control device executes power-supply interruption control to interrupt the vehicle power source and supply necessary electric power from an auxiliary power source, to thereby continue brake control with the electric power stored in the auxiliary power source.

Abstract: The present invention provides a disk brake in which the respective components are arranged in such a manner that a distance between a central axis of a first reduction gear for transmitting a rotation of a motor to a cylinder portion side while slowing down the rotation, and a central axis of a cylinder portion is longer than a distance between a rotational axis of the motor and a central axis of the cylinder portion.

Abstract: When manufacturing a disk valve having a ring-shaped elastic seal member fixed to one side thereof for use in a cylinder type hydraulic shock absorber, a disk valve blanked from a plate material is set on a bottom of a lower mold member that is curved to be convex on one side. Mold clamping is performed to form a cavity by a cylindrical mold part and to press the disk valve with a press part to deform the disk valve into a shape that is convex on one side. In this state, a rubber material is filled into the cavity through a passage and vulcanized and cured to mold and fix an elastic seal member to the disk valve. At this time, the disk valve is deformed in a direction in which the curvature reduces by shrinkage of the rubber material. Accordingly, it is possible to reduce variations in flatness of the disk valve and hence possible to obtain stable damping force characteristics.

Abstract: A vehicle motion control apparatus, which is configured to be used with a vehicle including a brake force control unit capable of generating a brake force during a steering operation of the vehicle, includes a plurality of force generation apparatuses disposed between a vehicle body of the vehicle and a plurality of axles, each of which is capable of generating an adjustable force between the vehicle body and each wheel of the vehicle, a force adjustment unit configured to adjust the force of each of the force generation apparatuses, and a target pitch state calculation unit configured to calculate a target pitch state from a state in which the vehicle body turns. The force adjustment unit adjusts the force of each of the force generation apparatuses so that a pitch state of the vehicle body approaches the target pitch state calculated by the target pitch state calculation unit.

Abstract: An electromagnetically actuated valve including a solenoid with a coil that generates a magnetic field upon being energized, a tubular member made of a non-magnetic material and disposed on an inner circumferential side of the coil, a movable valve body disposed within the tubular member and movable in an axial direction of the tubular member by an attraction force that is generated upon energizing the coil to thereby open and close a fluid passage, a first member made of a resin material and including a seat portion that is brought into contact with the movable valve body to close the fluid passage, and a first biasing member that biases the movable valve body toward the seat portion.