Abstract: To provide continuous fiber-reinforced thermoplastic pellets having a good dispersion property of a reinforcing fiber bundle in injection molded articles and capable of achieving a satisfactory outward appearance of the injection molded articles and satisfying a mechanical strength of the injection molded articles by fully exerting the reinforcing effect, and a manufacturing method of the same.

Abstract: A long fiber reinforced plastic strand production device is provided with: a rotary type haul-off machine which forms a long fiber reinforced plastic strand by drawing out a reinforcing fiber bundle which has been impregnated with a plastic from an impregnation head while rotating the reinforcing fiber bundle around the axis thereof to apply twists in the reinforcing fiber bundle, and draws in the formed long fiber reinforced plastic strand; and a rotary type winding-up machine which introduces the long fiber reinforced plastic strand drawn from the rotary type haul-off machine to a winding bobbin while rotating the long fiber reinforced plastic strand around the axis of the strand in the same direction as the rotation direction of the reinforcing fiber bundle rotated by the rotary type haul-off machine, and winds the rotated long fiber reinforced plastic strand around the winding bobbin.

Abstract: In a method of manufacturing a fiber-reinforced strand, the fiber-reinforced strand is so manufactured that the cross-section thereof becomes as circular as possible. Particularly a method of causing a reinforced fiber bundle 3 to pass through a resin bath means 7 and, thereafter, twisting the reinforced fiber bundle 3. The resin bath means 7 includes an impregnation region 21 where the reinforced fiber bundle 3 is impregnated with a thermoplastic resin 5 and a twisting region 22 where the reinforced fiber bundle 3 after the resin impregnation can be twisted, and the reinforced fiber bundle 3 after the resin impregnation is twisted in such a manner that a twist pitch P imparted to the reinforced fiber bundle 3 after the resin impregnation within a length L in the twisting region 22 satisfies L/3?P?3.15/90×(dtex)1/2.

Abstract: A process for producing an impregnated-yarn cloth which is woven fabric configured of impregnated yarns, which has satisfactory shaping properties and, despite this, has a fine texture of the reinforced fiber bundles, and which gives a molded object having excellent strength. The process for producing an impregnated-yarn cloth (1) is characterized by impregnating fiber bundles (2) with a thermoplastic resin (5) held in a molten state in a resin tank, while or after twisting the fiber bundles (2) at a rate of 20 twists/m or more and 700 twists/m or less, to form an impregnated yarn (3); and knitting or weaving the thus-formed impregnated yarns (3) to obtain the impregnated-yarn cloth (1).

Abstract: An apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet includes a roving package constituted by a cylindrical package of a reinforcing fiber bundle, a reinforcing fiber bundle delivery device, an impregnation die, a withdrawing device disposed on a downstream side of the impregnation die, and a cutter member. The reinforcing fiber bundle delivery device includes a plurality of collapse suppressing members adapted to be pushed radially outwards against an inner periphery surface of the roving package to suppress collapse of winding layers and a pusher for displacing said plural collapse suppressing members radially outwards following the inner periphery surface of the roving package which inner periphery surface shifts radially outwards gradually as the reinforcing fiber bundle is drawn out in a successive manner.

Abstract: A drive control device for an electric vehicle that is driven by a motor-generator, includes: a detection unit that detects a fact that an accelerator pedal depression amount and a brake pedal depression amount of the electric vehicle are both zero; and a control unit that sets a regenerative braking torque command value for the motor-generator to zero, while the detection unit is detecting the fact.

Abstract: A running control device for an electric vehicle includes: a first calculation unit that calculates a predetermined reference torque required for braking/driving the motor that provides a beneficial effect with regard to power consumption of the electric vehicle; a second calculation unit that calculates interval allocation between a first interval in which the electric vehicle is propelled by braking/driving the motor at the predetermined reference torque and a second interval in which the electric vehicle is coasted without the motor being braked or driven; a third calculation unit that calculates a control requested torque for braking/driving the motor intermittently, so as alternatingly to repeat running of the electric vehicle in the first intervals and coasting of the electric vehicle in the second intervals; and a running control unit that performs running control of the electric vehicle by braking/driving the motor intermittently according to the control requested torque.

Abstract: A long fiber reinforced plastic strand production device is provided with: a rotary type haul-off machine which forms a long fiber reinforced plastic strand by drawing out a reinforcing fiber bundle which has been impregnated with a plastic from an impregnation head while rotating the reinforcing fiber bundle around the axis thereof to apply twists in the reinforcing fiber bundle, and draws in the formed long fiber reinforced plastic strand; and a rotary type winding-up machine which introduces the long fiber reinforced plastic strand drawn from the rotary type haul-off machine to a winding bobbin while rotating the long fiber reinforced plastic strand around the axis of the strand in the same direction as the rotation direction of the reinforcing fiber bundle rotated by the rotary type haul-off machine, and winds the rotated long fiber reinforced plastic strand around the winding bobbin.

Abstract: An electric vehicle power storage system includes a plurality of power storage element rows comprising a plurality of power storage elements connected in series, and includes a parallel connecting switch which selects the power storage element rows and connect the same in parallel, and performs connection and disconnection with respect to an electric load from one power storage element row to another. A parallel connection switch controller controls the parallel connection switch. A vehicle power requirement calculating unit calculates a vehicle power requirement, and a remaining level detecting unit detects a remaining level of the power storage element row. A voltage detecting unit detects a voltage of the power storage element row. A power storage system control apparatus controls the parallel connection switch on the basis of the vehicle power requirement, the remaining level of the power storage element row, and the voltage of the power storage element row.

Abstract: In a method of manufacturing a fiber-reinforced strand, the fiber-reinforced strand is so manufactured that the cross-section thereof becomes as circular as possible. The present invention concerns a method of causing a reinforced fiber bundle 3 to pass through a resin bath means 7 and, thereafter, twisting the reinforced fiber bundle 3. The resin bath means 7 includes an impregnation region 21 where the reinforced fiber bundle 3 is impregnated with a thermoplastic resin 5 and a twisting region 22 where the reinforced fiber bundle 3 after the resin impregnation can be twisted, and the reinforced fiber bundle 3 after the resin impregnation is twisted in such a manner that a twist pitch P imparted to the reinforced fiber bundle 3 after the resin impregnation within a length L in the twisting region 22 satisfies L/3?P?3.15/90×(dtex)1/2.

Abstract: A control device for an electrically powered vehicle, mounted to the electrically powered vehicle, includes: a current control element that takes off a charging current to be supplied to a low voltage battery in order to charge up the low voltage battery from an output current on the low voltage battery side of a voltage conversion device that performs voltage conversion between voltage of a high voltage battery and voltage of the low voltage battery; and an integrated control unit that determines a charging current value for the charging current based upon accumulated power information related to power accumulated in the low voltage battery and conversion efficiency of the voltage conversion by the voltage conversion device, and that controls the current control element so as to take off the charging current specified by the charging current value with the current control element.

Abstract: An apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet includes a roving package constituted by a cylindrical package of a reinforcing fiber bundle, a reinforcing fiber bundle delivery device, an impregnation die, a withdrawing device disposed on a downstream side of the impregnation die, and a cutter member. The reinforcing fiber bundle delivery device includes a plurality of collapse suppressing members adapted to be pushed radially outwards against an inner periphery surface of the roving package to suppress collapse of winding layers and a pusher for displacing said plural collapse suppressing members radially outwards following the inner periphery surface of the roving package which inner periphery surface shifts radially outwards gradually as the reinforcing fiber bundle is drawn out in a successive manner.

Abstract: A method and apparatus for manufacturing a continuous fiber-reinforced thermoplastic resin pellet are provided which can smoothly carry out a continuous drawing-out operation for a reinforcing fiber bundle (continuous fiber-reinforced resin strand). With respect to a terminal end of a reinforcing fiber bundle A of a roving package being exhausted and a front end of a reinforcing fiber bundle B of a new roving package, fiber quantity-halved end portions A1 and B1 each about half of the original fiber quantity are formed respectively, then reinforcing filaments in those fiber quantity-halved end portions are entangled by an air splicer to form an entangled portion C1, and reinforcing filaments in a portion downstream of the fiber quantity-halved end portion in the reinforcing fiber bundle B of the new roving package are entangled by an air splicer to form an entangled portion C2.

Abstract: A method for connecting a tail end portion of a reinforcing fiber bundle of a preceding wound body to a front end portion of a reinforcing fiber bundle unwound from a new wound body by blowing pressurized air to both of the ends to unravel and entwine both of the reinforcing fiber bundles, wherein the method includes a preparation step for adjusting the amount of a sizing agent contained in the front end of the reinforcing fiber bundle unwound from the new wound body and the tail end of the preceding wound body to not less than 0 wt % and not more than 4 wt %, and the reinforcing fiber bundles are connected after the preparation step.

Abstract: A running control device for an electric vehicle includes: a first calculation unit that calculates a predetermined reference torque required for braking/driving the motor that provides a beneficial effect with regard to power consumption of the electric vehicle; a second calculation unit that calculates interval allocation between a first interval in which the electric vehicle is propelled by braking/driving the motor at the predetermined reference torque and a second interval in which the electric vehicle is coasted without the motor being braked or driven; a third calculation unit that calculates a control requested torque for braking/driving the motor intermittently, so as alternatingly to repeat running of the electric vehicle in the first intervals and coasting of the electric vehicle in the second intervals; and a running control unit that performs running control of the electric vehicle by braking/driving the motor intermittently according to the control requested torque.

Abstract: A manufacturing apparatus of a fiber-reinforced resin strand including spreaders that spread a reinforcing fiber bundle and are provided inside a crosshead to which a molten resin material is supplied continuously from an extruding machine, twisting rollers provided at a downstream position from an exit nozzle of the crosshead and that pultrude a fiber-reinforced resin strand formed of a resin-impregnated fiber bundle from the exit nozzle while imparting twists thereto, and twist retaining rollers provided at a downstream position from the twisting rollers and that retain twists of the fiber-reinforced resin strand. The twisting rollers and the twist retaining rollers are made of metal with asperities being formed on the surface thereof. The manufacturing apparatus can achieve excellent durability and is capable of manufacturing a fiber-reinforced resin strand at a high production rate without causing slipping.

Abstract: A drive control device for an electric vehicle that is driven by a motor-generator, includes: a detection unit that detects a fact that an accelerator pedal depression amount and a brake pedal depression amount of the electric vehicle are both zero; and a control unit that sets a regenerative braking torque command value for the motor-generator to zero, while the detection unit is detecting the fact.

Abstract: The charge control system includes at least a battery temperature control device, a cooling device, a heating device, and an integrated control device. The battery control device detects SOC of a battery. Based on the detected SOC, the integrated control device switches between a first charging mode in which the battery is charged at a substantially constant current and a second charging mode in which the battery is charged at a substantially constant voltage. In the second charging mode, the battery temperature control device performs rapid cooling control to control the cooling device such that it has a cooling capacity in the second charging mode higher than a cooling capacity in the first charging mode. Thus, the battery temperature is appropriately controlled to increase a cruising distance even when the electric vehicle is run immediately after completion of charging.

Abstract: A manufacturing apparatus of a fiber-reinforced resin strand including a roller offset angle adjusting device which can easily adjust roller offset angles of a pair of twisting rollers for twisting a fiber-reinforced resin strand, the device being simple in structure. An offset angle of a first twisting roller can be adjusted by only rotating a first shaft roller support member in the roller offset angle adjusting device of the manufacturing apparatus of a fiber-reinforced resin strand around the axis of a first driving shaft which is orthogonal to a first roller support shaft of the first twisting roller. Likewise, an offset angle of a second twisting roller can be adjusted by only rotating a second shaft roller support member around the axis of a second driving shaft which is orthogonal to a second roller support shaft of the second twisting roller.

Abstract: The invention provides a natural fiber-reinforced thermoplastic resin injection molding having an excellent ability to discharge static electricity. The natural fiber-reinforced thermoplastic resin injection molding is obtained by injection-molding with using natural fiber-reinforced thermoplastic resin pellets as a molding feedstock containing natural fibers as reinforcing fibers, has a natural fiber content of from 20 to 60 wt %. The natural fibers have an average length of from 1.5 to 4.0 mm. The natural fiber-reinforced thermoplastic resin injection molding has an electrostatic voltage half-life, as determined by the half-life measurement method specified in JIS L 1094, of less than 40 seconds.