摘要:
A sound insulator of the invention includes a sound absorption layer and an air-impermeable resonance layer, which are bonded to each other via an adhesive layer. The sound absorption layer has a thickness in a range of 5 to 50 mm, an area-weight of not greater than 2000 g/m2 and a two-layer structure of a high-density sound absorption layer and a low-density sound absorption layer. The high-density sound absorption layer is bonded to the air-impermeable resonance layer via the adhesive layer and has a density in a range of 0.05 to 0.20 g/cm3 and a thickness in a range of 2 to 30 mm. The low-density sound absorption layer is bonded to the other face of the high-density sound absorption layer via an adhesive layer and has a density in a range of 0.01 to 0.10 g/cm3 and a thickness in a range of 2 to 30 mm.
摘要翻译:本发明的隔音器包括通过粘合剂层彼此结合的吸声层和不透气的共振层。 吸声层的厚度为5〜50mm,面积重量为2000g / m2以下,高密度吸声层和低密度吸音层的2层结构 。 高密度吸声层经由粘合剂层粘合到不透气性共振层上,其密度为0.05〜0.20g / cm 3,厚度为2〜30mm。 低密度吸音层经由粘合剂层与高密度吸声层的另一面接合,密度为0.01〜0.10g / cm 3,厚度为2〜30mm 。
摘要:
The objective of the present invention is to efficiently and inexpensively mass-produce a sound insulator for a vehicle which is light in weight and has excellent sound insulating properties. For this purpose, the ultra-light sound insulator of the present invention is composed of a felt single sheet 3 having a vehicle interior side surface 1 and a vehicle exterior side surface 2 and being thermoformed of cotton fibers and binder fibers which are tangled and contacted and jointed to each other in a random manner. The ratio of the stiffness of the vehicle interior side surface 1 to that of the vehicle exterior side surface 2 is set to be in a range of 1.1 to 10. The single sheet 3 also has an area of gradually-decreasing stiffness 4 that spreads over at least one part of the area between the vehicle interior side surface 1 and the vehicle exterior side surface 2. The area of gradually-decreasing stiffness 4 has a stiffness distribution pattern in which the stiffness decreases gradually from the vehicle interior side surface 1 toward the vehicle exterior side surface 2 with respect to the direction perpendicular to the vehicle exterior side surface 2.
摘要:
Disclosed is a data collector that collects a first data string sent by a control unit to a network according to a predetermined format. The control unit has a first identification number, and the first data string includes the first identification number and a parameter which is used to control a vehicle or a vehicle component. The data collector includes a first collecting means for collecting the first data string sent by the control unit; and a second collecting means for collecting a second data string sent by a data converter. The data converter has a second identification number different from the first identification number of the control unit and the second data string conforms to the predetermined format. The data converter converts analog data sent from a sensor that detects a driving condition of the vehicle into digital data, puts the second identification number and the digital data in the second data string to be sent, and sends the second data string at a predetermined interval.
摘要:
During a downshift of a belt-drive continuously variable transmission, occurring owing to vehicle deceleration, a CVT controller foretells that a slippage between a drive belt and each of primary and secondary variable-width pulleys tends to occur, when a primary pulley pressure is less than a first predetermined pressure level and a primary pulley speed is less than a first predetermined rotational speed. When the belt slippage has been foretold, the CVT controller inhibits the primary pulley pressure from dropping by setting an actual transmission ratio calculated before a set time period from a time when the slippage has been foretold or a transmission ratio of a relatively higher speed side as compared with a ratio-change operating state obtained when the slippage has been foretold, to a desired transmission ratio, or by relatively rising a line pressure as compared with a line pressure level produced when the slippage has been foretold.
摘要:
The shift control apparatus for a continuously-variable transmission includes; a primary pulley; a secondary pulley connected with the primary pulley by a belt; a shift actuator adapted to vary a speed ratio; a line pressure adjusting section configured to adjust a line pressure; a secondary-pressure adjusting section configured to adjust a secondary pressure; and a control section configured to control the shift actuator, the line pressure adjusting section, and the secondary-pressure adjusting section. Moreover, the control section includes a fail determining section configured to determine whether the shift actuator is under a failed condition. The control section is configured to carry out a fail-safe shift-actuator fixing control to fix the shift actuator, when the fail determining section determines that the shift actuator is under the failed condition, and is configured to carry out a fail-safe hydraulic control to bring the line pressure to its upper limit pressure and bring the secondary pressure to its maximum pressure, when a control-start criterion predetermined to secure driving performance of the vehicle is satisfied under the failed condition.
摘要:
A plurality of TEM mode transmission lines (L2-L5) are structured by pairs of thin film conductors (21 and 22, 22 and 23, 23 and 24, and 24 and 25) which sandwich thin film dielectrics (31 to 34) by alternately stacking the thin film conductor (21 to 25) and the thin film dielectric (31 to 34). The phase velocities of TEM mode waves which are propagated at least by two of the transmission lines (L2 to L5) are substantially equal to each other. The thickness of each of the thin film conductors (21 to 25) is smaller than the skin depth of the frequency used so that the electromagnetic fields of at least two TEM mode transmission lines among the TEM mode transmission lines (L2 to L5) are coupled to each other. In this way, the skin depth can be increased effectively. The conductor loss and the surface resistance can be reduced significantly as compared to those of the conventional electrode. By use of this electrode, a transmission line, a resonator, a filter, and a high frequency device are structured.
摘要:
A high-frequency integrated circuit which operates in a microwave band or in a millimeter wave band. The high-frequency integrated circuit has a plurality of devices with respective nonradiative dielectric waveguides such as an oscillator, a coupler, etc., and a substrate on which these devices are surface-mounted. Each of the devices has a pair of parallel conductors, a dielectric strip which is disposed between the conductors and propagates a high-frequency electromagnetic wave, a mounting surface which is formed on one of the conductors and is in contact with the substrate, and an end surface which is defined by an end of the conductors so as to be vertical to a traveling direction of the electromagnetic wave propagated in the dielectric strip and at which an end of the dielectric strip is exposed. The devices with a nonradiative dielectric waveguide are evaluated separately, and thereafter, the devices are surface-mounted on the substrate close to or in contact with one another.
摘要:
A dielectric ceramic composition for high frequencies consisting essentially of 83 to 99.8 wt% of a basic composition composed of 22 to 43 wt% of titanium dioxide, 38 to 58 wt% of zirconium dioxide and 9 to 26 wt% of stannic oxide, and 0.2 to 17 wt% of one or two addditives selected from the group consisting of lanthanum oxide, cobaltic oxide and zinc oxide. The dielectric ceramic composition has high permittivity and high Q and is suitable for use as dielectric resonators in microwave bandpass filters, or as antennas employed at microwave frequencies, or as substrates for microwave circuits.
摘要:
A communication module for a vehicle including an automobile, a vessel or the like, the communication module being disposed on a back side or inside of an identification plate of the means of transportation. The communication module is formed of a millimeter wave integrated circuit section and a plane antenna section. The millimeter wave integrated circuit section has two conductive plates arranged in parallel with each other, and a dielectric stripline and an electric element disposed between the conductive plates. The plane antenna section has two conductive plates arranged in parallel with each other, a dielectric stripline disposed between the conductive plates and a slot made in one of the conductive plates. At least a respective one of the conductive plates of the millimeter wave integrated circuit section and a respective one of the conductive plates of the plane antenna section are integrated in a plane. The identification plate is made of a material which transmits a millimeter wave with a small loss, for example, polycarbonate, polybutylene terephthalate, polypropylene reinforced with glass fiber, ABS resin or the like.
摘要:
An antenna includes a cylindrically shaped dielectric resonator placed on a longitudinally extended axis of an elongated dielectric strip disposed on a planar conductor and another planar conductor having an opening covers the dielectric strip with the opening on the dielectric resonator. There may be another dielectric strip placed perpendicularly to the first dielectric strip such that the dielectric resonator is where the lines longitudinally extended from the axes of both dielectric strips will cross.