摘要:
In a contactless ignition control system having a dwell time control circuit for an internal combustion engine, there is provided a speed responsive bias voltage circuit, a bias voltge switching circuit and a wave shaping circuit. The speed responsive bias voltage changes the switching level of the wave shaping circuit, thereby elongating the dwell time of the current flowing through an ignition coil.In the dwell time control, when the ignition timing comes, the bias voltage switching circuit prevents application of the speed responsive bias voltage so that the ignition timing is made irrespective of the speed responsive bias voltage.
摘要:
In the present invention, when an organopolysiloxane is produced by a dealcoholization condensation reaction between a silicon atom-bonded hydroxy group and a silicon atom-bonded alkoxy group, a quaternary ammonium ion-containing compound such as an alkylammonium hydroxide compound or a silanolate thereof is used as a catalyst. The catalyst for the dealcoholization condensation reaction of the present invention is easily removed after use and is stable. For this reason, when an organopolysiloxane is produced using the aforementioned catalyst, it is not necessary to use complicated production steps or a large amount of the catalyst.
摘要:
A power transmission device comprises a propeller shaft (PS) and a rear axle device (AR) that is linked and transmits rotational drive force. In the structure linking the propeller shaft and the rear axle device, a first mark indicating the direction of rotational imbalance in the propeller shaft is provided to the propeller shaft, a second mark is provided to a companion flange (30) linked to the propeller shaft in the rotation transmission device, for indicating the direction of rotational imbalance in the companion flange (30), and the propeller shaft and the companion flange are linked on the basis of the first and second marks.
摘要:
The production of organoxy-functional silanes is carried out by the reaction of (A) halosilanes and (B) hydroxy compounds in the presence of (C) a polymer that includes carbon-bonded fluorine. The presence of (C), the polymer that includes carbon-bonded fluorine, acts to decrease foaming during the reaction and minimizes the production of siloxane oligomer by-products.
摘要:
In the present invention, when an organopolysiloxane is produced by a dealcoholization condensation reaction between a silicon atom-bonded hydroxy group and a silicon atom-bonded alkoxy group, a quaternary ammonium ion-containing compound such as an alkylammonium hydroxide compound or a silanolate thereof is used as a catalyst. The catalyst for the dealcoholization condensation reaction of the present invention is easily removed after use and is stable. For this reason, when an organopolysiloxane is produced using the aforementioned catalyst, it is not necessary to use complicated production steps or a large amount of the catalyst.
摘要:
A hydrosilation method comprising contacting a silicon hydride with an unsaturated reactant in the presence of a catalysts selected from the group consisting of amine borane complexes and phoshineborane complexes. The catalysts are especially useful for selectively hydrosilating unsaturated organic compounds with an internal unsaturated bond to increase the desired hydrosilation product yield.
摘要:
In a distributor assembly having an ignition coil therein, for use with an internal combustion engine, the positional relationship between the ignition coil and a magnetic sensitive detector, which detects a proper ignition timing, is selected so that the leakage flux from the ignition coil does not cause the magnetic sensitive detector to malfunction. According to one arrangement the magnetic sensitive direction of the detector is arranged perpendicular to the leakage flux from the ignition coil. According to the other arrangement the magnetic sensitive direction of the detector is arranged to intersect a radial line from the axis of the main magnetic flux of the ignition coil at an angle other than 90 degrees so that the flux variation in the detector is expedited by the appearance and disappearance of the leakage flux. In the both arrangements, the axis is arranged parallel to a rotary shaft to which a signal rotor is attached, where the rotation of the signal rotor is arranged to cause the detector to change its output signal by detecting the variation in magnetic flux.
摘要:
A paper tube of a propeller tube 12 is made by winding a single faced corrugated fiberboard 16 in which a wavy corrugating medium 16b is fixed to one side of a flat linerboard 16a so that the corrugating medium 16b is oriented outwards, and the corrugating medium 16b contacts with an inner surface of the propeller tube 12, so as to enhance a vibration controlling function. When winding the single faced corrugated fiberboard 16, since the single faced corrugated fiberboard 16 cannot be wound in a direction oblique to a direction of ridges of the corrugating medium 16b, there are no fears that the shape of the single faced corrugated fiberboard 16 is collapsed to taper axially, thereby it becomes possible to prevent a reduction in vibration controlling function that would otherwise be caused due to a change in the shape of the paper tube.
摘要:
A first mark for indicating the direction of the rotational unbalance of a propeller shaft is provided on the propeller shaft while a second mark for indicating the direction of the rotational unbalance of a companion flange is provided on the companion flange, which is to be connected to the propeller shaft at a rotation-transmitting device. One of the directions of the rotational unbalances indicated by the first mark and the second mark is set as a direction along which the rotating mass becomes larger while the other is set as a direction along which the rotating mass becomes smaller, and one of the first mark and the second mark is provided over an angular region with a predetermined angle around an axis.
摘要:
According to the present invention, a method of preparing a silacycloalkane, comprising the steps of (A) adding a substituted silacycloalkane having the formula: wherein X1 is —F, —Cl, —Br, or —OR1 and X2 is X1 or H, wherein R1 is C1-C8 hydrocarbyl, and n is 1, 2, or 3, to a suspension of lithium aluminum hydride in a glycol diether at a temperature not greater than 50° C. to form a mixture, wherein the glycol diether consists essentially of a linear arrangement of oxyalkylene units having formulae independently selected from —OCH2CH2—, —OCH2CH(CH3)—, and —OCH2CH(CH2CH3)—, and end-groups having the formulae —R2 and —OR2, wherein each R2 is independently selected from C1-C8 alkyl, phenyl, and C1-C8 alkyl-substituted phenyl, provided the glycol diether has a normal boiling point of at least 85° C. and a viscosity not greater than 3000 mm2/s at 25° C.; and (B) distilling the mixture under reduced pressure at a temperature not greater than 50° C. to remove the silacycloalkane.