摘要:
An electric power generation control apparatus for a vehicle alternator mounted on a motor vehicle performs one of a constant output voltage control a constant torque control and a constant exciting current control in order to suppress a hunting phenomenon of the vehicle alternator. First of all, the electric power generation control apparatus performs the constant output voltage control when a rotation speed is within an idling rotation speed range or a periodic change of the rotation speed is not less than a predetermined value. After completion of the constant output voltage control, when judging that the idle hunting phenomenon is not adequately suppressed, the electric power generation control apparatus performs one of the constant torque control and the constant exciting current control.
摘要:
A rubber injection molding device comprising: a mold having a molding cavity therein; an injecting machine including an injection cylinder having an injection chamber for storing a rubber therein, and an injection plunger for injecting the rubber from the injection chamber into the molding cavity by means of an advancement of the injection plunger; a feed machine having a feed cylinder with a feed aperture formed at a tip end thereof and connected with the injection chamber through a feed duct, and being adapted to feed into the injection chamber, through the feed duct the rubber in a mixed state, and a pushing assembly which pushes into the injection chamber the rubber that remains within the feed duct after a feed operation of the rubber by the feed machine. A manufacturing method of a rubber product by using the molding device is also disclosed.
摘要:
There is provided a rubber composition containing the following components: (A): an ethylene-α-olefin-nonconjugated polyene copolymer rubber, (B): a natural rubber, (C): an organic peroxide, (D): an aromatic amine compound, and (E): an aluminum-based inorganic compound.
摘要:
A rubber composition comprising the following component (A) 30-95 parts by weight, component (B) 5-70 parts by weight, component (C) 0.1-15 parts by weight and component (D) 0.01-15 parts by weight, and comprising no reinforcing filler (where the total of component (A) and component (B) is 100 parts by weight). (A) Ethylene-α-olefin-unconjugated diene copolymer rubber (B) Natural rubber (C) Organic peroxide (D) Aromatic amine
摘要:
A vibration-proof rubber composition excellent in both characteristics of durability and compression set characteristic is provided. A vibration-proof rubber composition includes components (A) to (C) below, wherein an amount of reacted silane coupling agent in the component (B) is 6.5% by weight or more, and an amount of unreacted silane coupling agent is in a range of 0.5 to 2.5% by weight: (A) diene rubber; (B) pre-treated silica prepared by surface-treating, with a silane coupling agent, silica having a BET specific surface area in a range of 180 to 230 m2/g; and (C) sulfur.
摘要:
An antivibration rubber composition containing diene rubber (Component A) and silica (Component B). The amount of the Component B contained is set to a range from 10 to 100 parts by weight with respect to 100 parts by weight of the Component A. The Component B has the following properties, i.e., a surface silanol-group density of not less than 3.0 groups/nm2 as determined by the Sears titration method, an average particle size of not more than 10 μm, and a BET specific surface area of 15 to 60 m2/g.
摘要:
An antivibration rubber composition containing diene rubber (Component A) and silica (Component B). The amount of the Component B contained is set to a range from 10 to 100 parts by weight with respect to 100 parts by weight of the Component A. The Component B has the following properties, i.e., a surface silanol-group density of not less than 3.0 groups/nm2 as determined by the Sears titration method, an average particle size of not more than 10 μm, and a BET specific surface area of 15 to 60 m2/g.
摘要:
A control apparatus for controlling an exciting current of a field winding type dynamo-electric machine having an exciting winding so as to obtain a demanded output thereof comprises an exciting current detecting circuit being configured to detect an exciting current of the field winding type dynamo-electric machine, a rotation speed detecting circuit being configured to detect a rotation speed of a rotor of the field winding type dynamo-electric machine, an output estimating circuit being configured to estimate an output of the field winding type dynamo-electric machine, an exciting current control circuit being configured to correct the exciting current of the field winding type dynamo-electric machine so as to obtain the demanded output and to supply the corrected exciting current to an exciting winding of the field winding type dynamo-electric machine considering a multi-valued functionality of the output of the field winding type dynamo-electric machine with respect to the exciting current.
摘要:
A vibration damping rubber composition having an excellent vibration damping performance includes the following (A) to (C) as essential components: (A) a diene-based rubber; (B) a vulcanizing agent of a bismaleimide compound represented by the following formula (1): [wherein X denotes a substituted or unsubstituted aliphatic saturated hydrocarbon group; and R1 to R4 may be the same or different and each denote a hydrogen atom, an alkyl group, —NH2, or —NO2, provided that the bismaleimide compound represented by formula (1) excludes a compound in which X is —(CH2)n- (n is an integer of 4 to 12) and all R1 to R4 are hydrogen atoms], wherein the vulcanizing agent is sulfur-free; and (C) a vulcanization accelerator.
摘要:
A heat-resistant vibration damping rubber composition wherein 20-80 parts by weight of a powder of silica having a BET specific surface area of 20-70 m2/g is mixed with 100 parts by weight of an ethylene-propylene-diene rubber material, and a sulfur-containing silane coupling agent and a mercapto-based silane coupling agent are both mixed with the ethylene-propylene-diene rubber.