摘要:
A sound absorber comprises a layer of a composition of a heat resistant binder and a low temperature oxidizing catalyst which is coated on a porous metal substrate in the hardened form.
摘要:
A muffler of the absorption type for the exhaust gas of an internal combustion engine including a cylindrical porous sound-absorbing body 1, and a film 5 of a metal or other material formed cylindrically on the inner surface of the porous body 1. The film prevents clogging of the pores in the porous body and enables the absorption of the sound in a wide frequency range.
摘要:
A muffler for exhaust gases of an internal combustion engine. The muffler is a hybrid consisting of gas expansion chambers defined by partitions in a muffler casing, and a sound-absorbing body. The sound-absorbing body includes a perforated pipe surrounded by a porous sound-absorbing material with a thin metal film sandwiched therebetween.
摘要:
A sound absorber comprises a layer of a composition of a heat resistant binder and an acidic solid catalyst which is coated on a porous metal substrate in the hardened form.
摘要:
A muffler for exhaust gases of an internal combustion engine. The muffler is a hybrid consisting of gas expansion chambers defined by partitions in a muffler casing, and a sound-absorbing body. The sound-absorbing body includes a perforated pipe surrounded by a porous sound-absorbing material with a thin metal film sandwiched therebetween.
摘要:
A mounting board has a board, retaining members mounted on the upper surface of the board, and a part retained by the retaining members. The part is mounted such that at least a part thereof is arranged below the lower surface of the board, and that the part is electrically connected to the board through the retaining members. Such an arrangement as described above eliminates the need of connecting the discharge gap element to the board by using lead wires, and of mounting it on the upper surface of the board. This lowers the height of the board and admits an elevated part.
摘要:
A valve timing adjusting device has a lock mechanism for restricting a rotational motion of an internal rotor 7 relative to an external rotor 5. The lock mechanism has a plunger 45, which is movable along a radial direction of the external rotor 5 and restricts the rotational motion of the internal rotor 7 relative to the external rotor 5 on condition that the prevention of the rotational motion of the internal rotor 7 relative to the external rotor 5 is removable, a receiving hole 7a, which is arranged on an outer circumferential surface of the internal rotor 7 and receives the plunger 45, a spring 21, which presses the plunger 45 inwardly along the radial direction of the external rotor 5 by a prescribed pressure, a holder 46, which determines a position of the spring 21, and a knock pin 47 which prevents the holder 46 from being moved outwardly along the radial direction of the external rotor 5.
摘要:
A vane type hydraulic actuator, wherein a chip seal 1, as a seal element between the case 43 and the rotor 44, can be pressed to contact tightly with the counter surface, without using a spring 47 as in the prior art, when a working oil is supplied either from the oil pressure chambers for timing retard or for timing advance. Simultaneously, the locking between the rotor 44 and the case 43 can be released. The hydrodynamic resistance at the gap between the tip of the seal element (chip seal) 1 and the counter surface of the seal element is made larger than that at the gap between the flank of the seal element 1 and the flank of the seal groove 2, which accomodates the seal element, so that the working oil of the hydraulic actuator flows between the flanks. The working oil at the bottom of the seal element urges the seal element to contact tightly with the counter surface. An oil channel 6 connects the bottom of the seal groove and a stopper pin holding hole 4, which holds a stopper pin 3 pressed by a spring 5. When a working oil is supplied from either of oil pressure chambers for timing retard or advance, the channel 6 opens to supply a working oil into the stopper pin holding hole 5 so as to displace the pin against the biasing force of the spring 5 to release the suppression of rotation.
摘要:
A rotary hydraulic actuator including a sealed vessel including brackets and a casing, a partition vane attached to a shaft supported by the brackets for dividing an inside of the sealed vessel into a first pressure chamber and a second pressure chamber and pivoting the shaft by a pressure difference between the first and the second pressure chambers, suction and exhaust hydraulic ports and a drain port installed to the casing, a hydraulic control valve mounted to the casing for conducting a hydraulic control along with the suction and exhaust hydraulic ports and the drain port, groove-like hydraulic pressure supply paths installed to a face of one of the brackets in contact with the casing for communicating the first pressure chamber and the second pressure chamber respectively to the suction and exhaust hydraulic ports and a groove-like drain path installed to a face of other one of the brackets in contact with the casing for communicating to the drain port.
摘要:
A shielding wire is provided with a first conductor, a shield for sheathing the first conductor through an insulating member, and a second conductor which is in contact with the shield. Therefore, a troublesome step of unknitting the braid of the shield is eliminated, and the work is done at a higher efficiency and the manufacturing cost is reduced.