摘要:
An electric centrifugal switch is proposed, in particular for the purpose of safety shutoff upon attainment of a shutoff rpm for fuel injection systems, electrically controlled in an open- or closed-loop manner, of internal combustion engines, which is not vulnerable to rotary oscillations and which effects a rapid shutoff. The centrifugal switch comprises a centrifugal pendulum secured by means of a metal band bearing on a revolving carrier element and a switch attached to the housing and provided with a switching distance from an actuation pin. The centrifugal pendulum carries a flyweight mass on the end of a first lever arm extending substantially in the direction of the rotary axis, and its second lever arm extending at least approximately rectangularly to the rotary axis, is held together with a metal band of the band bearing in constant contact on a roll-off surface located on the carrier element by a restoring spring and, in a preferred embodiment, by means of a supplementary spring element. The inclination and spring rate of the obliquely positioned restoring spring are so designed that the increase in spring force when the centrifugal pendulum is swinging outward is less than the corresponding increase in centrifugal force.
摘要:
The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.
摘要:
A pressure regulating valve for activating a clutch in a motor vehicle automatic transmission, having a housing having a first transverse opening which acts as a fluid inlet, and a second transverse opening which acts at least temporarily as a fluid outlet, the two transverse openings being spaced axially from one another, and having a valve slide guided in the housing, the valve slide including an axially extending recess in its circumferential surface, the recess fluidically connecting the two transverse openings to one another in a first axial position of the valve slide and separating them from one another in a second axial position, in the circumferential surface of the valve slide the recess having a face having an undercut at its end closest to the second transverse opening.
摘要:
The invention relates to a pressure control valve (10) having a magnet coil (16) which is accommodated in a coil body (18). The pressure control valve (10) comprises an armature (26) which can move relative to a pole piece (20) for actuating a valve closing element (36). A magnetic circuit (48) is formed in the pressure control valve (10), which magnetic circuit (48) comprises at most three components (20, 26, 50) which together form magnetic transitions (72, 74) which are oriented in the axial direction.
摘要:
An assembly for feeding fuel form a supply tank to an internal combustion engine, with a feed pump which is designed as a flow pump and the disk-shaped impeller of which rotates in rotation in a cylindrical pump chamber delimited by a suction cover and by an intermediate housing bearing on the latter and at the same time feeds fuel from a suction port in a suction cover to a delivery port in the intermediate housing to enlarge the production tolerances of a fit between the suction cover (7) on the intermediate housing, and in order to allow the two pump components to lift off from one another during the operation of the feed pump in order to flush out dirt particles from the pump chamber, the suction cover and the intermediate housing are braced relative to one another by means of a resilient connecting element and the suction cover and intermediate housing are permitted to move relative to each other in order to flush dirt from an area of the pump impeller.
摘要:
Support components or supports for supporting calender rolls for treating web-shaped materials comprise walls which surround a roll stand of the calender and are slidably arranged at guideways provided at the roll stand. Each support component supports an associated calender roll having a predetermined diameter, and a predetermined support length of each support component in a predetermined direction of the guideways is greater than the predetermined diameter of the associated calender roll. The walls of adjacent support components define a predetermined numbr of pairs of mutually facing edges. At least one pair of mutually facing edges between two adjacent support components contains projections and complementary shaped recesses. When such two adjacent support components are slidably displaced toward one another, the projections extend into the correspondingly structured complementary shaped recesses. By virtue of the predetermined support length of the support components being greater than the average predetermined roll diameter, there is substantially prevented a canting or jamming of the support components during displacement thereof along the guideways.
摘要:
The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.
摘要:
The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system comprises at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. Moreover, sealing means for sealing the open ends of the bearing gap are provided. According to the invention, one of the sealing means comprises an annular sealing gap that has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.
摘要:
The invention is based on an apparatus (10) for regulating the pressure in a hydraulic circuit that comprises an electrically triggerable pressure-control valve (12), a receptacle device (14) in which the pressure-control valve (12) is installed, and means (54, 64) for damping pressure pulsations. In order to save space, simplify the manufacture of the receptacle device (14), and save additional holding elements, it is proposed according to the invention that the means (54, 64) for damping pressure pulsations be designed as integral components of the pressure-control valve (12).