摘要:
The invention relates to a solenoid valve comprising a spring (6) that places the magnet armature (5) at a defined axial distance from the magnet core (3) in the position in which the valve is not electromagnetically excited such that the magnet armature (5) is separated from the magnet core (3) by an intermediate space. An annular disk-shaped spring element (4) that counteracts the movement of the magnet armature (5) is disposed within said intermediate space which is provided with a means (10) that promotes surrounding of the spring element (4) with a current independently of the switching position of the magnet armature (5).
摘要:
The invention relates to a pressure regulating valve, comprising a valve tappet (1) which is guided in a valve housing (3) and which accommodates a pressure spring (4). A valve closing member (10) arranged on the valve tappet (1) and corresponding to a valve seat (9) establishes a connection between a pressure feed line (11) coming from a pressure source and a pressure return line (12) when the pressure reaches a pre-set value. At least one polygonal friction element (2) which engages with the valve tappet (1) can be placed on the radial friction surface of the valve tappet (1) to reduce operating noise when the valve tappet (1) is used.
摘要:
The invention relates to a pump unit (1) that can be driven by an electric motor, in particular for providing vacuum for a pneumatic brake booster, comprising a pump housing (3) that can be closed by a working-chamber cover (2) and at least one elastic displacement element (4), wherein a working chamber (5) is bounded between the displacement element (4) and the working-chamber cover (2) and wherein inlet valves (6) and outlet valves (7) and inlet channels (8) and outlet channels (9) associated with the valves are associated with the working chamber. According to the invention, in order to reduce noise emissions, means for reducing a contact surface between the working-chamber cover (2) and the pump housing (3) are provided.
摘要:
The invention relates to a motor-pump aggregate 101, particularly for providing pressure for a brake actuation device of a motor vehicle brake system having a pneumatic brake force amplifier, comprising a pump 102 and an electric motor 103 driving the pump 102, wherein the pump 102 is provided as a double-membrane pump having two opposing working membranes 104, each of which is clamped between a pump housing 105 and a working chamber cover 106, thereby bounding a working chamber 107, and which can be displaced by means of a crank drive 108 comprising an eccentric 109 and a connecting rod 110, the working chamber 107 being associated with one of each of an inlet channel 111 having an inlet valve 112, and an outlet valve 113 having an outlet valve 114. In order to provide a motor-pump aggregate comprising a dry-running pump and accommodating high standards with regard to acoustic comfort and service life, and being improved with regard to the pump efficiency thereof, the invention proposes that the outlet channels 113 be disposed in the working chamber covers 106 and in the pump housing 105 such that the air forced out of the working chambers 107 is guided into an inner chamber 128 of the pump housing 105 encompassing the crank drive, and that an air outlet unit 129 be provided that allows low-noise expulsion of the air from the inner chamber 128 by deflecting the air.
摘要:
The invention relates to a motor-pump assembly 1, in particular for providing pressure for a brake actuating device of a motor vehicle brake system, having a pneumatic brake force booster, in particular a vacuum brake force booster, comprising a pump 2 and an electric motor 3 which drives the pump 2, wherein the pump 2 is provided as a double-diaphragm pump with two opposite working diaphragms 4, wherein outlet ducts 21 are provided so as to be arranged in working chamber covers 6 and in the pump housing 5 in such a way that air which is displaced out of working chambers 7 is conducted into an interior space 22, which surrounds a crank drive 8, of the pump housing 5, and that an air outlet unit 23, 53 is provided which enables the air to be blown out of the interior space 22 in a quiet fashion by deflecting the air, and wherein the air outlet unit 23, 53 comprises a filter housing 32, 54, a filter 33, 59, an air outlet cover 34, 56, a valve holding element 38, 70 and a valve body 31. To provide a quiet, reduced-cost motor-pump assembly which requires reduced assembly expenditure in comparison with the known generic unit, it is proposed according to the invention that an intermediate base 37, 55 is provided between the filter housing 32, 54 and the air outlet cover 34, 56, which intermediate base 37, 55 deflects the air emerging from the interior space 22 into the air outlet unit 23, 53, and that the valve holding element 38, 70 is integrally formed on the intermediate base 37, 55.
摘要:
In order to provide a motor/pump assembly (1, 101), comprising a dry-running pump (2, 102), which meets high requirements in relation to acoustic comfort, it is proposed according to the invention that the outlet channels (13, 113) are provided arranged in the working-space covers (6, 106) and in the pump housing (5, 105) in such a way that air which is expelled from the working spaces (7, 107) is routed into an inner space (28, 128) of the pump housing (5, 105), and that an air outlet unit (29, 129) is provided which makes low-noise expelling of the air possible from the inner space (28, 128).