摘要:
Magnetic valves having sealing and damping members having an elastic zone which is subject to a force caused by different pressures when they are operated, said force having to be additionally overcome when the armature plate is moved, are known from the art. The inventive magnetic valve (1) is characterized by a sealing and damping element (46) having an elastic zone that is designed and disposed to give a sealing seat (103) adapted to compensate the above-described force, thereby achieving a better characteristic curve of the magnetic valve (1) across the applied differential pressure.
摘要:
A prior art actuator has a ferromagnetic circuit consisting of three parts. In addition, realizing an armature travel with a constantly high magnetic force over large travels requires a high degree of complexity. In contrast, an inventive actuator (1) comprises two parts in the ferromagnetic circuit and has a simple structure. A magnetic return element (3) has an offset (90), which influences the magnetic flux direction (60) according to the position of an armature (9), whereby achieving a constantly high magnetic force over the entire travel and thus obtaining a flat magnetic force-travel course.
摘要:
The invention relates to a valve for the controlled introduction of volatilized fuel. According to the invention, a solenoid valve, especially for the tank ventilation of motor vehicles with a return yoke (22), has at least one valve opening (25, 52) and an interacting, spring-biased valve member (27) which releases and closes the at least one valve opening (25, 52). Said valve member forms the armature of an electromagnet (13) and is arranged between the return yoke (22) of the electromagnet (13) and a hollow cylindrical magnet core (15) of the electromagnet (13). Said valve is characterized in that a valve seat body (50, 51) is arranged in an opening (220). Said valve seat body is axially arranged in the return yoke (22), is separate from the return yoke (22) and is provided with the at least one valve opening (25). Said valve seat body, with the side facing away from the valve member (27), rests against the wall of the housing (102) of the solenoid valve via a bearing element (60, 61) which consists of damping material.
摘要:
In a prior art tank venting valve, especially with pulsed control of an electromagnet adjusting the position of the tank venting valve, undesirable operating noises can arise owing to contact between relatively moving metal components, and this is to be prevented. The valve closer (37) has at least one damper (35) which axially completely passes through the valve closer (37) and forms a first damping surface (40) directed towards the valve seat (27) on the first face (38) of the valve closer (37) and a second damping surface (41) directed towards the electromagnet (13) on the second face (39) of the valve closer (37) so as to prevent or damp any impact of the valve close (37) on the valve seat (27) or on the magnet core (15). The tank venting valve of the invention is suitable for the metered supply of vaporised fuel from the fuel tank of a compressed-mixture, spark ignition internal combustion engine to one of its inlet pipes.
摘要:
The invention relates to a flap valve for controlling a gaseous flow, comprising a valve tube (13) which conducts said gaseous flow and a valve flap (14) which is arranged therein and which can pivot between a closed position and an open position, whereby said flap is rotationally fixed on an adjustable flap shaft (15). In order to prevent said shaft from rupturing within the valve tube (13) inside the sealed area between the valve flap (14) and the valve tube (13), the shaft of the flap (15) is oriented in such a way that the axis (17) thereof forms an acute angle (α) with the axis (18) of the valve tube (13). The valve flap (14) which is rotationally fixed to the shaft (15) of the flap is oriented in such a way that when it is closed, the surface normal thereof is aligned with the axis (18) of the valve tube (13) or runs at an acute angle thereto.
摘要:
The invention relates to a solenoid valve, more particularly, for tank ventilation in motor vehicles, comprising at least one valve opening forming a sealed seat (103) and a valve member (20) for opening and closing the at least one sealed seat (103) and cooperating with the latter, said valve member being spring-loaded by electromagnets against the restoring force of a readjusting spring (30). The invention is characterized in that a flow element (70) throttling the flow of a gas is mounted downstream from the valve member (20), the configuration of said flow element matching the cross section of the opening of the sealed seat (103) that cooperates with the valve member (20) for determining (dosing) the flow rate of the gas through the cross-sectional area of the flow element (70) when the solenoid valve is open in such a way that the surface of the cross section of the opening of the effective valve seat is 2.5 times bigger, preferably more than 9 times bigger, than the surface of the effective cross-sectional area of the flow element (70).
摘要:
The known types of fuel tank ventilation valve that are provided with a Laval nozzle pose a problem concerning the fine flow rate control since the inlet section of the nozzle is directy covered by a valve portion. The present invention relates to a valve whose seat (37) is part of the valve support (31) having at least one opening (34) which can be closed by said support (36). The cross section of said opening is substantially smaller than that of the Laval nozzle inlet (60), which is mounted to the opening at a distance thereof. The inventive valve is designed so as to enable a proportioned supply of fuel from an internal combustion engine with compressed mixture and spark ignition into an admission pipe in said engine.
摘要:
The aim of the invention is to obtain an electrical governor, preferably for controlling the combustion air in an internal combustion engine, which is simple and compact. At the same time, fluid leakages are to be reduced. To this end, the armature (31) of the control motor also functions as a fluid-carrying throttle element. The stator (11) and windings (12) of the control motor are cast into a plastic housing (2) and sealed from the interior (10) of the governor (1). The armature (31) is rotatably mounted in the interior and is axially adjustable. The armature has recesses (37) which communicate with channels (5, 25) in the housing (2). The gap between the armature (31) and a control opening (28) on the channel (25) can be adjusted by means of a threaded pin (35).
摘要:
A prior art actuator has a ferromagnetic circuit consisting of three parts. In addition, realizing an armature travel with a constantly high magnetic force over large travels requires a high degree of complexity. In contrast, an inventive actuator (1) comprises two parts in the ferromagnetic circuit and has a simple structure. A magnetic return element (3) has an offset (90), which influences the magnetic flux direction (60) according to the position of an armature (9), whereby achieving a constantly high magnetic force over the entire travel and thus obtaining a flat magnetic force-travel course.
摘要:
In a conventional fuel injection device with injectors, connected to a common pressure maintaining valve by means of a low pressure reservoir, the low pressure reservoir is filled by means of a relatively costly electronically controlled pressure regulation valve and maintained at a constant pressure by means of a pressure maintaining valve. The valve (9), as disclosed, integrates two valves in parallel within one valve, whereby the first is a pressure release valve and opens in the direction of an oil leakage line and the second is a non-return valve opening in the direction of the low pressure reservoir. According to the invention, two valve seats (32,40) and two closing bodies (35,39) are provided in the valve (9) whereby the second valve seat (40) is provided on the first closing body (35).