Abstract: A fluid control valve that includes an electromagnetic actuator in the form of a pot-shaped magnet (7) as well as an armature plate (6) controllable by the actuator, said armature plate including a closing member (5) cooperating with a valve seat (17, 18). The armature plate (6) is compensated in pressure through a connecting passage (19) within the closing member (5) whereby the pressurized coil chamber (20) of the actuator is pressure sealed to the outside with its cover 13 which is made in one piece with the magnet housing (8) to be able to employ the valve also in the high-pressure range.

Abstract: An electromagnetically actuated gas valve (5) for gas engines (4) includes a valve seat (13) that has at least one flow-through opening (14) and a corresponding sealing plate (15), with the sealing plate being movably arranged and guided essentially perpendicularly relative to the valve seat (13), with barrier surfaces (16) and discharge openings (17). The sealing plate (15) is loaded against the valve seat (13) by means of a return spring (25) and can be lifted for the purpose of opening it via a solenoid (21). In order to allow for the secure sealing and easy switchability even in the presence of the effect of the combustion chamber pressure, the sealing plate (15) is arranged on the discharge side of the valve seat (13) and connected by means of a stamp (29), which extends through the valve seat (13), with the anchor plate (28) of the solenoid (21).

Abstract: In sealing elements (3, 3?, 3?) made of synthetic material (14) having embedded fiber reinforcement (11), as it has been used for some time for automatic compressor valves, the fiber reinforcement (11) consists of at least one piece of an essentially flat, non-woven fiber fabric (12), which has, at least in its plane, a directionally independent (random) fiber orientation. Disadvantages of short-fibered reinforced synthetic materials can thereby be avoided, as well as the ones for synthetic materials reinforced by means of long-fibered fabrics, and sealing elements (3, 3?, 3?) may be obtained thereby having a very high durability.

Abstract: In sealing elements (3, 3?, 3?) for automatic compressor valves, composed of synthetic material (12) having embedded fiber reinforcement (11), the fiber reinforcement (11) and/or the surrounding synthetic material (12) in the finished sealing element (3, 3?, 3?) has an inhomogeneous distribution and/or locally different material characteristics under consideration of different local requirements.

Abstract: A stationary arranged sensor (4) is provided in the region of one of the dead centers of the piston movement to monitor the position of the path of motion of a piston (1) relative to a cylinder (2) whereby the sensor (4) measures the lateral distance (a) to an indicator unit (6) arranged on the piston (1). The sensor (4) is arranged in a recessed position relative to the inner surface of the cylinder (2) and is sealed toward the cylinder chamber (9) by means of a cover (8), and the indicator unit (6) on the piston (1) is designed as an anomaly (10) that is non-sensitive to contaminating deposits in the area of the face (11) of the piston (1).

Abstract: An electromagnetically actuated gas valve (5) for gas engines (4) includes a valve seat (13) that has at least one flow-through opening (14) and a corresponding sealing plate (15), with the sealing plate being movably arranged and guided essentially perpendicularly relative to the valve seat (13), with barrier surfaces (16) and discharge openings (17). The sealing plate (15) is loaded against the valve seat (13) by means of a return spring (25) and can be lifted for the purpose of opening it via a solenoid (21). In order to allow for the secure sealing and easy switchability even in the presence of the effect of the combustion chamber pressure, the sealing plate (15) is arranged on the discharge side of the valve seat (13) and connected by means of a stamp (29), which extends through the valve seat (13), with the anchor plate (28) of the solenoid (21).

Abstract: For stepless capacity control of a reciprocating piston compressor, an unloader (2) arranged on a suction valve (1) keeps open said suction valve (1) over a thereby controllable portion of the working cycle of the compressor by means of an unloading piston (4) biased by gas pressure via a control valve (3). The gas pressure biasing the unloading piston (4) is always above the gas pressure required to overcome the maximum possible reverse flow force, whereby a controllable partial discharge of the unloading cylinder (6) is performed in each phase of the working cycle up to the closing of the suction valve (1) by means of the control valve (3), which is designed to switch rapidly. The theoretical discharge time of the entire discharging volume for the partial discharge is preferably maximal nearly equal or even less than twice the duration of the working cycle.

Abstract: A stationary arranged sensor (4) is provided in the region of one of the dead centers of the piston movement to monitor the position of the path of motion of a piston (1) relative to a cylinder (2) whereby the sensor (4) measures the lateral distance (a) to an indicator unit (6) arranged on the piston (1). The sensor (4) is arranged in a recessed position relative to the inner surface of the cylinder (2) and is sealed toward the cylinder chamber (9) by means of a cover (8), and the indicator unit (6) on the piston (1) is designed as an anomaly (10) that is non-sensitive to contaminating deposits in the area of the face (11) of the piston (1).

Abstract: In sealing elements (3, 3′, 3″) for automatic compressor valves, composed of synthetic material (12) having embedded fiber reinforcement (11), the fiber reinforcement (11) and/or the surrounding synthetic material (12) in the finished sealing element (3, 3′, 3″) has an inhomogeneous distribution and/or locally different material characteristics under consideration of different local requirements.

Abstract: In sealing elements (3, 3′, 3″) made of synthetic material (14) having embedded fiber reinforcement (11), as it has been used for some time for automatic compressor valves, the fiber reinforcement (11) consists of at least one piece of an essentially flat, non-woven fiber fabric (12), which has, at least in its plane, a directionally independent (random) fiber orientation. Disadvantages of short-fibered reinforced synthetic materials can thereby be avoided, as well as the ones for synthetic materials reinforced by means of long-fibered fabrics, and sealing elements (3, 3′, 3″) may be obtained thereby having a very high durability.