Abstract: The present invention pertains to the field of catalyst and catalytic reactions. Specifically, the invention provides for new catalytically active compositions of matter, to methods of manufacturing them and to the use of such compositions.

Abstract: A combustion chamber injection nozzle (12) having a plurality of injection channels (37) for a main fuel gas, a pre-combustion chamber, and a plurality of torch channels (52) for hot combustion gas connected to the pre-combustion chamber (15), the injection channels (37) and the torch channels (52) communicating with peripheral openings arranged next to one another so as to alternate in a circumferential direction.

Abstract: A fuel gas feed and ignition apparatus for a gas engine (1) with a combustion chamber includes a number of injection channels (37), a main fuel gas feed line (24) for main fuel gas in which a main fuel gas valve (21) is arranged, and a number of torch channels (52) for hot combustion gas connected to a pre-combustion chamber (15), wherein an ignition fuel supply line (17) leads to the pre-combustion chamber (15) and a pre-combustion chamber valve (18) is arranged in the ignition fuel supply line (17). Control of both the time and the duration and thus also the quantity of the injection of main fuel gas, as well as of ignition fuel for the pre-combustion chamber completely independently of one another and in a precise and, above all, rapid manner is achieved in that both the main fuel gas valve (21) and the pre-combustion chamber valve (18) are embodied as an electrically-actuated, electronically-controlled valve.

Abstract: For a fuel gas feed and Ignition apparatus for a gas engine (1) with a combustion chamber injection nozzle (12) in which a number of injection channels (37) are provided for a main fuel gas, and the injection channels (37) are connected to a main fuel gas feed line (24) for main fuel gas in which a main fuel gas valve (21) is arranged, and in which combustion chamber injection nozzle (12) are also provided a number of torch channels (52) for hot combustion gas and the torch channels (52) are connected to a pre-combustion chamber (15) in the fuel gas feed and ignition apparatus (10), wherein an ignition fuel supply line (17) leads to the pre-combustion chamber (15) and a pre-combustion chamber valve (18) is arranged in the ignition fuel supply line (17), control of both the time and the duration and thus also the quantity of the injection of main fuel gas, as well as of Ignition fuel for the pre-combustion chamber completely independently of one another and in a precise and, above all, rapid manner is achieved

Abstract: In order to achieve reliable, well-controlled and fast diffusion combustion in an air-intake gas engine, a combustion chamber injection nozzle (12) is proposed over whose periphery is distributed a plurality of injection channels (37) for a main fuel gas and a plurality of torch channels (52) for hot combustion gas that are connected to the pre-combustion chamber (15), wherein the injection channels (37) and the torch channels (52) are arranged next to one another so as to alternate in the circumferential direction.

Abstract: Conventional spark-ignited gas engines with a mechanically controlled fuel feed valve have several disadvantages in terms of operation, expensive control, irregular combustion or unstable and unreliable operation, which in turn can lead to operational and mechanical problems. In order to eliminate these disadvantages it is suggested, according to the invention, that a controlled valve is installed in the fuel line upstream of the fuel feed valve so that in the fuel line between fuel feed valve and controlled valve a defined intermediate volume is created and gaseous fuel is fed via the controlled valve into the intermediate volume.

Abstract: A spring cup in an automatic suction and pressure valve has an internal contour which opens in the shape of a calotte so as to reduce wear at the ends of a valve spring positioned in the spring cup and thereby lengthen its useful life.

Abstract: A metallic separating plate 6 is arranged between the sealing rings 5 and the synchronizing plate 7 to prevent mutual wear of the sealing rings 5 and the synchronizing plate 7 in an annular valve having sealing rings 5 as sealing elements and a synchronizing plate 7 to synchronize and dampen the ring opening movement.

Abstract: In a reciprocating compressor with delivery rate control the actuation device (3) for the valve unloader (2) of the suction valve (1) to be held open comprises as drive an electric motor (5), whose driven element (6) in conjunction with the non-rotating lifting element (10) of the valve unloader (2) and the rolling elements (8) arranged in between forma ball screw drive. This results in a small-dimensioned, precisely to be regulated actuation device (3) with high actuating forces and with high motion dynamic.

Abstract: Conventional spark-ignited gas engines with a mechanically controlled fuel feed valve have several disadvantages in terms of operation, expensive control, irregular combustion or unstable and unreliable operation, which in turn can lead to operational and mechanical problems. In order to eliminate these disadvantages it is suggested, according to the invention, that a controlled valve is installed in the fuel line upstream of the fuel feed valve so that in the fuel line between fuel feed valve and controlled valve a defined intermediate volume is created and gaseous fuel is fed via the controlled valve into the intermediate volume.

Abstract: Conventional spark-ignited gas engines with a mechanically controlled fuel feed valve have several disadvantages in terms of operation, expensive control, irregular combustion or unstable and unreliable operation, which in turn can lead to operational and mechanical problems. In order to eliminate these disadvantages it is suggested, according to the invention, that a controlled valve is installed in the fuel line upstream of the fuel feed valve so that in the fuel line between fuel feed valve and controlled valve a defined intermediate volume is created and gaseous fuel is fed via the controlled valve into the intermediate volume.

Abstract: In order to reduce the wear at the spring ends of the valve spring arranged in a spring cup to the greatest possible extent and to increase the lifetime, in particular of the valve springs, the invention proposes to form the internal contour 22 of the spring cup 17 so as to open in the shape of a calotte.

Abstract: A metallic separating plate 6 is arranged between the sealing rings 5 and the synchronizing plate 7 to prevent mutual wear of the sealing rings 5 and the synchronizing plate 7 in an annular valve having sealing rings 5 as sealing elements and a synchronizing plate 7 to synchronize and dampen the ring opening movement.

Abstract: Simple refinishing of the valve seat 3 of an annular valve 1 is made possible, which has a plurality of ring guide studs 15 arranged radially and separated in circumferential direction and projecting from said valve seat 3 to guide sealing rings 5 in radial and axial direction, whereby a recess 18 is provided in the valve seat 3 extending in circumferential direction between to ring guide studs 15 lying at the same radius. No cross piece negatively influencing the outgoing flow must remain between the sealing surfaces 17 in the area of the recess 18 during refinishing of said sealing surfaces 17 of the valve seat 3.

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: Large opening cross-sections, long switching strokes and short switching periods are of significance in gas valves for feeding gaseous fuel into the combustion chamber of a reciprocating internal combustion engine and to enable injection of the required quantity of gas into the combustion chamber within the very short available time. An additional means is provided to at least temporarily create additional forces biasing the closing member independent from the forces acting upon the closing member whereby the existing force relationship between the closing spring and the opening solenoid can be especially influenced.

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: 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.