Abstract: A safety valve arrangement for an installation operating with a pressure medium has a pressure medium input and a pressure medium output connected by a valve. The valve comprises a valve seat and a valve closing element. The valve closing element is moveable between an open position and a closed position and has an active surface that is subjected to the pressure medium in the opening direction of the valve. The valve closing element also has an auxiliary surface that is subjected to the pressure medium in the opening direction of the valve only when the valve closing element is lifted from the valve seat. A spring arrangement holds the valve closing element closed and the valve closing element moves from a closed position to an open position when the pressure medium acting upon the valve closing element is greater than the opposing force of the spring arrangement acting upon the valve closing element.

Abstract: A compressor with a cylinder head (33, 29) comprises a lower cylinder head section (33) and an upper cylinder head section (29) connected to each other. A seal (12) is provided between the faces of the lower cylinder head section (33) and the upper cylinder head section (29) facing each other. A suction space (31, 25) and a pressure space (10, 17) as well as a suction valve (32, 4) and a pressure valve (5, 7) are installed in the cylinder head (33, 29). A compression space (3) of the compressor is connected by the suction valve (32, 4) to the suction space (31, 25), and by the pressure valve (5, 7) to the pressure space (10, 17). The suction space (31, 25) is also connected by a suction connection (71) to the atmosphere, and the pressure space (10, 17) is connected to a consumer by a pressure connection (18) to a source of pressure.

Abstract: A fuel injection apparatus for an internal combustion engine and comprising a fuel injection pump, a fuel delivery pump for communicating fuel from a fuel tank to the suction chamber of the fuel injection pump, and cut-off device for cutting off the fuel flow to the injection nozzles of the internal combustion engine in case of a disturbance, said cut-off device comprising a spring-loaded accumulator connected with the suction chamber of the fuel injection pump and an electromagnetically actuated control valve for effecting a rapid cut-off, said control valve communicating the outlet of the delivery pump with the fuel tank in case of a disturbance, whereby the accumulator provides for reduction of pressure in the suction chamber of the fuel injection pump so that fuel does not flow to the internal combustion engine.

Abstract: A stop apparatus for a plate valve of a fluid compressor is provided. The stop apparatus is equipped with a wear-resistant insert so that the wear on some compressor components can be reduced.

Abstract: Fuel injection pump for internal combustion engines comprising at least one pump element consisting of a cylinder liner (2) and a pump plunger (3), and comprising a control slide (9) on the pump plunger (3) which is rotatable for the fuel control. The control slide (9) is axially displaceable for the purpose of changing the start of injection, wherein the axial displacement is effected by means of a rotating shaft (12) which is supported in the pump housing (1), at least one adjusting bolt (14) being fastenable at the rotating shaft (12) in its installation position by means of a fastening part (clamping nut 15) after adjustment.

Abstract: Fuel injection pump for internal combustion engines with several pump elements located inline, wherein the commencement of injection of each of these pump elements takes place by a control spool axially displaceable on the pump piston and by control of relief ducts provided at the pump working spaces of the pump, the control spools are operated by a torque shaft which is formed in two parts, the first shaft part is axially secured, and the second shaft part is guided so as to be sealed in a bearing bush located in the pump casing. The two shaft parts are pushed one into the other by means of a trunnion and a blind hole which receives the trunnion. The shaft parts are rotationally connected to one another by means of a claw clutch.

Abstract: A fuel injection pump for internal combustion engines having a plurality of pump elements 2, 3 disposed in a line, the injection quantity control of which is effected via a control slide 9 that is axially displaceable on the pump piston 9 and by controlling a relief conduit 22-25 of the pump work chamber 18, the control slides 9 being surrounded by partial suction chambers 8 that discharge into a main suction chamber 10 receiving a torque shaft 12 for axially actuating the control slides 9. These partial suction chambers 8 each have a separate partial inflow conduit 39 of defined length and cross section, which communicates with an inflow conduit 33, so that the same volumetric flow is metered to each partial suction chamber in the manner of quantity division, while the main suction chamber 10 is retained and the torque shaft 12 is disposed in it.

Abstract: A centrifugal adjuster for a fuel injection pump governor having a driving part driven at an rpm in synchronism with the engine and having a torsionally elastically coupled flyweight holder guided in a rotational guide. Via a step, beyond a predetermined rotational deflection, the centrifugal adjuster displaces the flyweight holder axially with respect to the driving part, so that a jolt-like stroke effected by means of the step is superimposed on the regulating stroke effected via the flyweights of the centrifugal adjuster whenever the rpm is at a low level, for instance at idling rpm. As a result, a friction that leads to see-sawing of the engine and exhibits pronounced hysteresis is shaken out of the governor.

Abstract: A valve assembly having a valve seat, and a valve tappet that moves relative to the valve seat. A stop member for limiting the stroke of the valve tappet. The valve tappet includes an elongated shaft having a reduced mid-section for the purpose of increasing flexibility. The stop member for the valve tappet is a flexible ring-shaped element which functions like a spring washer. As a result of the shape of the valve tappet and of the stop member, any sudden excessive forces or stresses occurring during the opening and closing of the valve are partially suppressed by the elastic characteristics to avoid damage to the valve assembly. The energy-absorbing features avoid breakage of the shaft and eliminate deformation of the valve piston and the stop member in the area of the stop communicating surfaces, and also reduce damage to the sealing surfaces between the tappet head and the valve seat.

Abstract: A fuel injection pump for internal combustion engines having a plurality of in-line pumping elements, in which there is one pumping element in the injection pump for each individual combustion chamber of the engine. Each pumping element is surrounded by one partial suction chamber, and quantity dividers inserted into inflow and outflow conduits divide the flow of fuel into partial fuel flows so that each partial suction chamber is flushed, whereby no outflowing fuel is capable of mixing with inflowing fuel.

Abstract: An electrical plug and socket connection which is suitable for Diesel engine unit governors containing oil under pressure and which given the hard operation prevailing in motor vehicles is embodied as tight with respect to pressure, lubricating oil and splashing water and as vibration-proof. The electrical plug and socket connection has a first plug part (3), which is directed in a pressure-tight manner out of a housing (1) of the governor and in which plugs (11) are disposed, likewise in a pressure-tight manner. A second plug part (16) having plug sockets (29) for receiving the insertion sections (12) of the plugs (11), which sockets (29) are disposed in a sealed manner with respect to splashing water and soiling, has means (22, 34, 39, 40) for the sealed and strain-relieved reception of a cable (33), the stranded conductors (32) of which are secured on the plug sockets (29).

Abstract: A displacement pickup for detecting positions of an adjusting device, in particular an adjusting device of fuel injection pumps. In an advantageous manner, an adjustment of the displacement pickup can be performed with the aid of a cylindrical tang, which is displaceable and fixable in a through bore in the wall of a housing receiving the adjusting device and through the interior of which an adjusting device of the displacement pickup can be adjusted from outside the housing. In a displacement pickup advantageously embodied as a rotary potentiometer, a contact means of a resistor (R.sub.a) of the resistance course of the potentiometer can thus be adjusted.

Abstract: An electric control device in the form of a final control element for fuel injection pumps for internal combustion engines is protected in the interior of its housing from having the parts it contains inundated by lubricant originating in the interior of the injection pump. This protection is effected in that a suction device driven by the camshaft is disposed in the interior and aspirates lubricant originating in the injection pump and returns it then. The suction device has a rotating part driven by the camshaft, and at its lowest point in the sump it has a sliding shoe which under spring pressure rests at the rear on the rotating part and is so embodied that lubricant adhering to the rotating part reaches a gap and from there is transported back into the injection pump via a drainage hose containing a check valve.

Abstract: A valve plate, inserted between the cylinder body and head parts of a compressor, holds the usual compression valve, which opens to connect the compression and pressure chambers during the compression stroke of the piston, and the suction valve which opens to connect the suction and compression chambers during the piston intake stroke. A separate plate-type idle valve also within the plate is positioned to open into a recess of the compression chamber so that there is no interference with the movement of the piston. The idle valve is controlled by an idle piston actuated by pressurized air admitted through a pressure regulator which opens when the reservoir pressure exceeds a predetermined level. Opening the idle valve shifts the compressor operation from compression to idle condition by permitting unhindered passage of air between suction and compression chambers.

Abstract: A control apparatus for internal combustion engines is proposed, in which the adjustment range or the full-load position of a supply quantity adjustment member of the fuel metering apparatus is varied in accordance with the absolute pressure of the aspirated air in the suction tube of the engine in order to attain optimal combustion at the greatest possible torque. The control apparatus (FIG. 1) includes a pneumatic pressure converter and a pneumatic adjustment member. The pneumatic pressure converter, in a first pressure chamber, contains an evacuated diaphragm pressure box exposed to the aspirated air pressure (p.sub.L), which acts counter to a second diaphragm pressure box exposed in its interior to atmospheric air pressure (p.sub.A) and located in a second pressure chamber connected to a compressed air source. Both pressure boxes are connected via an actuation member supporting a valve member, and the valve member reduces the servo air pressure (p.sub.S) to a control air pressure (p.sub.

Abstract: 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.

Abstract: A fuel quantity regulator for self-igniting internal combustion engines having a fuel quantity regulator rod, an actuator for the regulator rod and an rpm governor. Between the actuator and the regulator rod there is interposed a rocker arm and an intermediate lever. The rocker arm is connected with the actuator, and the intermediate lever is connected to the regulator rod. During correct operation, the rocker arm engages a recess in the intermediate lever and as a result the actuator movement is transmitted to the regulator rod. When an error signal is generated, however, the rocker arm disengages the recess in the intermediate lever, and as a result the regulator rod is disconnected from the actuator so that only the rpm governor is operational relative to the regulator rod.

Abstract: A valve mount for a compressor pressure valve with a valve seat disposed in a bore formed in a cylinder head, wherein the valve mount is provided with a cooling chamber surrounding the external surfaces of a pressure chamber for transferring and dissipating heat from the valve parts including the valve seat.

Abstract: A control apparatus is proposed for supercharged fuel injection engines, particularly for diesel engines having a V-type configuration that include two induction tubes, which apparatus enables the adjustment of the controller output range or the limitation of the full-load position of the delivery-amount adjusting member in the fuel measurement apparatus, depending upon which induction tube has the lower prevalent charge-air pressure. The control apparatus comprises a switch valve arranged in the control line to a pressure chamber of a correcting element which acts on the delivery-amount adjusting member; said correcting element has a valve member, controlled by the charge-air pressure, connecting the pressure chamber with an intake pressure line leading to the area of lower prevalent charge-air pressure.

Abstract: A fuel injection system for internal combustion engines includes a fuel metering and distributing assembly. The pressure gradient across this assembly is controlled by an electromagnetic fluid pressure modulator which acts on one side of equal pressure diaphragm valves. The pressure gradient is monitored by a pressure-to-voltage transducer whose signal is fed to the modulator as a control signal. One or more of the diaphragm valves may be biased in the closing direction and the controlled pressure line may also include a pressure transformer.