Abstract: An apparatus is proposed for controlling the exhaust recirculation rate in an internal combustion engine, in particular an engine with auto-ignition, which includes preferably one mixture valve in the area of the discharge opening of the exhaust recirculation line and which is characterized in that the control is accomplished via the mixture valve position ahead of the inlet valves in accordance with the concentration of at least one component of the air-exhaust gas mixture and/or at least one component of the exhaust gas. Thus it is possible to operate the engine with a relatively emission-free exhaust. An exhaust gas reservoir is further provided, with which peaks in the exhaust gas concentration due to a dynamic driving mode can be intercepted. Finally, it is also proposed that the exhaust recirculation be realized solely via a pressure, which can be controlled in open-loop or closed-loop fashion, in the exhaust line by means of a valve.

Abstract: A control device with an electric servo motor is proposed, by means of which a throttle device can be operated, which opens, to a greater or lesser degree, the passage diameter of a flow line, especially the passage diameter of a by-pass line around a throttle valve disposed in the intake line of an internal combustion engine. The control device has an elastic element which moves the throttle device, during an interruption of the current supply to the electric servo motor into a defined position opening the passage diameter of the flow line.

Abstract: An rpm-governing system for an internal combustion engine with auto-ignition is proposed, in which the fuel quantity to be injected at least in the event of idling is subject to the influence of an electromagnetic final control element, in which the control unit for forming the final control element trigger signal includes a regulator having PID behavior and in which the regulation signal is formed in accordance with the actual rpm/set-point rpm deviation. This rpm-governing system has an increase in rpm set-point value, with a retarded drop, this increase in set-point being made to follow up the increase in actual value. The PID regulator furthermore has a non-linear and preferably rpm-dependent P component. The signal end stage includes a pulse length modulator, the output signal of which triggers an electromagnetic final control element while there is a simultaneous current regulating action.

Abstract: A system for independently determining the capacitance and resistance of a capacitive sensor, in which the sensor and a reference capacitor are sequentially energized from two alternating voltage sources of different frequencies, and average sensor and reference capacitor current valves at the two frequencies are measured and supplied to a computer which periodically calculates the sensor capacitance and resistance.

Abstract: An apparatus is proposed which serves to regulate the idling rpm of an internal combustion engine. To this end, a bypass valve is provided, which is disposed in a bypass around a throttle valve in the intake tube of the engine. A movable wall of the bypass valve separates a control chamber from a bypass chamber. The intake tube pressure downstream of the throttle valve in the bypass chamber prevails. The control chamber communicates via a control throttle restriction with atmospheric pressure and also, via an electromagnetically actuatable control valve which operates in accordance with operating characteristics of the engine, as well as with the intake tube pressure downstream of the throttle valve. The regulation of the idling rpm is thus effected by means of a proportional component effected by the bypass valve and an integral component effected by the pressure distribution between the control throttle restriction and the control valve.

Abstract: A hydraulically operated bar stock feeder having a hydraulic circuit in which a hydraulic pump drives a hydraulic motor which in turn operates the bar feeder carriage. The hydraulic pump operates a hydraulic cylinder with a designed live center cup attached to the end of the cylinder rod. The hydraulic circuit has a control valve with hydraulic detent which will lock in a forward or backward position. While the control valve is locked in forward position, fluid is allowed to go to a relief valve at the hydraulic motor on the carriage. The relief valve reduces the pressure going to hydraulic motor and deceleration valve. When the carriage reaches the end of track the deceleration valve is depressed, which, through another relief valve at a lower pressure starts the cylinder rod moving outward. Both the cylinder and carriage motor are able to set (not move) under pressure and will start automatically when the lathe chuck is open.

Abstract: An injection initiation adjuster for fuel injection pumps is proposed which includes a hydraulically actuated adjustment piston, whereby the actuation fluid is controllable via a control plunger disposed coaxially with the adjustment piston and this control plunger is electromagnetically adjustable.

Abstract: A tire-pressure regulating system is proposed with which the air pressure in the vehicle tires can be varied while driving. The tires are connected to supply lines in which rotor connections, control valves, flow restrictive elements and an adjustable regulating valve are disposed. A relay valve and an axle valve are incorporated following the regulating valve.By means of guiding the supply line in and at the axle valve in a particular manner, an acceleration of the pressure equalization process is attained.The tire-pressure regulating device is preferably usable in trucks and trailer trucks.

Abstract: A device is proposed for measuring the flowthrough rate in an internal combustion engine, particularly for measuring the air throughput in the intake tube. The device has a measurement bridge functioning on the principle of constant-temperature control, and also a regulating deivce for the total bridge current during the burn-off phase of the hot wire or hot film as one of the bridge resistors. The essential feature is that the bridge circuit assembly comprises at least three voltage dividers; for the purpose of regulating the electric current in the burn-off phase and during measurement operation, respective control voltages are picked up between two different voltage dividers.

Abstract: A method and apparatus are proposed for the combined guidance, incorporating a register, of two continuously advanced foil strips, such as when attaching a foil cover strip to a lower foil strip including container-like recesses. The foil cover strip is preferably of aluminum and has printed legends which must be oriented precisely with respect to the container-like recesses of the lower foil strip. A marking is associated with each legend for scanning by a photo cell. The distribution of the legends and thus of the markings is somewhat closer together than the distribution of the container-like recesses. By stretching the foil cover strip, the distribution of the legends and of the markings can be adapted to the distribution of the container-like recesses.

Abstract: A fuel injection valve is proposed for fuel injection systems of internal combustion engines, which serves to supply fuel into the intake tubes of the engine. The injection valve includes a movable valve element which cooperates with a fixed valve seat. Downstream of the valve seat a bore is provided in the valve body. A charge controlling device in the form of an insert having a section having axially extending flutes thereon is pressed into the bore. The insert has a section on its end away from the fixed valve seat that functions as a metering section. The metering section has a diameter smaller than the internal diameter of the bore, with the metering of fuel taking place in the space thus provided. A diversion means downstream of the charge controlling device serves to divert fuel flow from a valve in a radially extending fan-type spray into an intake tube.

Abstract: An applicator head is disclosed which accumulates, feeds, cuts and presents a preselected length of ribbon-like material. A first pneumatic cylinder is connected to a pivoting arm which controls accumulation and feeding steps, while a second pneumatic cylinder operates an applicator arm, to cut and present the material. The connection of the pivoting arm, relative to the first cylinder, determines the length of the cut material or ribbon segment.

Abstract: A temperature sensor is proposed which is intended in particular for measuring the temperature of the air aspirated by an internal combustion engine which operates by electronic fuel injection. The temperature sensor includes a carrier body receiving electrical connections and a temperature-dependent electrical resistor element which is surrounded by a protective sheath. The protective sheath has apertures which permit free access to the temperature-dependent electrical resistor element by the medium to be measured. The protective sheath is advantageously capable of being connected in a positively-engaged manner with a protruding catch of the carrier body. As a consequence of the free access of the medium to be measured to the temperature-dependent electrical resistor element, a very short response time on the part of the temperature sensor to changes in temperature is assured.

Abstract: There is proposed a fuel injection pump wherein the full load feed quantity is defined by a speed-dependent correction of the maximum full load quantity. The pump comprises a control device which acts on a stop lever via a stop piston. The stop lever receives the full load stop and determines the position of a flow quantity adjustment member. The stop piston is connected with a control diaphragm which separates a control chamber from a spring chamber and comprises a bore which is connected to the suction chamber of the pump and in which a control piston is provided so as to be slidable in opposition to the force of a control spring. The control chamber is connected to the suction chamber via a throttle orifice.

Abstract: A fuel supply system for mixture-compressing internal combustion engine with externally-supplied ignition is proposed, which serves to form the most optimal possible fuel-air mixture. The fuel supply system includes a primary mixture formation unit disposed in the intake manifold and at least one ultrasonic atomizer nozzle in the intake manifold, for the purpose of correcting the fuel-air mixture by means of supplementary fuel, downstream of the primary mixture unit or in each individual intake tube. The ultrasonic atomizer nozzles are triggered, with the interposition of an electronic control device, in accordance with operating characteristics of the engine, as well as the exhaust composition, and they permit the supply of finely prepared supplementary fuel for the purpose of regulating the fuel-air mixture to a predetermined .lambda. value; of compensating for non-uniform distribution, and of enrichment of the mixture in the case of warm-up, full load and acceleration, as well as of idling regulation.

Abstract: A one step method of applying a sealant onto the inside surface of a pipe, such as a gas pipe, to repair any defective portions that are likely to cause a leak and should be repaired. The sealant is applied and it is then dried and solidified to seal the leak portions of the pipe. Preferably, an injection means is used for supplying the sealant in a cylindrical shape so that every portion of the inner surface of the pipe will be coated.

Abstract: A scissor tail dump trailer in which the tongue is so positioned that the load is carried by the trailer and not the towing vehicle. Also the trailer frame is so constructed that the pivot end of the trailer is supported such that the pivot end of the trailer bed is not lowered below the platform carrying the trailer bed.

Abstract: A method for closed-loop control of the instant of ignition is proposed, in which the position of the peak combustion chamber pressure after top dead center is ascertained with the aid of an ionic current and made to assume a set-point value for this position. In this manner, a very simple probe having inexpensive circuitry can be used for optimizing the instant of ignition.

Abstract: A mixture formation system is proposed for mixture-compressing internal combustion engines with externally supplied ignition. The mixture formation system includes an air intake fitting in which an electromagnetically actuatable injection valve is held concentrically, upstream of a throttle valve. Disposed upstream of the injection valve is an air flow rate meter provided with a temperature-dependent resistor. The electronic regulating device of the air flow rate meter and a pressure regulator for regulating the fuel pressure at the injection valve as well as a supplementary air valve for controlling an air bypass bypassing the throttle valve during the warm-up phase of the engine may be provided on the air intake fitting. As a result, a mixture formation system is attained which is simply constructed and functions reliably, and which because of its compact structure can be accommodated in the engine compartment of an internal combustion engine even where space is extremely limited.