Abstract: A hydraulic main brake cylinder is proposed, in the housing of which at least one part of the switching members of an anti-locking apparatus is integrated. The switching members are either plunger pistons or restoring pistons or a combination of the two, which are triggered by multiple-position valves. In this manner, not only is the structural expense very low, but additional advantages are also attained in terms of safety. The hydraulic main brake cylinder is particularly well suited to application in the brake system of passenger vehicles and lightweight trucks.

Abstract: The fuel-air mixture of an engine in a motor vehicle is controlled on the basis of a signal related to the fluctuations in the cyclic variations of the average combustion chamber pressure. This signal is derived indirectly from a sensor which monitors the rotational speed of engine members, e.g. the crankshaft. In order to provide closed-loop control, there is provided a reference value which is adapted continuously to changing engine speed. In addition, a correction of the reference signal is made to account for varying degrees of damping induced by changing inertial masses coupled to the engine, in particular the elements of the transmission connected between the engine and the vehicle. The correction for damping is made on the basis of signals related to the prevailing gear ratio either by direct indication of the gearshift lever position or by measuring the rotational speeds of the input and output shafts of the transmission.

Abstract: The invention proposes a fuel injection nozzle wherein the mounting, for example in the form of a cap nut or sleeve nut, used for clamping the fuel pressure line to the nozzle holder, is replaced by a cap screw, the outer thread of which engages a corresponding threaded area in the engine bore which is arranged to receive the nozzle. This has the result that, together with the mounting of the fuel line, the injection nozzle is simultaneously firmly clamped to the engine.

Abstract: A hydraulic brake force amplifier for multiple-circuit brake systems provided with a control valve which is actuated by the brake pedal via a travel-limiting spring. Disposed parallel to the control valve is a main cylinder, which is actuatable by the brake pedal either in accordance with pressure or when there is a failure of the pressure supply. In order that the travel path of the pedal will not be unnecessarily long when the pressure supply is intact, an arresting piston member is used, which limits the stroke of the control valve. The arresting piston member is combined with means which, upon failure of the pressure supply, permit its use as a further main cylinder piston. In this manner, a compact and lightweight structure of the brake force amplifier is possible. The brake force amplifier is preferably used in passenger vehicles.

Abstract: A fuel injection pump for internal combustion engines is proposed wherein the pressure of a supply pump is controlled in accordance with rpm. A valve which controls the pressure additionally in accordance with load is actuated via a member, actuated in accordance with load, of the rpm governor of the pump. The preferred embodiment relates to distributor-type injection pumps having an electric final control element, the rotary shaft of which acts as the movable member of a slide valve.

Abstract: A method and an apparatus for regulating the fuel-air ratio of the operational mixture of an internal combustion engine and for monitoring the operational readiness of a .lambda. sensor controlling the regulating apparatus and functioning according to the principle of ionic conduction in fixed electrolytes. A constant reference voltage which approximately corresponds to the average sensor output voltage is connected opposite to the .lambda. sensor. The level of the resultant voltage thus established, the values of which are disposed symmetrically relative to the reference voltage, is utilized, along with the cooperation of a resultant electric current which causes a voltage drop across the temperature-dependent internal resistance of the .lambda. sensor as a gauge for the operational readiness of the .lambda. sensor.

Abstract: An apparatus for damping bounce-induced oscillations in an internal combustion engine having a fuel metering control for supplying fuel to the engine in accordance with various operational signals, which includes an engine speed sensor for generating an rpm signal proportional to the engine rpm, a signal differentiation circuit for producing an rpm differential signal from the rpm signal, and a phase-shifting circuit, connected to receive the rpm differential signal, for supplying to the fuel metering control a bounce damping signal which is proportional to the rpm differential signal and which is phase-displaced with respect to the rpm differential signal so that the fuel metering control supplies fuel to the engine to countercontrol the bounce-induced oscillations of the engine.

Abstract: A fuel injection nozzle is proposed having a valve needle which opens in the direction of fuel flow and a throttle point controlled in accordance with the stroke of the valve needle which is loaded by at least two closing springs, in order to obtain a distinct pressure jump with respect to the required opening pressure when the throttle point is rendered ineffective. As a result, the throttle point is fully effective during idling and at relatively low partial loads and is only rendered ineffective when the supply of fuel is relatively great.

Abstract: A device is proposed for controlling the current through switching devices which function inductively, in particular magnetic valves in the fuel metering system of an internal combustion engine, with which it is possible to control the current during an attracting and maintenance phase. A primary characteristic is a bracketed and controllable constant-voltage source parallel to the base-emitter path of a switching transistor and of a measuring resistor. Furthermore, a threshold switch connected with its positive input to the measuring resistor is coupled with positive feedback, and the negative input of this threshold switch is connected to a voltage divider controllable in accordance with the input signal.

Abstract: A device for air flow rate measurement in the air intake tube of an internal combustion engine which has at least two temperature-dependent resistors in different branches of a bridge circuit having closed-loop electric current control, and which is characterized in that the temperature-dependent resistors are embodied as hot wires, that a temperature above the aspirated air temperature is selected for both hot wires, and that the difference of the hot wire temperatures is held to a constant value. The purpose of the device is to provide air flow rate measurement which is as error-free as possible, even when the aspirated air temperature is fluctuating rapidly. An identically embodied suspension and fastening of the individual hot wires is given as an example for the spatial disposition of the individual hot wires in the air intake tube.

Abstract: A method and an apparatus for producing a tube from a strip of synthetic resin and/or unvulcanized rubber incorporating a vulcanizing agent by winding the strip on a former supported by a frame in the manner of a cantilever to shape the strip into a tubular body and heating the tubular body on the former by a heater while sending out the tubular body toward the free end of the former.

Abstract: An apparatus for measuring the flow of air through the air intake manifold of an internal combustion engine. A controller regulates current to a bridge circuit having a first temperature-dependent resistor which is disposed in the air flow within the manifold, and whose resistance is a function of the current flow therethrough and the flow rate and temperature of the air. A second fast-responding temperature-dependent resistor, which is disposed in the manifold and supplied with a very small current so that its resistance is essentially a function of the air temperature, provides an air temperature signal which is amplified and/or differentiated and supplied to the controller as a precise correction signal for the bridge diagonal voltage signal which is also an input signal to the controller, so that the current output of the controller is an accurate measure of the air flow.

Abstract: The invention relates to a control apparatus for the variation of the onset of supply by a fuel injection pump having an adjustment piston engaging the piston cam drive, the adjustment piston under rpm-dependent pressure being adjustable counter to a restoring force by a fluid located in a work chamber of the adjustment piston, and an assembly for prolonging the supply time and at least during pump supply on the basis of the restoring and reactionary force including displacing the adjustment piston counter to the fluid pressure.

Abstract: An apparatus is proposed for burnoff of deposits from at least hot wire and/or hot film resistors in the air flow rate measurement circuit of an internal combustion engine, wherein during the burnoff procedure a separate electric current circuit is furnished to provide for the resistors to be burned off with high electric currents. In one embodiment, the resistors to be burned off are placed in a separate current path between two operational voltage leads, while in another embodiment, that there is provided a parallel circuit arrangement of individual resistors to be burned off, whereupon the total electric current flow through the individual resistors is then seprately controlled in closed-loop fashion.

Abstract: A system of changing the travelling speed of a working vehicle in which a stepless speed-change means is operated by a pedal. Said system has a cam mechanism by which the pedal may be fixed at the desired position, and a first manual lever for operating this cam mechanism.

Abstract: A dispensing apparatus for aseptic measurement and filling of a fluid product is proposed, which, particularly as a result of the simple embodiment of a control slide valve, is especially suitable for the development of a multiple dispensing apparatus. A groove-like recess provided in the control slide serves both to connect the fluid reservoir chamber with the dispensing chamber and to connect the dispensing chamber with the particular container to be filled.

Abstract: A fuel injection system is proposed which brings about an improvement in the acceleration behavior of an internal combustion engine. The fuel injection system includes metering valves actuatable by means of an air flow measuring device, at which valves a pressure difference can be held constant via control valves and the pressure difference is variable in accordance with operational characteristics of the engine. To this end, the control valves are located on a control pressure line in which a control throttle and an electromagnetic valve are disposed. At the same time, pressure limitation elements communicate with the control pressure line and, in the event of acceleration of the engine, reduce the extent of increase of control pressure and thus assure fuel metering corresponding with the operational state of the engine.

Abstract: A fuel injection nozzle for internal combustion engines, in which the valve needle together with the valve seat of the nozzle body forms an electric switch which by its opening and closing indicates the injection onset and the injection duration. A spring-elastic conductive element is disposed inside the closing spring and connects the attachment piece with the valve needle.

Abstract: A fuel metering apparatus in an internal combustion engine is proposed, in which the metering signal is correctable in accordance with the mixture composition and/or the exhaust gas composition, this composition is detected by means of a sensor for at least one component of the mixture and/or exhaust gas, and the sensor signal proceeds to a single threshold switch for evaluation. The output level of the threshold switch is monitored in its course and the correction signal as well as an error recognition signal are derived from it.

Abstract: A fuel injection nozzle having a needle valve in which the injection ports are formed within the valve needle instead of within the nozzle body and a control opening located in the nozzle body for controlling the injection ports; the control opening being large enough to avoid clogging and capable of controlling one or more injection ports during the needle valve stroke.