Abstract: A device for measuring the mass or flow rate of a flowing medium of the air aspirated by an internal combustion engine including an electronic control circuit, which evaluates the electrical signals of a temperature-dependent sensor element and which is accommodated together with the sensor element in a metal protective housing, for the sake of protecting the sensor element against entering electromagnetic waves (EMC protection). To reduce the expense and structure space, the device has a protective housing, which is composed in plug-together fashion of a metal bottom housing, a metal closure housing, and a metal plug part. The plug part has a plurality of leadthrough capacitors for noise suppression of the electrical connection line passed through the plug part and connected to the electronic control circuit.

Abstract: A fuel injection pump for internal combustion engines in which to control the fuel injection quantities with the internal combustion engine cold, a first control edge is provided. For controlling the start of fuel injection with the internal combustion engine hot, a second control edge and a third control edge are provided. Assigned to respective control edges are provided a first and second oblique control edge, by means of which an effective pump piston feed stroke is controlled according to the rotary position of the pump piston. To switch off the internal combustion engine, in the region of transition from the first control edge to the second control edge the assignment of this second control edge to the second oblique control edge is provided in such a way that injection ceases on account of an overlap with a control port.

Abstract: A solenoid valve which guarantees the reliable opening of the valve, even when there are great pressure differences. The solenoid valve has an armature which receives a tappet, that can be longitudinally moved in the solenoid valve. A restoring spring, which transports the armature with the tappet into a closed position of the solenoid valve, engages one side of a collar of the tappet and a compression spring, which acts in the opposite direction from this restoring spring and is supported on the armature. The compression spring has a greater initial stress than the restoring spring. Pressure drops can produce a hydraulic closing force on the tappet, which force is directed counter to the magnetic force action.

Abstract: A slip-controlled brake system for commercial vehicles with a hydraulic transmission device for which the cost of the system is reduced. Each axle of the vehicle is assigned a hydraulic control unit, with an electronic control unit, of a slip-control device for passenger vehicles. The hydraulic control unit has four hydraulic channels (K1, K2, K3, K4). Brake lines which connect a master cylinder of the brake system to wheel cylinders are routed in each case via two channels (K1, K2, K3, K4) of the hydraulic control unit, which are connected in parallel, in order to achieve a sufficiently large volume flow of pressure medium. Connected to the corresponding control unit are two wheel speed sensors assigned to the wheels of the respective vehicle axle. The control units are connected electrically for the exchange of wheel speed sensor signals. The brake system can be implemented in an advantageous manner on light commercial vehicles.

Abstract: A system and method for pre-warning a driver of a vehicle when the vehicle is approaching a traffic light or warning sign. Transmitters of highly directional energy are installed at the traffic lights and/or signs while receivers for this radiant energy are installed on each vehicle. False warnings are avoided by transmitting at least two simultaneous coded signals from the traffic light/sign. A first signal, called a direction signal, indicates the presence of a light/sign while a second signal, called a status signal, indicates the status of the traffic light/sign, e.g. red, yellow, green, "Railroad Crossing", etc. The two signals may be transmitted using two different kinds of radiant energy, e.g. infrared and laser beams.

Abstract: A fuel injection nozzle for preinjection and main injection has a nozzle holder in which two closing springs are arranged coaxially, one spring acts continuously on the valve needle via a central pressure bolt and the other spring acts on the valve needle, via a pressure ring surrounding the pressure bolt, once the valve needle has passed through a pretravel (h.sub.v). Between the valve needle and the pressure bolt and the pressure ring, an intermediate pressure element which is constructed as a disk is arranged, the outer edge area of the intermediate pressure element does not come into contact with the pressure ring until after the valve needle has passed through the pretravel (h.sub.v), which pressure is supported in the closed position of the valve needle by a shoulder of an intermediate disk.

Abstract: A control for a throttling member, for example a throttle butterfly of an internal combustion engine. The actuating device has an actuating member which is designed as a plastic part and is molded onto one end of an adjusting shaft by means of an inner fixing sleeve and a recess made in the adjusting shaft in the form of a slot which is filled with plastic, thus allowing reliable torque transmission. The actuating device is suitable for throttling devices of mixture-compressing, spark-ignition or air-compressing, self-ignition internal combustion engines.

Abstract: A device for measuring the mass or flow rate of a flowing medium. The device has a temperature resistor for measuring the flow medium mounted externally on the housing of the device, so that by means of the temperature-resistor a spatial distance from the sensor element can assume the temperature of a flowing medium without thermal influence, and as a result the device has an increased measurement accuracy and a shortened response time. The device is provided for measuring the mass or flow rate of a flowing medium of air aspirated by internal combustion engines.

Abstract: An electromagnetically actuated valve which achieves the setting of a reduced cross section of flow following a closed position of the valve. The solenoid valve has a seat valve which is surrounded by a sleeve which is secured pressure-tightly on a valve body. In the closed position of the seat valve, a tappet engages in the sleeve, forming a small radial gap. From the interior of the sleeve, a first pressure-medium passage leads to an end face of a magnet armature, said end face being remote from the seat valve. Outside the sleeve, a second pressure-medium passage leads to that end face of the magnet armature which is close to the seat valve. In the case of a pressure drop between the pressure-medium inlet and the pressure-medium outlet of the solenoid valve, the seat valve can assume a partially open position following a closed position of said valve since, due to the gap, which acts as a restriction, a pressure disequilibrium arises at the magnet armature and valve opening forces are compensated.

Abstract: A piston pump which is contemplated for furnishing fuel at high pressure, especially gasoline with low self-lubricating properties. To avoid drive-side wear, a rotatably drive eccentric element is provided as the actuating device for the pump piston of the piston pump, the driving motion of the eccentric element being transmitted to the pump piston via a flexible transmission element.

Abstract: A method of manufacturing an improved screw washer, an improved screw washer, and an improved mold for fabricating the improved screw washer. Using a selected metal plate having a thickness thinner than a nominal height demanded for a nut, the invention primarily aims to form an improved screw washer incorporating a nut satisfying the demanded height. The invention is to provide an improved method of manufacturing an improved screw washer, the improved screw washer, and an improved mold for fabricating the screw washer. Particularly, using this improved mold, the improved screw washer can easily be manufactured, where the above-identified nut is solidly bonded with the metal plate without being disengaged therefrom, and yet, a sufficiently lengthy tapped hole is formed. Structurally, a nut is formed in the state being continuous to a metal plate after punching out part of the metal plate.

Abstract: The swimming pool cover system is used for removably covering any type of swimming pool and for preventing objects or persons from falling into the pool. It comprises a flexible cover sheet having an outer edge removably connectable to locations along the swimming pool periphery. For covering the pool, the outer edge of the sheet is connected to the pool periphery and a central portion of the sheet is connected to a tautening cable mounted on a boom member extending over the pool. The sheet is then suspended and tautened above the water surface. The cover system comprises a sheet bundle cable mounted on the boom member for bundling up the sheet above the water surface when the cover system is in an uncovering position. The swimming pool cover system is very advantageous over other swimming pool covers because it is very simple and rapidly installed or removed. It may be very easily bundled up and stored away when not in use.

Abstract: The invention relates to a piston pump having a pump motor which has a motor shaft which merges into an eccentric for driving at least one pump piston. In order to support the eccentric in a robust manner, the motor shaft has ball bearings on either side of the eccentric, which ball bearings, in order to avoid alignment errors, are inserted into a common eccentric-bearing component. In order to be able to carry out a test run of the pump motor independently of a pump casing, the invention proposes to connect the eccentric-bearing component to a casing of the pump motor.

Abstract: In known inlet valves, condensation of the fuel, which is precipitated in the form of a wall film, occurs at the inlet valve, in particular when the internal combustion engine is in the cold state. Relatively large fuel droplets, which cause an increase in the harmful components in the exhaust gas, can break away from the wall film. The inlet valve according to the invention has a hollow shaft into which compressed air flows via at least one inlet shaft opening, the compressed air then flowing out again from at least one outlet opening which is provided on one side of the inlet valve facing away from the combustion space of the internal combustion engine. As a result of the outflowing compressed air, an air film is produced around the valve head, which air film prevents condensation of the fuel. The inlet valve is provided in particular for mixture-compressing, spark ignition internal combustion engines.

Abstract: A fuel injection valve for internal combustion engines, with a high pressure connection, which feeds laterally into a valve retaining body inserted into the engine housing, which connection is constituted by a pressure pipe connector which is inserted into a through bore in the housing. The pressure pipe connector is connected to a pressure line by means of a male pipe fitting and is axially braced by this fitting against a seat on the circumference face of the valve retaining body. In order to limit the clamping forces of the high pressure connection introduced radially onto the valve retaining body, a region is provided between the force introduction onto the pressure pipe connector and its contact with the valve retaining body, which region plastically deforms from a particular clamping force onward.

Abstract: The invention relates to a valve body which is provided for a solenoid valve. The valve body is held between two perforated disks whose holes each have a collar. The two perforated disks are connected to form a valve body holder. In order to connect the two perforated disks, each have tongues which project through holes of the respective other perforated disk and are bent over in such a way that they hold the two perforated disks against one another. The tongues protrude obliquely from the valve body holder with their free ends. They serve as springs which are supported against an end wall face of a valve chamber and press against a valve seat lying opposite the end wall face. The invention constitutes a cost-effective design of a valve body which is integral with a valve spring.

Abstract: The invention sets forth a hydraulic housing block with a downward-opening cavity which is covered by a protective cap. For ventilation of the cavity, the protective cap is arranged with a clearance relative to the hydraulic housing block. The protective cap is arranged in such a way that spray and dirt can not penetrate into the cavity through a gap between the protective cap and the hydraulic housing block. In order to prevent this penetration, the cap seals off the cavity by at least one encircling sealing lip and provides an opening at the lowest point on the circumference of the sealing lip to allow ventilation of the cavity.

Abstract: The electrohydraulic adjusting device for actuating a device for adjusting at least one camshaft of an internal combustion engine relative to its crankshaft has two differential pistons each of which serves to adjust a camshaft (intake camshaft or exhaust camshaft). Each of the two differential pistons have a small effective piston surface which is acted upon with pressure by a pump. An independent pressure control valve is associated with each of the pressure chambers on a larger effective piston surface, via which valve, the pressure in this pressure chamber can be controlled independently of the other differential piston.

Abstract: A throttle device having a throttle-flap connection piece which is produced from plastic. For an efficient production of the throttle-flap connection piece form plastic in the plastic injection-molding technique, it is necessary to avoid undesirable shrinkage in the pivoting region of the throttle flap and to seal off the bearing arrangements against penetrating plastic during the injection operation. The throttle device includes an annular insertion part which is arranged in the pivoting region of the throttle flap and which, connected to the bearing arrangements is embedded into the throttle-flap connection piece made form plastic, in order to protect the bearing arrangement against penetrating plastic. The injected-round insertion part is suitable for throttle devices which are made from plastic and which are provided for mixture-compressing spark-ignition or air-compressing auto-ignition internal-combustion engines.

Abstract: A fuel injection apparatus of the invention for a two-stroke engine including a fuel injection with an adjusting device, which via a pulsating pressure line is supplied with the pulsating internal pressure and inner chamber of a crankcase of the two-stroke engine, so as to meter the supply quantity of the fuel injection pump as a function of the internal pressure in such a way that exhaust emissions and fuel consumption of the two-stroke engine are reduced by means of a supply quantity optimally adapted to the combustion. The fuel injection apparatus according to the invention is intended for use in two-stroke engines.