Abstract: A device for damping the intake noise in internal combustion engines employs the air intake path (1,5,6) of the diesel engine within which path there is arranged a convergent-divergent nozzle (4) wherein cross section of passage is adjustable by means of a throttle member (3) which can be displaced as a function of a loading of the engine.

Abstract: Feed unit, in particular for the feeding of fuel, having an electric drive motor and a pump unit coupled to it, which comprises a base plate, an intermediate plate having a recess for rotating pump parts and a cover, at least the base plate and the cover consisting of a ceramic material and the end sides of the base plate and of the cover which face the intermediate plate having ground surfaces.

Abstract: In a device for controlling a windshield wiper, in particular on a motor vehicle, the windshield wiper is switched on when a sensor indicates wetness above a preset threshold value. The windshield wiper can furthermore be turned on by a manually actuatable switch. The threshold value is reduced upon actuation of the switch.

Abstract: In a method and a circuit for the monitoring of electromotive setting elements which are connected to a bridge output stage, the actual values of the currents in the branches of the bridge are compared with the desired values which apply to the corresponding state of switching. Depending on the result of the comparison and the state of switching of the bridge output stage, an error possibly present is read from a table. It should be emphasized, in particular, in this connection that with only one bridge circuit, two motors which are connected in parallel can be completely monitored.

Abstract: A retention device 35 couples a load adjustment device to a throttle valve 2 which determines the output power of an internal combustion engine and is arranged fixed for rotation on a throttle-valve shaft 11. A clutch disk 8 of the clutch is connected fixed for rotation with the throttle-valve shaft 11 and also with the clutch 13, and is secured by means of a clamping device 35. The advantageous development of the clamping device 35 in combination with a coupling pin 10 makes it possible to mount and to lock the clutch anchor plate or clutch disk 8 against rotation without radial play, with the throttle valve shaft 11 entirely mounted. In addition, the clutch disk 8 can be axially secured in simple manner.

Abstract: A load adjustment device has a throttle valve 9 which determines the output power of an internal combustion engine and is connected, fixed for rotation, with a throttle-valve shaft mounted in a throttle-valve housing. A control element 8a cooperates with a driver 4 coupled to an accelerator pedal 1, and acts on the throttle-valve shaft. A setting path of the driver 4 is limited by a stop (LL.sub.max). Upon a resting of the driver 4 against the idle stop (LL.sub.max), the control element 8a is moveable by means of the electric motor 14 in the idle control range relative to the driver 4. The control element 8a can be brought via a coupling member against a moveable stop 75 so that the setting lever 71, together with the throttle valve 9, is displaceable only via the electric motor 14 into a minimum idle position.

Abstract: A feed unit, in particular for the feed of fuel, has an electric drive motor with a pump unit coupled with it, the pump unit being built of two housing parts and a pump wheel arranged between them. The two housing parts and the pump wheel are each developed as a casting or compression molding from a mixture of graphite and plastic. The end surfaces of the pump wheel and of the two housing parts which contact each other are roughened.

Abstract: A load-adjustment device having a control element which can act on a throttle valve (e.g.) of an internal combustion engine and which is connected to a driver which is coupled to an accelerator pedal and, in addition, can be moved by means of an electric setting drive, having a desired-value-detection element associated with the driver and an actual-value detection element which cooperates with the desired-value detection element and acts on the electric setting drive, the electric setting drive being controllable as a function of the detected values of an electronic control device. The driver, the control element, the desired-value detection element, the actual-value detection element and the setting drive are arranged in the throttle-valve housing, the driver and the control element being coupled by means of a coupling spring and the control element being urged in the direction towards a stop of the driver.

Abstract: A method and a system for controlling a windshield wiper, particularly on a motor vehicle, provides that the windshield wiper is automatically activated as a function of the intensity of rain. A frequency-limited variation of the signal of a sensor serves as a measure of the intensity of the rain.

Abstract: A method for controlling a windshield wiper, particularly on a motor vehicle, in which a rain sensor is located on the windshield to be wiped in the region of the windshield wiper and gives off a sensor signal as a function of the amount of wetness. The rate of change of the sensor signal after the windshield wiper has passed the sensor is determined and used in order to control the frequency of wiping.

Abstract: A load adjustment device having a control element (11) which can act on a setting member (12), determines the output of an internal combustion engine, and cooperates with a driver (3) which is coupled to an accelerator pedal (1). In addition, the driver can be moved by an electric setting drive (15), having a desired-value detection element (7) associated with the driver and an actual-value detection element (13) which cooperates with said desired-value detection element and acts on the electric setting drive. The electric setting drive is adapted for control by an electronic control device (14) as a function of the values detected. In order to assure a movement of the control element which is free of reaction on the driver upon control of the electric setting drive, a switch clutch (10) is provided in accordance with the invention between driver and control element.

Abstract: A setting element (9) has, as handle (18), a web which is connected via a place of intended breakage (19) to the rest of the setting element (9). As setting part (17) there is provided an eccentric which effects the required setting movement by the turning of the setting element (9). After a desired setting has been reached, the handle (18) is broken off, thereby preventing further manipulation of the setting element (9).

Abstract: A setting lever (8) adapted to be turned mechanically is seated in turnable manner on a throttle-valve shaft (2) of a throttle-valve connection (1). A driver arm (12) of the setting lever engages between two legs (10, 11) of a coupling spring (9). Another driver arm (13) which is firmly attached to the throttle-valve shaft (2) also engages between said legs (10, 11). In this way an electric motor (4) which is developed as stepping motor can turn the throttle-valve shaft (2), for instance, on a basis of commands of an anti-slip control or of a speed control, regardless of the position of the setting lever (8).

Abstract: A load adjustment device has a throttle valve (9) which determines the output of an internal combustion engine and is connected, fixed for rotation, with a throttle-valve shaft (36) arranged in a throttle-valve housing. A control element cooperates with a driver 4 coupled to an accelerator pedal (1), and acts on the throttle-valve shaft (36). In addition to the one driver (45), two further drivers (49, 51) forming a free-travel hook (47) are provided, having at least two stops between which a driver (52) of the throttle-valve shaft (36) is adjustably received. By the use of the first driver (45) between the electric motor (14) and the throttle-valve shaft (36), the coupling provided on the driven shaft (39) of the electric motor (14) can be dispensed with in simple manner.

Abstract: A load adjustment device has a control element (8) for action on at least two setting members (9a, 9b) which determine the output power of an internal combustion engine. The control element is spring-coupled with a driver (3) which can be actuated via an accelerator pedal (1) and, in addition, can be moved by means of an electric setting drive (10). A desired-value detection element (5) is associated with the driver and an actual-value detection element (22) which acts on the electric setting drive and cooperates with the desired-value detection element is provided. The electric setting drive is adapted to be controlled as a function of the values detected by an electronic control device (6). The setting members are developed, in particular, as throttle valves, the driver being adapted to be brought into functional relationship with all setting members, and the electric setting drive being adapted to be brought into functional relationship with at least one of the setting members.

Abstract: A reset device (7) for the digit rollers (3) of a counter has a positioning spring (22) developed integrally on a shift drive bridge (9), the positioning spring being adapted to engage by means of a detent projection (21) into detent recesses (17-20) of the side surfaces (13-16) of a position setter (12). In this way, the position setter (12) passes in particularly reliable manner into each of its four possible positions.

Abstract: A electronic circuit for an automobile, in particular in an instrument cluster, is disclosed. The electronic circuit comprises a computer having at least one microprocessor and application-specific integrated circuits and it is arranged in a shielding housing for suppression of electromagnetic interference. For improved removal of heat and high-frequency decoupling, surface areas of the external shielding are electrically and mechanically closely coupled to corresponding surface areas on the conducting path and, in addition, the incoming and outgoing lines which are subject to interference are protected by suitable filters.

Abstract: A method of producing an input variable for a cross-coil indicating instrument from a measurement signal is disclosed in which the frequency of the measurement signal is converted into a frequency-proportional input current for the cross-coil indicating instrument (11). Furthermore, a circuit is disclosed in which an input terminal for the measurement signal is connected to a period measuring device (3, 4, 5) the output of which is connected to a divider (6). The output of the divider feeds a control variable which is proportional to the frequency of the measurement signal (f.sub.M) to an input (13) of a processing circuit (8, 10). The known method and the known circuit have the disadvantage that, in case of a low frequency of the measurement signal, a jerky movement of the pointer of the indicating instrument (11) can be observed.

Abstract: In an acceleration sensor, in particular for automobiles, at least two electrodes which are surrounded by a dielectric are arranged, substantially parallel to each other, in a housing and immersed over part of their length in an electrically conductive liquid. Flip-flops output pulses having durations based on capacitance of the sensor. Output signals of the flip-flops are combined arithmetically.

Abstract: An electronic injection system for Otto engines with injection nozzle (4) has a displaceable throttle body disposed in the intake air flow (2), and includes intake air mass measurement. In order to assure optimal measurement and dosaging of the mass flow of air at minimum structural expense and within a minimum space, particularly in the case of rapidly varying engine loads and speeds of rotation, the injection system has a convergent/divergent nozzle (12) with narrowest cross section adjustable by the nozzle body. The system includes a position indicator (18) for the throttle body, measurement devices for the pressure p.sub.O in front of the nozzle, and the pressure p.sub.L at the narrowest point of the nozzle and the air temperature T.sub.O in front of the nozzle. Also included is an electronic controller device (19) operative with at least the input variables p.sub.O, p.sub.L, T.sub.O and position (x) of the throttle body to provide an output variable opening time t.sub.O of the injection nozzle.