Abstract: An optically and aerodynamically optimized and particularly wind-insensitive cleaning apparatus for cleaning a surface of a sensor apparatus of a vehicle with a fluid cleaning agent. The surface is surrounded by an outer surface region with respect to which the surface is arranged so as to be substantially flush therewith or curved in a domed manner above it, and, in relation to the outer surface region, the nozzle is positioned in a recessed manner such that the spraying of the cleaning agent is realized below the outer surface region.

Abstract: A safe digital input circuit with a first input and a second input for reading in a sensor signal with a clock generator to generate a clock signal is shown. The safe digital input circuit includes a first clock output and a second clock output for connecting sensors to safely shut down a plant. A first and a second signal line are connected to a clock generator output of the clock generator to forward the clock signal to the first and second clock output.

Abstract: An apparatus for volume-controlled portioning of cleaning fluid, having a housing and having a piston unit which is arranged displaceably in the housing and which displaces a cleaning fluid from a chamber into an outflow channel. In order to provide an improved apparatus, which permits exact portioning with reduced temperature dependency and in a cleaning sequence which is as quick as possible. It is proposed that the piston unit includes a piston body and at least one valve device which is arranged on the piston body and which ensures that the chamber is filled with the cleaning fluid during the reverse movement of the piston unit.

Abstract: An optically, aerodynamically and economically optimized and particularly wind-insensitive cleaning apparatus for cleaning a surface of a sensor apparatus of a vehicle with a fluid cleaning agent. The surface is delimited by an encircling outer edge which is arranged so as to be substantially flush with a surrounding outer surface region, and the cleaning apparatus includes a flow body for guiding a fluid stream flowing from the spray nozzle to the surface and flowing away from the surface, wherein the flow body at least sectionally adjoins the outer edge of the surface, in particular completely surrounds the outer edge, and, at the outer edge, an outer surface of the flow body is oriented so as to be substantially tangential to the adjoining surface.

Abstract: An apparatus for volume-controlled portioning of cleaning fluid, having a housing and having a piston unit which is arranged displaceably in the housing and which displaces a cleaning fluid from a chamber into an outflow channel. In order to provide an improved apparatus, which permits exact portioning with reduced temperature dependency and in a cleaning sequence which is as quick as possible. It is proposed that the piston unit includes a piston body and at least one valve device which is arranged on the piston body and which ensures that the chamber is filled with the cleaning fluid during the reverse movement of the piston unit.

Abstract: An improved low-loss cleaning system for installation in a vehicle for cleaning a transparent element of an optical or optoelectronic apparatus. In order to optimize the cleaning with minimal use of liquid with different cleaning fluids at different viscosities in a wide temperature range, it is proposed that the cleaning system has a feed pump, which conveys a cleaning fluid from a storage container with a feed pressure Pv into a hydraulic line in the direction of a cleaning unit with a spray nozzle for applying cleaning fluid to the transparent element, wherein a device is interposed in the hydraulic line and shuts off the hydraulic line in a return direction and, when activated, supplies the cleaning unit connected downstream with a working pressure that is higher than the feed pressure.

Abstract: An optical or optoelectronic device with at least one transparent cover and with a cleaning device for cleaning the surface of the cover with a fluid cleaning agent. In order to effectively clean such a device, in particular a LiDAR device, without the external appearance being disturbed by visible components of a cleaning device, it is proposed that the jet of cleaning agent is directed against a reflector, which is at least temporarily or permanently arranged and aligned at a distance from the outlet opening and the surface, so that the jet of cleaning agent is reflected by the reflector and is deflected onto the surface as at least one spray jet.

Abstract: An optically, aerodynamically and economically optimized and particularly wind-insensitive cleaning apparatus for cleaning a surface of a sensor apparatus of a vehicle with a fluid cleaning agent. The surface is delimited by an encircling outer edge which is arranged so as to be substantially flush with a surrounding outer surface region, and the cleaning apparatus includes a flow body for guiding a fluid stream flowing from the spray nozzle to the surface and flowing away from the surface, wherein the flow body at least sectionally adjoins the outer edge of the surface, in particular completely surrounds the outer edge, and, at the outer edge, an outer surface of the flow body is oriented so as to be substantially tangential to the adjoining surface.

Abstract: An optically and aerodynamically optimized and particularly wind-insensitive cleaning apparatus for cleaning a surface of a sensor apparatus of a vehicle with a fluid cleaning agent. The surface is surrounded by an outer surface region with respect to which the surface is arranged so as to be substantially flush therewith or curved in a domed manner above it, and, in relation to the outer surface region, the nozzle is positioned in a recessed manner such that the spraying of the cleaning agent is realized below the outer surface region.

Abstract: Cleaning device for cleaning a transparent cover of a camera, in particular a lens of the camera, comprising at least one cleaning agent feed line and at least two cleaning agent spraying elements.

Abstract: A cleaning device for cleaning a transparent element of an optical or optoelectronic device with a fluid cleaning agent, includes a housing in which the device is arranged. The housing is equipped with an annular channel which can be filled with the cleaning agent via a cleaning agent inlet and encloses at least some areas of the transparent element, and at least one nozzle which is designed to deflect the cleaning agent onto the transparent element and is supplied from the annular channel. The cleaning device allows an increase of uptime and ensured functionality of the optical or optoelectronic device in all weather conditions and operating conditions or to maintain a high degree of uptime and ensured functionality at all times. At least one electrically conductive heating element is provided for heating the annular channel and/or the area of housing directly adjoining the annular channel or the cleaning agent inlet.

Abstract: An electronically regulated cleaning system independently adjusted of the driver and adaptively to continuously variable operating conditions, for installation in a vehicle for cleaning at least one transparent element with a fluid cleaning agent, includes: at least one additive container storing additive for mixing with the cleaning agent, at least one electrically switchable metering device controlling mixing of the additive and cleaning agent, at least one electronic control unit adaptively controlling the electrically controllable components of the cleaning system, at least one cleaning agent filling level sensor monitoring the filling level of the cleaning agent and communicating with the electronic control unit, at least one freezing point sensor monitoring the mixture-dependent freezing point of the cleaning agent in the container and communicating with the electronic control unit, at least one surroundings temperature sensor monitoring the temperature of the surroundings outside the vehicle and commun

Abstract: A cleaning device for cleaning a transparent element of an optical or optoelectronic device with a fluid cleaning agent, includes a housing in which the device is arranged, at least one fluid inlet arranged in the housing, and at least one nozzle supplied from the fluid inlet. The nozzle is designed to deflect a cleaning agent jet onto the transparent element, and the jet direction of the cleaning agent jet is substantially transverse to an optical axis of the transparent element. The fluid inlet is designed for a throughflow of a cleaning liquid out of a hydraulic channel and compressed air out of a pneumatic channel. The hydraulic channel has a hydraulic nonreturn valve, and the pneumatic channel has a pneumatic nonreturn valve, the nonreturn valves opening the channels in the direction of the nozzle and blocking the channels in the opposite direction.

Abstract: Cleaning device for cleaning a transparent cover of a camera, in particular a lens of the camera, comprising at least one cleaning agent feed line and at least two cleaning agent spraying elements.

Abstract: A shield cleaning system, operating solely by spraying with washing fluid, for shields (2) of an automobile light has a plurality of washing nozzles (12-14) which are arranged on a washing arm (6) pivotable about a pivot axis (7) and which are located opposite and at a short distance from the shield (2) and together spray a part region of the shield (2) with washing fluid. The washing nozzles (12-14) are guided by the washing arm (6) over that region of the shield (2) which is to be cleaned.

Abstract: A process for production of 1,3-propanediol including the steps: (a) hydrating acrolein in the presence of an acid hydration catalyst; (b) catalytically hydrogenating the reaction mixture of step (a), which reaction mixture comprises 3-hydroxypropionaldehyde and is freed of unreacted acrolein; (c) refining the reaction mixture of step (b) containing water, 1,3-propanediol and the by-products boiling higher than 1,3-propanediol; and, (d) treating 4-oxa-1,7-heptanediol to form 1,3-propanediol by (1) removing a boiler sump comprising 4-oxa-1,7-heptanediol from the refining step (c), (2) treating the boiler sump in an aqueous solution in the presence of an acid catalyst at about 200 to about 300° C. to form a solution comprising 1,3-propanediol, (3) neutralizing the solution obtained is step (2), and returning the neutralized solution from step (3) to the refining step (c).

Abstract: A shield cleaning system, operating solely by spraying with washing fluid, for shields (2) of an automobile light has a plurality of washing nozzles (12-14) which are arranged on a washing arm (6) pivotable about a pivot axis (7) and which are located opposite and at a short distance from the shield (2) and together spray a part region of the shield (2) with washing fluid. The washing nozzles (12-14) are guided by the washing arm (6) over that region of the shield (2) which is to be cleaned.

Abstract: A cleaning device for a motor vehicle headlight lens, a washer nozzle (6) is arranged on a support (11) having tubes (12, 13) which can be moved in the manner of a telescope. An outer tube (12) of the support (11) can be moved by an adjusting arrangement (5) having an electric motor (19). A connecting branch (16) for a washer fluid line (9) is latched to a fixed guide sleeve (14). As a result, the cleaning device is of particularly compact construction.

Abstract: A cleaning device for a window/headlamp cover (5) of a motor vehicle has two washer nozzles (3, 4) which are manufactured as ajoint component (2) and in each case produce strip-shaped spraying regions (8, 9) on the window/headlamp cover (5). The spraying regions (8, 9) are arranged one above the other and thus complement one another. This means that a large region of the window/headlamp cover (5) is wetted with washing fluid without washing fluid falling alongside the window/headlamp cover (5).