Windscreen wiper system for vehicles

Abstract

The windshield wiper system is constructed somewhat differently, and its operation also differs from that of conventional windshield wipers. Here, the windshield washer nozzles are used to remove dirt from the windshield directly with a high-pressure water jet. The high-pressure nozzles are installed in the same location as the conventional washer nozzles. Unlike statically mounted nozzles, these are electrically movable or rotatable. The pressure is generated by a high-pressure pump. Another design utilizes a high-pressure generator that, through the ignition of oxyhydrogen gas, produces an extremely high pressure pulse, which propels the windshield washer fluid through the nozzles in the form of a wide and very thin high-pressure jet. The dust particles and water from the windshield are removed solely by these high-pressure water jets.The pressure pulses are delivered at a high repetition rate, so that dozens or more high-pressure water jet pulses hit the windshield every second. This high repetition rate means that the dirt particles or water are subjected to extremely high pressure.

Description

[0001] The device described here is a windshield wiper in which, instead of wiping the vehicle windshield with a wiper, dust particles and water masses are removed from the windshield solely by air pressure pulses that exert a high pressure on the water in a water chamber, which is displaced through the nozzles, thereby generating several high-pressure water jet pulses that remove the dirt from the vehicle windshield by their kinetic energy.

[0002] Windscreen wipers for vehicles have existed for over a hundred years. The first ones were operated manually. Later, electric motors and gearboxes were installed, controlled by a lever inside the vehicle. Washer nozzles, which spray water onto the windscreen, were added later. This method has remained essentially the same to this day. Generally, washer fluid is sprayed onto the windscreen using nozzles, usually located on the hood of cars, and on the windscreen wipers of most commercial vehicles (buses, trucks). On most rail vehicles, the nozzles are located on the front of the locomotive or on the windscreen wipers themselves (e.g., on the ICE 3). The water sprayed onto the windscreen, aided by the wiping motion of the wipers, cleans the surface. Cleaning agents and antifreeze are added to the water as needed.

[0003] The most commonly used windshield washer pump is a gear pump powered by 12 volts. It delivers approximately 1–1.8 liters per minute at a pressure of approximately 1.5–2.2 bar and is self-priming. This type of self-priming gear pump is suitable for pumping washer fluid in the windshield washer system. This wets the windshield, making it easier for the wipers to remove dirt. However, the resulting water jet cannot directly sweep the dirt off the windshield.

[0004] Patent application DE 20 2009 013 452 U1 describes a hingeless windshield wiper consisting of a base station, two windshield covers, spring steel, and rubber strips. The base is mounted between the spring steel and rubber strips, with the windshield covers integrated on both sides. An adapter connects the base station to the wiper arm. The curvature of the windshield covers is eccentric; on the long side, it forms a concave curve, while on the vertical side, the curvature decreases from the inner end to the outer end, while simultaneously increasing towards the outside to create a smooth curve.

[0005] DE 11 2012 004 969 B4 also describes a windshield wiper. This windshield wiper is designed by pivotally coupling several levers and comprises a first lever and a second lever. The second lever has a coupled end and two side walls. The coupled end extends along a longitudinal direction and has two sides perpendicular to this longitudinal direction. The two side walls have inner surfaces facing each other, each extending from the two sides to a first side in a perpendicular direction. The coupled end has a coupling section.

[0006] DE 20 2005 016 941 U1 describes a windscreen wiper for vehicle windscreens, characterized by a wiper profile with at least one scraper for contact with the vehicle windscreen and a wiper profile receptacle for receiving the wiper profile.

[0007] WO 2018068892 A1 describes a windshield wiper with a wiper arm and a wiper blade, as well as a cover attached to the wiper arm, in which one or more nozzles for windshield washer fluid are integrated. The windshield washer fluid supply can also be integrated into the cover. Furthermore, the cover is designed such that the wiper blade, the wiper arm, and the cover can be detached from one another. In its resting state, the cover closes the gap between the hood and the windshield and can be moved into a compact state for operation via a mechanism.

[0008] The invention specified in claims 1 to 13 is based on the objective of creating a windscreen wiper for vehicles which is able to remove water or dust particles from the windscreen of a vehicle without mechanical contact.

[0009] This problem is solved by the features listed in claims 1 to 13.

[0010] The advantages of the invention are: - relatively simply constructed - robust and reliable, - cost-effective.

[0011] Exemplary embodiments of the invention are described with reference to the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 to Fig. 8 explained. It shows: Fig. 1. One embodiment, wherein rigid high-pressure nozzles coupled to a high-pressure pump wash the windshield with a wide jet of high-pressure water, Fig. 2 a special high-pressure pump that uses explosive gases to create high pressure on the water, Fig. 3 Another illustration with a high-pressure generator that generates an extremely high pressure pulse by igniting oxyhydrogen gas, Fig. 4 Another embodiment in which the nozzles are installed in a way that allows them to swivel or rotate electrically, Fig. 5 Another representation, wherein the nozzle openings, or one of them, are designed in the form of a slit, Fig. 6 a cross-section of the combustion chamber and the hollow cylindrical water chamber, Fig. 7 another embodiment with swiveling nozzles, Fig. 8 an embodiment with a hollow sphere nozzle which is directly equipped with a combustion chamber and water chamber.

[0012] This windshield wiper is practically invisible. Instead of mechanical rubber wiper blades, it uses nozzles 1 that emit high-pressure jets of water 2. The high pressure is generated by explosions of hydrogen 3 (oxyhydrogen gas) in a small combustion chamber 4 and transferred to water 5. This produces water jet pulses 2 that carry away dirt and dust particles 6 from the windshield 7.

[0013] Several exemplary embodiments are described here, with the nozzle arrangement and design varying to a greater or lesser degree. In some variants, the nozzles are rigidly mounted to the vehicle, while others feature swiveling / rotating nozzles.

[0014] Therefore, this windshield wiper system is built somewhat differently, and its functionality is also not the same as that of conventional windshield wipers.

[0015] The operating principle of this invention is relatively simple. Nozzles are used to carry dirt away from the vehicle's windshield directly with a high-pressure water jet. With a few modifications, even the windshield washer nozzles already installed on the vehicle can be used for this purpose. This windshield wiper system utilizes the kinetic energy of explosively expandable gases to generate high pressure on portioned amounts of water, which strikes the windshield 7 in the form of numerous short, high-pressure jets 2 to remove dust or water.

[0016] The invention uses a different technique for cleaning the vehicle windshield surface. Here, the high-pressure nozzles 1 can be installed rigidly or movably. The pressure does not come from low-pressure pumps, but from a high-pressure pump 8 ( Fig. 1) or from a special high-pressure pump that uses explosive gases ( Fig. 2) to generate high pressure on the water. This special high-pressure pump 9 consists of a combustion chamber 10 in which hydrogen 11 (oxyhydrogen gas 3) is ignited by high-voltage electrodes 12 and a high-voltage source 13. Here, a high-pressure vapor pulse is generated, which comes from the explosion of the hydrogen ignition in the combustion chamber 10. The pressure wave displaces the water from a water chamber 14 and sweeps across the windshield 7 in the form of a horizontally wide jet of water 2, pushing away the dirt or rainwater. Instead of sweeping the windshield with a wiper, the dust particles and water masses are simply washed away from the windshield by jets of water generated by nozzles installed at the top or bottom edge of the windshield. Each nozzle can be assigned to a specific area of ​​the windshield that it is intended to clean.This ensures that the water jets deliver enough concentrated kinetic energy to remove dirt from the entire surface of the windshield.

[0017] The Fig. Figure 3 shows another illustration of the variant with a high-pressure generator that, through the ignition of oxyhydrogen gas, generates an extremely high pressure pulse, which discharges the windshield washer fluid in the form of a wide, high-pressure jet through the nozzles. Each nozzle's water jet hits a defined area of ​​the windshield. Several nozzles are installed, capable of covering the entire surface of the windshield with their water jets. Instead of continuous water jets, pulsed high-pressure water jets 2 are generated, which loosen and carry away dirt particles. An electronic control unit can deliver pressure pulses with an adjustable repetition rate, which is controlled by the ignition pulses and hydrogen injectors in the combustion chamber.

[0018] On the Fig. Figure 4 shows another embodiment, in which the nozzles are mounted in a pivotable or rotating manner. These pivotable or rotating nozzles 1 can also be installed on the hood 15 or in the same location as the conventional windshield washer nozzles. In contrast to the statically mounted nozzles, these are electrically movable or rotatable, or pivotable back and forth, by means of actuators 16. The pressure here, too, does not come from low-pressure pumps, but from a high-pressure pump 8 or an oxyhydrogen pressure generator 9. The nozzles pivot back and forth and each generates a water jet 2 that "moves" like a conventional windshield wiper to sweep across the entire windshield surface.The water jet is vertically wide but horizontally very narrowly focused, so that it strikes the windshield along a narrow line 17 (or narrow band) with high kinetic energy, extending from the lower edge 18 to the upper edge 19 of the windshield. Because the water jet is highly focused, its abrasive effect is significantly more intense than that of a wide water jet at the same pump pressure. The line or band area struck on the windshield by the water jet is long and quite narrow (approx. 0.5–2 cm). This area is cleaned immediately upon impact of the water jet on the windshield surface 20. However, this cleaned area would not be sufficient to clear the driver's view. Therefore, the nozzles swivel back and forth, gradually spraying the high-pressure water jet across the entire surface of the windshield.When pressure is generated by a conventional high-pressure pump, a continuous jet of water is emitted. The nozzles are swiveled back and forth very rapidly by actuators 16, so that the entire windshield surface is free of dirt particles in fractions of a second. From the outside, this looks like a swiveling pair of water wipers, glancing diagonally across the surface of the windshield. Instead of two nozzles, three or more can be installed, which then do not need to swivel as far to wash the entire windshield area. However, when high pressure is generated by hydrogen or butane gas ignition, short pulsed water jets 2 are produced instead of continuous jets. The pulsed jet discharge lasts only a few fractions of a second (approx. 0.05 - 0.12 s), so it is important that the nozzle swivels very quickly. The length of the water jet pulse is approximately 5 m and it is completed in approximately...The water is completely expelled from the nozzle in 0.05 seconds, resulting in a water jet velocity of 100 m / s. With a 3 mm jet diameter, approximately 35 ml of water are delivered per pressure pulse over a jet length of 5 m. This 5 m long high-speed water jet would have to graze the entire windshield within 0.05 seconds, or, with two installed nozzles, each would cover half of the windshield surface. However, the pressure pulses can be generated in such a way that each nozzle sweep cleans a portion of the windshield, and then the next pressure pulse treats the remaining area.

[0019] Instead of using a physical windshield wiper to scrape the windshield, dust particles and rainwater are simply removed by high-pressure water jets through nozzles installed at the top or bottom edge of the glass. In the version with oxyhydrogen ignition, small portions of hydrogen 11 are injected into a combustion chamber 10, mixed with ambient air, and ignited electrically. This creates strong and powerful pressure waves that displace the water from a water chamber (14, 21) and release two water jets 2 at an angle onto the windshield 7, carrying away the dirt. The pressure pulses can be delivered at a high repetition rate, so that dozens or more high-pressure water jet pulses strike the windshield every second.The high repetition rate means that the dirt particles or water are subjected to extremely high pressure. This pressure is not constant, but rather varies due to the pulsed action of the water jets. This interplay with the variable pressure forces exerted on the dirt particles loosens the dirt relatively quickly from the windshield, making it easier to remove. The nozzles can be installed in the same location as the original windshield washer nozzles.

[0020] On the Fig. Figure 5 shows another illustration. Here, the nozzle openings, or one of them, are constructed in the form of a gap 22. The high-pressure generator is in the form of a combustion chamber designed like a hollow cylinder (tube) 23, closed at both ends. The longer gap (or several smaller gaps) is installed along the cylinder axis 25 against the cylinder wall 24. A cylindrical water chamber 21 is directly coupled to the hollow cylinder. As soon as the oxyhydrogen gas is ignited there, the gas flows from the hollow cylinder into the water chamber and displaces the water, which strikes the windshield in the form of a wide jet of water. To prevent the water from shifting (e.g., due to centrifugal forces when cornering) into the hollow cylindrical water chamber 21, the cylindrical water chamber is filled completely with water, or alternatively, several partitions 26 can be installed inside it, dividing the water mass into several smaller portion chambers 27.The gap (the gap nozzle) has a casing 28 that is slightly raised and prevents the water from flowing out of the hollow cylindrical water chamber without pressure. Because the gap (the gap nozzle) is angled upwards towards the windshield, the explosive pressure from the combustion chamber creates a jet of water that strikes the windshield obliquely from below. The hollow cylindrical water chamber 21 is completely emptied in the process. It is then refilled with a small amount of water from a water reservoir 29.

[0021] On the Fig. Figure 6 shows a cross-section of the combustion chamber and the hollow cylindrical water chamber. It can be seen that the gas pressure applies to the water 5 from above, which is then forced downwards and directed obliquely upwards by a half-screw wall construction 30. From the slot nozzle 22, it emerges as a horizontally wide jet of water 2, which strikes the windshield 7 like a rather thin wall of water. In addition to the nozzle opening, the combustion chamber can also be provided with further openings 45 if the cycles (H 2 -Suction, water inlet, fresh air intake) should be optimized.

[0022] The gap nozzle (the gap) and the hollow cylinder are positioned so that the high-pressure jet strikes the windshield obliquely from below. The hollow cylinder is installed where the windshield wipers were previously located. The amount of water, which is transported in measured quantities from the water reservoir 29 into the hollow cylinder's water chamber by a small pump 31, is intended to be quite small and can range from a few milliliters (e.g., 10–20 ml) to dozens of milliliters (approx. 30–80 ml). It is important to note that this amount of water is discharged at high pressure in a pulsed, explosive jet onto the windshield within fractions of a second. The pressure generated can reach several hundred bar. This is intended to clean the windshield without conventional windshield wipers. Because the high-pressure water jet strikes the windshield from below, the airflow from driving will slightly increase the speed of the water jet.The high-pressure water jet is not emitted continuously, but rather in pulses with a high repetition rate, which optimally loosens and carries away the dirt particles. Due to the rapid, pulsed water jet delivery, the driver hardly notices it and their vision is barely impaired.

[0023] The windshield wiper system is suitable for relatively loose to medium-firm dirt on the windshield. Unfortunately, it cannot remove stubborn dirt. Dust, water (rainwater), and other types of dirt that don't remain on the windshield for long and can impair visibility are effectively removed with this system. Snow and rainwater, in particular, are easily removed. Due to the extremely high water jet velocity, hardly any droplets remain on the windshield surface. Naturally, the water-repellent coating on the windshield and the airflow from driving also help to clear the water from the windshield.

[0024] On the Fig. Figure 7 shows another embodiment with swiveling nozzles. The vehicle has one or more rapidly swiveling / rotating nozzles 1. The nozzles can be installed in small hollow spheres 32, each of which is electrically driven and rotated in a ball socket 33. The hollow spheres can also each be equipped with a small nozzle slot 34, which functions like a nozzle. To achieve rotation of the hollow sphere, it is connected in the center to an axle shaft 35, which is mounted in the ball socket and coupled at one end to an electric drive. Suitable electric drives include, for example, electric motors, stepper motors, or simple electromagnets. The hemisphere can be magnetic (or consist of a magnet) and can be partially rotated by an electromagnet installed in the ball socket. It is perfectly sufficient if the electromagnet can rotate the hollow sphere by, for example, approximately 45° to 120°.

[0025] In another embodiment, the hollow sphere 32 is equipped directly with a combustion chamber 4. For this purpose, a vertically arranged partition 36 is installed inside the hollow sphere, which starts at the top and extends downwards, but does not completely separate the hollow sphere ( Fig.8) It divides the hollow sphere into two chambers: a hollow sphere water chamber 37 and a hollow sphere combustion chamber 38, which are separated at the top but converge at the bottom. First, the hollow sphere water chamber is filled about halfway with approximately 10-30 ml of water. This is followed by the injection of oxyhydrogen gas 3, which is introduced into the hollow sphere combustion chamber. The high-voltage electrodes 12, which generate an electrical spark 39, are installed in the top of the hollow sphere combustion chamber. The high-voltage electrodes are partially encased in a water-repellent material 40 to prevent a short circuit caused by moisture or water. As soon as the oxyhydrogen gas is ignited, pressure builds up that will instantly displace the water from the other half of the hollow sphere, namely from the hollow sphere water chamber. In this way, a high-pressure jet of water is generated, which strikes the windshield.Because the water jet isn't as wide as the entire windshield, it can only clean a portion of it. Ideally, each pulse would clean approximately 15% of the windshield. Since two such jets (each emanating from one of the two hollow spheres) are emitted, 30% of the windshield is already clean after just two pulses. With the next pulse, the hollow spheres rotate by approximately 30-35°, and another water jet pulse follows, cleaning a further 15% + 15% of the windshield. Finally, the hollow spheres rotate again by approximately 30-35°, and the third water jet pulse cleans the remaining portion of the windshield. All three water jet pulses are emitted within 0.1-0.3 seconds, so the windshield is clear within this time. In combination with a windshield featuring a water-repellent coating, this device is ideal for removing dirt from the windshield.

[0026] The amount of oxyhydrogen gas injected into the combustion chamber for an ignition pulse is a few cm³. 2The pressure is perfectly sufficient to displace approximately 10-30 ml of water. The injection of the oxyhydrogen gas can be achieved via solenoid valves 41 or by an injector that directs small, portioned amounts of hydrogen into the hollow sphere. The two built-in high-voltage electrodes in the combustion chamber within the hollow sphere are connected to a high-voltage source 13 via a control unit 42 or directly. The high-voltage source is switched on via the control unit (or the circuit to the electrodes is closed) and is connected to the high-voltage electrodes. As soon as the hollow sphere is electrically rotated and reaches a rotational position with its opening / gap 34 facing the windshield, ignition of the gas mixture is initiated. A spark is generated, igniting the gas mixture. A powerful pressure pulse is created from the expanding gases, forcing the water out through the hollow sphere opening (or nozzles).A high-pressure, pulsed jet of water is generated, which strikes the vehicle's windshield at an angle and mechanically removes the dust or rainwater present there through its kinetic energy.

[0027] An electrically (or spring-driven) piston can be installed in the hydrogen storage container, which pushes the hydrogen into the hollow sphere in small portions by generating pressure in the hydrogen storage container.

[0028] While it's possible to inject oxygen or fresh air into the hollow sphere along with the hydrogen, this isn't strictly necessary. As long as the rotating hollow sphere nozzle is oriented with its opening facing the windshield, it will fill with fresh air on its own. It is then electrically rotated, and its opening is closed by the wall of the spherical socket. As it continues to rotate, it reaches a position where its opening / gap aligns with the inlet 43 of the hydrogen tank 44, allowing a small amount of hydrogen 3 to flow from the tank into the hollow sphere combustion chamber 38 and mix with the fresh air. To enable this, the pressure in the hydrogen tank must be at least one bar. The pressure in the hydrogen tank can be significantly increased by a piston, allowing a small amount of hydrogen to flow from the hydrogen tank into the hollow sphere.The hollow sphere nozzle is then electrically rotated so that its opening is closed again by the spherical socket wall. As the hollow sphere continues to rotate (approximately 120° - 180°), it enters another rotating position, exposing its opening and pointing it towards the windshield. At precisely this moment, a high-voltage pulse is discharged via the high-voltage electrodes, generating an electrical spark. The gas mixture is ignited inside the hollow sphere and expands at high speed. High pressure is exerted on the water, which is then expelled through the opening / nozzle towards the windshield surface in the form of a high-pressure water jet. This jet can carry away dirt particles from the windshield surface.Because the hollow sphere rotates very quickly and also incorporates a partition that divides the upper section into a combustion chamber and a water chamber, no further measures are necessary to prevent hydrogen from escaping. The hydrogen is located at the top, while the water is at the bottom, in the second chamber, namely the water chamber of the hollow sphere. Even if the hollow sphere is positioned with its opening facing upwards, for example, towards the windshield, the hydrogen cannot escape because the partial partition, which does not extend all the way to the bottom, prevents this. Ignition occurs so rapidly that the hydrogen barely has time to leave the hollow sphere in its unburned state. The hollow sphere nozzle is designed to rotate very quickly to clean a wider area of ​​the windshield.Immediately after ignition, when the pressure inside the hollow sphere decreases, fresh air flows in. This air can then be mixed with the hydrogen again during the next rotation of the sphere with the opening facing downwards, or by injection. The hollow sphere can be rotated continuously several times, for example, 5 to 20 times, with ignition occurring each time the opening is facing the windshield. This generates approximately 5 to 20 pressure pulses very quickly, within fractions of a second, which thoroughly clean the windshield in sections. For effective removal of dirt particles, the opening in the hollow sphere should be a few millimeters long and narrow. In larger versions (e.g., for trucks, trains, buses, ships, helicopters, airplanes, etc.), it can also be several centimeters wide.

[0029] The water, which is displaced by a high-pressure pump or a gas-pressure pump with hydrogen ignition, can additionally be heated by a built-in heating element and released as a hot water jet onto the windshield.

[0030] This device can be installed multiple times in a single vehicle. Whether the nozzles or hollow spheres are installed at the top or bottom is left to the manufacturer's discretion. The device can be installed in all types of vehicles.

[0031] It should be noted that the windshield wiper system described here can also be installed and used in parallel with the existing, conventional windshield wipers in the vehicle. In this case, the system would be ideal for rainwater or light dirt, while the conventional wipers would be used when the windshield is so dirty that it cannot be cleaned with the new technology. REFERENCE MARK LIST 1 nozzle / high-pressure nozzle 2 water jets, water jet impulses 3 Hydrogen / Oxyhydrogen 4 Combustion chamber 5 Water 6 dust particles / dirt 7 Windscreen 8 High-pressure pump 9 Special high-pressure pump / oxyhydrogen pressure generator 10 Combustion chamber 11 Hydrogen 12 high-voltage electrodes 13 High-voltage source 14 Water chamber 15 Hood 16 actuators 17 line or band area 18 Bottom edge 19 Top edge 20 Windscreen surface 21 Hollow cylindrical water chamber / cylindrical water chamber Hollow cylinder water chamber 22 columns 23 Combustion chamber in the form of a hollow cylinder (tube) 24 cylinder wall 25 cylinder axle 26 partition walls 27 smaller portion compartments 28 Sheathing for the gap 29 Water storage tank 30 half-snail wall construction 31 Small pump 32 Hollow spheres 33 Ball pan 34 ball-nozzle gap 35 axle shaft 36 Vertically arranged partition wall 37 Hollow sphere water chamber 38 Hollow sphere combustion chamber 39 Electric Spark 40 Water-repellent material 41 solenoid valves 42 Control 43 Inlet of the hydrogen tank opening 44 hydrogen tanks 45 Another opening / inlet opening into the combustion chamber

Claims

[1] Windscreen wiper system for vehicles, characterized by that instead of physical windshield wipers, it consists of at least - an electrically rotatable hollow sphere (32) having a partial partition, which is vertically oriented, separating the upper region of the hollow sphere into a combustion chamber (4, 10) and a water chamber (14), the two chambers being connected to each other at the bottom, which is installed at the edge of the windshield or in the immediate vicinity of the windshield (7) in the vehicle, which is provided with a nozzle (1) or a longitudinally arranged gap (22) on the wall of the hollow sphere through which a fluid can flow out of the hollow sphere in the form of a wide and thin fluid jet (2) directed obliquely towards the surface of the windshield, - a hydrogen storage container (44) equipped with at least one solenoid valve (41) and a gas line through which it is coupled to the hollow sphere (32), - an injector or gas portioner that directs the hydrogen (3, 11) from the hydrogen storage container into the hollow sphere (32) in portioned quantities, - an electrical high-voltage ignition system consisting of a high-voltage source (13) and electrodes (12) built into the hollow sphere, - a control unit (42) which is coupled to the high-voltage ignition system and the windshield wiper command control unit. [2] Windscreen wiper system for vehicles according to claim 1, characterized by , that the hollow sphere (32) has several radially arranged lamellae in it, which are built into the inner wall of the hollow sphere, the length of which is shorter than the inner diameter of the hollow sphere, which divide the volume of the hollow sphere into several chambers, all of which are connected to each other in a pressure-transmitting manner. [3] Windscreen wiper system for vehicles according to claim 1 or 2, characterized by, that the hollow sphere (32) is coupled to a shaft (35) which is mounted in a ball socket (33). [4] Windscreen wiper system for vehicles according to claim 3, characterized by , that at least one end of the shaft is connected to the electric drive or the actuator (16). [5] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by , that the hollow sphere (32) is magnetic and that at least one electromagnet is installed in the ball socket (33) which can rotate the hemisphere at least partially. [6] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by , that the hydrogen storage container (44) is equipped with an injector that injects portioned amounts of hydrogen (3, 11) into the hollow sphere (32). [7] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by, that the hydrogen storage container (44) is equipped with a piston, which is driven electrically or by spring force, which presses portioned quantities of hydrogen (3, 11) into the hollow sphere (32). [8] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by , that the control (42) is designed such that fluid pressure pulses (2) can be generated with a high repetition rate. [9] Windscreen wiper system for vehicles, characterized by that instead of physical windshield wipers, it consists of at least - several nozzles (1) installed at the edge of the windshield or in the immediate vicinity in the vehicle, directed obliquely towards the windshield surface, - one or more water chambers (14) which are filled with small quantities of water (5) which are each coupled to the nozzles, - a water reservoir (29) that fills the water chambers (14) with water, - one or more combustion chambers (10, 38) which are coupled to the water chambers (14) in a pressure-transmitting manner, - a hydrogen storage tank (44) equipped with at least one solenoid valve (41) and a gas line through which it is coupled to the combustion chamber (10), - an injector or gas portioner that directs the hydrogen (3, 11) from the hydrogen storage container (44) into the combustion chamber (10, 38) in portioned quantities, - an electrical high-voltage ignition system consisting of a high-voltage source (13) and electrodes (12) installed in the combustion chamber (10, 38), - a control unit (42) which is coupled to the high-voltage ignition system and the windshield wiper command control unit [10] Windscreen wiper system for vehicles, characterized by that instead of physical windshield wipers, it consists of at least - a small hollow sphere (32) with a hole, which can rotate rapidly electrically in a built-in ball socket (33), - an actuator (16) or drive that can rotate the hollow sphere (32), - a hydrogen storage container (44) which is installed in the spherical socket (33) which has an opening (45) through which the hydrogen (3) flows directly from the hydrogen storage container (44) into the hollow sphere (32) and fills it, as long as the hollow sphere is in a rotating position with the opening facing the hydrogen storage container (44) when rotating, - two high-voltage electrodes (12) located inside the hollow sphere (32), - a high-voltage source (13) connected to the high-voltage electrodes, - an electronic control (42) which is coupled to the actuator (16) or the drive of the hollow sphere (32), and thus controls the rotation of the hollow sphere and is connected to the high voltage source (13), which initiates an electrical ignition of the gas mixture of hydrogen (3) and air, precisely at the time when the hollow sphere assumes a rotational position with the opening obliquely towards the windshield (7). [11] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by that it is equipped with an electrolyzer capable of producing the necessary oxyhydrogen gas. [12] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by that the water is heated by a built-in heating element. [13] Windscreen wiper system for vehicles according to one of the preceding claims, characterized by , that it can be installed and used in parallel with the conventional windscreen wiper systems already on the market.

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