Knorr-Bremse Patente

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One aspect of the invention relates to a sensor test system (100) for a pressure sensor (251, 252) in an electronic parking brake, EPB, (200) of a vehicle, where the pressure sensor (251, 252) is configured to measure a pressure in a pressure chamber (225) or in a line (218) of the EPB (200). The sensor test system (100) comprising a pressure setting module (110), configured to set the pressure; and a detection module (120), configured to detect, based on pressure set by the pressure setting module (110) and based on a measured pressure from the pressure sensor (251, 252), a potential malfunction of the pressure sensor (251, 252), and to issue a warning signal if the potential malfunction is detected. Further aspects of the invention relate to a method for testing a pressure sensor and a computer product.

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A method for determining the wear state of a friction surface (4) of a wear element (1), wherein the wear element (1) comprises a base element (2) with a non-even surface (7) with at least one projection (6) and a protective coating (3) at least partially covering the at least one projection (6) to form the friction surface (4), wherein the method comprises the steps:- step (S1): providing a detection means (9) configured to detect at least one wear characteristic of the friction surface (4);- step (S2): establishing and/or evaluating boundary conditions for detecting the at least one wear characteristic of the friction surface (4);- step (S3): detecting the wear characteristic of the friction surface (4); and- step (S4): determining the wear state from the detected wear characteristic.Further, a friction brake and a vehicle are disclosed.

A wear element (1) for frictional force transmission is disclosed. The wear element (1) comprises a base element (2), a protective coating (3) and a friction surface (4) for frictional force transmission, wherein the base element (2) comprises a non-even surface (7) with at least one projection (6), wherein the protective coating (3) is provided on the non-even surface (7) to at least partially form the friction surface (4) in an unworn state of the wear element (1).Further, a friction brake, a vehicle and a method for producing a wear element are disclosed.

The present invention relates to a method for detecting the presence of a trailer, comprising: inflating (S1) a trailer supply line (106) and/or using a pressurized trailer supply line (106); exhausting and/or deflating (S2) the trailer supply line (106); obtaining (S3) the pressure being formed in the trailer supply line (106) during inflating (S1) and/or using and/or during exhausting and/or deflating (S2); and determining (S4), if a trailer is connected to the trailer supply line (106), based on the obtained pressure, in particular an obtained pressure curve. Further, the present invention relates to a system (100) for detecting the presence of a trailer and to a vehicle (V), in which said system (100) is included.

An image synthesizer for a surround monitoring system for a vehicle comprises a receiving module (110) for receiving a first image (211) from a first camera (201), a second image (212) from a second camera (202), and a control signal (225) from a control module (220); and a combining module (120) for combining the first image (211) and the second image (212) in the overlapping region (213) and, dependent on the control signal (225), to generate a combined image (123), wherein the control signal (225) indicates a condition external to the vehicle.

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Es wird ein Verfahren zum Betreiben einer Datenkommunikation zwischen Funktionseinheiten (105, 110) für ein Fahrzeug (100) vorgestellt. Es wird eine vordefinierte Anzahl von durch eine Sendeeinheit (110) an eine Empfangseinheit (105) ausgesandten Datenpaketen (115) in einem Datenpuffer (124) der Sendeeinheit (110) gesammelt, um einen Datenblock (125) zu erzeugen. In jedem vordefinierten Zeitschritt wird ein Datenpaket (115) ausgesandt, wobei die Datenpakete (115) über eine vordefinierte Sammelzeitdauer hinweg gesammelt werden. Nachfolgend wird eine Signatur (127) zum Authentifizieren des Datenblocks (125) bestimmt, wobei die Signatur (127) über eine vordefinierte, mehrere Zeitschritte andauernde Bestimmungszeitdauer hinweg bestimmt wird. Wiederum nachfolgend wird die Signatur (127) in mehreren Teilen über eine vordefinierte Sendezeitdauer hinweg von der Sendeeinheit (110) an die Empfangseinheit (105) gesendet, wobei pro Zeitschritt ein Teil der Signatur (127) gesendet wird. Dabei ist eine Summe der Sammelzeitdauer, der Bestimmungszeitdauer und der Sendezeitdauer kleiner als eine vorgegebene System-Fehlertoleranzzeit.

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Afoot brake device for vehicles, particularly utility vehicles or commercial vehicles, comprises a foot brake pedal (5) for activation by the driver of the vehicle, and a first and/or a second foot brake sensor (60, 70) being coupled with the foot brake pedal (5), wherein the first and/or second foot brake sensor (60, 70) are configured to determine a respective position of the foot brake pedal (5) upon activation thereof by the driver, and wherein the first and/or second foot brake sensor (60, 70) are configured to generate a first and/or a second electric control signal corresponding to said position of the foot brake pedal (5). The second foot brake sensor (70) functions as a back-up sensor in case of failure of the first foot brake sensor (60). The foot brake device further comprises at least one member (20, 30, 40) which is configured to generate a physical counter force against which the foot brake pedal (5) must work upon its activation by the driver, wherein the amount of said counter force is substantially proportional to the degree of activation of the foot brake pedal (5) by the driver and indicates the degree of activation of the foot brake pedal (5) to the driver. The counter force generating members comprise a first spring element (20) and a second spring element (30, 40) with different characteristics. The foot brake device further comprises a first and/or a second electronic control device (80, 90), wherein the first and/or second electric control signal generated by the first and/or second foot brake sensor (60, 70) is received by the first and/or second electronic control device (80, 90) which generates a third and/or fourth electric control signal which activates at least one brake actuator (110, 120, 130, 140) to brake the vehicle in an amount corresponding to the degree of activation of the foot brake pedal (5) by the driver.

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A method is disclosed for adjusting the speed (v<ego>) of a vehicle (EGO) moving with an initial speed (v<ego, 0>) to a target speed (v<ego, target>), comprising the steps: - step (S14): determining a control profile comprising at least one control profile part, wherein the control profile is comprising at least one control parameter for the vehicle (EGO) and allowing the vehicle (EGO) to change its speed (v<ego>) from the initial speed (v<ego, 0>) to the target speed (v<ego, target>); - step (S16): adjusting the speed (v<ego>) of the vehicle (EGO) according to the control profile. A further method is disclosed for leading a vehicle (EGO) that is moving on a lane into a target position (d<ego, target>) with respect to at least one other vehicle (1, 2, 3, 4), wherein the method above is used to adjust the speed of the vehicle (EGO) to reach the target position (d<ego, target>). Further, a device, a system, a vehicle, a computer program product and a storage medium are disclosed.

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