Abstract: A housing for a motor or compressor has an elongate crankcase with two end surfaces. At least one cylinder chamber is provided in which a piston is caused to perform a movement by rotation of the crankshaft. The internal diameter of the crankcase narrows monotonously from the first end surface to the second end surface. A crankcase shaped in this way can be manufactured particularly easily by virtue of the casting being performed around a shaping mandrel. A shaping mandrel of this type must likewise narrow monotonously in order that, after the casting has been performed around it, the shaping mandrel can be pulled out of the housing at a first end. By way of the shaping of the crankcase, it is possible for the housing to be of unipartite and at the same time very compact construction.
Abstract: A utility vehicle disk brake includes a vehicle-mounted brake carrier that partially surrounds a brake disk, and a brake caliper that is arranged on and partially covers the brake carrier. Sliding guides allow the brake caliper to slide relative to the brake carrier perpendicularly to a friction surface of the brake disk. A first one of the sliding guides is designed as a fixed bearing, and a second one of the sliding guides is designed as a floating bearing. At least the floating bearing is designed as a slotted guide having a guideway that runs in the sliding direction of the brake caliper as well as a first guiding element that is accommodated in the guideway.
Abstract: A disk brake with lower cost and improved maintainability is provided. The brake caliper includes at least one actuating device for actuating the disc brake using a moveably guided bridge. The bridge has at least one threaded hole into which an actuating spindle is displaceably located. A brake disk end of the actuating spindle penetrates a caliper closing plate facing the brake disk. The positioning spindle carries a rotatably-mounted pressure piece which presses a brake pad against the brake disc. The opening is sealed by a bellows retained on the brake caliper on one side and on the pressure piece on the other side. A securing ring non-rotatably located on the actuating spindle and rotatably connected to the thrust piece interacts with the bellows during brake application and/or release to maintain a desired air gap between the brake disk and brake pad.
Abstract: A screw compressor for a utility vehicle has a rotor housing, in which screw rotors of the screw compressor are arranged, a housing cover, and an air outlet pipe arranged on an output side of the housing cover and having a riser. The air outlet pipe has at least one oil separator.
Abstract: A disc brake, having a brake caliper which engages over a brake disc, is held on a stationary brake carrier such that it can be displaced axially in relation to the brake disc, and in which brake pads are positioned which, during a braking operation, can be pressed against the brake disc by a brake application device. A device for visual wear detection of brake disc wear and/or brake lining wear is provided, and is configured in such that, for wear detection, a comparison element which extends in the displacement direction of the brake caliper and in an opposed manner with respect to the brake disc is fastened to the brake carrier. The comparison element is of strip-shaped configuration, with continuously planar side surfaces, and has at least one step on the edge side in the displacement direction of the brake caliper.
Abstract: A relay valve is provided for a vehicle. The valve includes a parking brake piston that is displaceable in a housing and an axially displaceable cuff, a first compressed-air chamber for receiving compressed air from a control line is formed between the parking brake piston and the housing. The valve is also provided with a first spring element, which axially applies a pre-loading force to the cuff, and with a second spring element, which axially applies another pre-loading force to the parking brake piston. An axially displaceable service brake piston is arranged axially between the parking brake piston and the cuff, the service brake piston rests at least radially against the parking brake piston and radially against the housing in a sealing manner, in order to form a second compressed-air chamber.
Abstract: A tire pressure controlling device for a tire of a vehicle wheel filled with compressed air, includes a control valve unit for filling the tire with compressed air and/or venting compressed air therefrom. The control valve unit is supplied from a compressor for generating the tire filling pressure. The compressor for compressing air drawn in from the atmosphere is driven by the mechanical rotary movement of the vehicle wheel, as a transmission disposed therebetween transmits the rotary driving movement of the vehicle wheel to the drive shaft of the compressor unit.
Abstract: A device is provided for predicting the remaining lifetime of a component in a compressed air supply system for a vehicle. This device includes a memory unit for a value related to the degradation of the component, at least one first input for a usage quantity which is a measure for the operating time and/or number of operating cycles of the component and/or for the amount of compressed air delivered by the compressed air supply system, at least one second input for at least one state variable which is a measure for at least one vehicle and/or air supply operation condition or environmental condition. It also includes an evaluation unit that is configured to combine the usage quantity and the state variable into a lifetime decrement value that is a measure for the degradation of the component caused by the usage according to the usage quantity, and update the value in the memory unit according to this lifetime decrement value.
Abstract: A method for controlling a pneumatic or electro-pneumatic service brake device of a vehicle is provided. In the method a driver brake request occurs by actuating a service brake actuating element of a service brake valve device of the braking device. In response to actuating the service brake actuating element, at least one control piston of the service brake valve device is loaded with a first actuating force in order to generate a pneumatic brake pressure or brake control pressure in at least one pneumatic service brake circuit of the service brake device. The control piston directly or indirectly controls at least one double-seat valve of the service brake valve device. The at least one double-seat valve includes an inlet seat and an outlet seat. The at least one control piston of the service brake valve device in addition is loaded by a second actuation force additionally or instead of the first actuation force.
Abstract: A sensor device is provided for detecting a shifting position of a vehicle transmission. The vehicle transmission includes a transmission chamber, in which transmission elements are arranged. The sensor device includes a bar element, which extends from the transmission chamber into a secondary chamber sealed off from the transmission chamber and is arranged such that the bar element can be moved in dependence on the shifting position. The bar element has an interface arranged in the transmission chamber for coupling the bar element to a transmission element positioned in dependence on the shifting position and an accommodating segment arranged in the secondary chamber. The sensor device also has a transducer element, which is attached to the accommodating segment of the bar element. The sensor device also has a detecting device for detecting a position of the transducer element depending on the shifting position or a motion of the transducer element depending on a change in the shifting position.
Abstract: A method and computer program for electronically regulating the brake force distribution in a pressure medium-operated brake system of a vehicle having at least one front axle brake circuit, associated with a front axle, and at least one rear axle brake circuit, associated with at least one rear axle, in which when the brake system is operated, a rear axle brake pressure, acting in the at least one rear axle brake circuit, is regulated to prevent locking of the rear wheels before locking of the front wheels, and in which the brake pressure at the rear axle is limited only while a pressure value which acts in the rear axle brake circuit is below a prespecified pressure threshold value, but the brake pressure at the rear axle is not limited if the pressure value acting in the rear axle brake circuit is not less than the prespecified pressure threshold value.
Abstract: A disc brake for a commercial vehicle has a brake caliper spanning a brake disc on the vehicle side, in which brake caliper a clamping device is arranged which has a pivotable brake lever engaging in at least one bridge carrying a brake plunger, which at the same time is directly or indirectly supported at the inner side of a wall of the brake caliper. The contact area of the bridge at the brake lever or of the brake lever at the brake caliper is configured as a pivot bearing having a bearing shell cross-sectionally configured as an arc forming a part of the pivot bearing. The bearing shell is placed in a seating. The disc brake is configured such that the bearing shell is located in the pivoting direction of the brake lever with its opposite longitudinal borders at stop edges, which longitudinally limit the trough-shaped seating.
Abstract: A device for controlling an actuator/solenoid valve output stage, for a vehicle, including: a terminal to receive an enable signal via an interface to an application unit, the enable signal assuming enable/disable states to enable/disable output stage control; a first suppression terminal to receive a first suppression signal via a monitoring unit interface, the first suppression signal assuming a first authorization/suppression state for authorizing/suppressing output stage control; a second suppression terminal to receive a second suppression signal via a second monitoring unit interface, the second suppression signal assuming a second authorization/suppression state for authorizing/suppressing output stage control; an output terminal as an interface to the output stage; and a linking unit to provide a control signal for controlling the output stage to the output terminal for the enable signal, and the first/second suppression signal has the first/second authorization state.
Abstract: A vehicle pressure medium device in which a pressure medium flows, has a multilayer design which has at least two mutually contacting layers. A groove-shaped recess is arranged between a first chamber into which a first flow opening opens and a second chamber into which a second flow opening opens when viewed on a plane parallel to the layers. The groove-shaped recess has at least one opening for a fluidic connection between the first chamber and the second chamber on a plane parallel to the layers. A group of molded seals is provided for mounting between the two layers. A fluidic connection is either produced between the first chamber and the second chamber or not depending on the molded seals which are mounted between the two layers and each of which is selected from the group of molded seals.
Abstract: An electronic circuit arrangement, by which a line termination or terminating resistor of a serial bus, for example a CAN bus, is implemented in a switchable manner and can be electronically connected or disconnected by electronically operating switching elements and a microcontroller, or a computer port of the latter, which is present in an electronic control unit.
Abstract: A disc brake, preferably pneumatically actuated, in particular for a motor vehicle, including a brake disc with a brake disc axis, a brake caliper, in particular a sliding caliper, with a brake application section and a caliper back which are connected via tension struts, and at least two brake pads with in each case one brake pad carrier. Of the brake pads, an application-side brake pad is assigned to the brake application section and a back-side brake pad is assigned to the caliper back. The brake pad carrier of the back-side brake pad and the caliper back of the brake caliper are in contact via at least one pair of contact surfaces. One contact surface of the at least one pair of contact surfaces is an end surface of a projection, and the other contact surface of the at least one pair of contact surfaces is a bottom surface of a recess.
Abstract: A disc brake, preferably a compressed air-actuated disc brake, in particular for a motor vehicle, has a brake application mechanism with a brake rotary lever, at least one spindle unit having a threaded rod screwed into a bridge, and a brake caliper. The caliper frames an edge region of a brake disc. The brake caliper has a brake application portion and a caliper back which are connected together via tie bars. The brake application mechanism with the brake rotary lever is received in the brake application portion of the brake caliper from an application face side of the brake disc. The brake application portion of the brake caliper has a first region, in which the application mechanism and a force transmission portion of the brake rotary lever are arranged, a second region, which is formed as a lever housing, and a lever portion for the brake rotary lever.
Abstract: A disc brake for a commercial vehicle includes a caliper that straddles a brake disc and is retained on a stationary brake carrier in such a way as to be axially movable in relation to the brake disc on two guide bars connected to the brake carrier. The guide bars are each guided in a sliding bearing that is non-movably retained in a bore of the caliper. The disc brake is designed such that at least one of the sliding bearings is made up of at least two metal sleeves, which rest against the guide bar and are located at a distance from one another in the axial direction, and at least one spacing sleeve located there between.
Abstract: A brake system for a vehicle includes a first brake device for braking a first wheel of the vehicle, a second brake device for braking a second wheel of the vehicle, a first brake pedal which is paired with the first wheel, a second brake pedal which is paired with the second wheel, a brake control valve which is designed to act on the first brake device and/or the second brake device, a first control valve for controlling a brake pressure in the first brake device, and a second control valve for controlling a brake pressure in the second brake device. The brake system further has an electromechanical switching module in order to block or at least reduce a braking effect of the second brake device while the first brake pedal is being actuated, and the switching module is designed to block or at least reduce a braking effect of the first brake device while the second brake pedal is being actuated.
Abstract: An electric parking brake, in particular for a commercial vehicle, has at least two compressed-air outputs, an electrically controllable valve arrangement for controlling a distribution of compressed air to the compressed-air outputs and including a bistable valve, and a compressed-air input which can be connected to a compressed-air supply for supplying compressed air from a compressor and/or from a compressed-air reservoir to the valve arrangement and to the compressed-air outputs. The electronic parking brake has as small a number of switchable valves as possible and reliably supplies compressed air to the compressed-air outputs. The bistable valve is supplied with compressed air at the input end by the compressed-air supply at least during a de-energized state of the valve arrangement. The compressed air is at a pressure which is made available by the compressor and/or the compressed-air reservoir.