b. Via a connection element 13, one end of the support element 7 may be connected to a wheel 22 of a test object 4. Furthermore, a support device 8 may be provided, which may be connected to the support element 7 in such a way that a change in a rotational orientation of the support element 7 can cause a lifting or lowering movement of the support device 8.
Wind tunnel test stand for motor vehicles convertible into multiple configurations including a one-belt, three-belt and/or five-belt configuration. The wind tunnel test stand includes force sensors for sensing forces between a weighing platform and a test stand frame, a belt unit with a conveyor belt, and a carriage accommodating at least one belt unit, where the carriage is supported relatively movably with respect to the test stand frame in X- and Y-directions.
The device and the corresponding method according to the invention relate in particular to a holding device for a wind tunnel test stand 1, in particular for a wind tunnel balance. The device can comprise a holding base 5a, 6a, which can be arranged outside of a treadmill 3 of the wind tunnel test stand 1, and a support element 7 with at least two ends 7a, 7b. One end of the support element 7 can be connected to a wheel 22 of a test object 4 via a connection element 13. Furthermore, a support device 8 is provided which can be connected to the support element 7 such that a change of a rotational orientation of the support element 7 can cause a lifting or lowering movement of the support device 8.
The present invention relates to a device which is a wind tunnel test stand, in particular a multiple configuration wind tunnel test stand, which can be converted with a lower level of complexity into at least a single band, three-band and/or five band configuration, thereby ensuring increased measurement accuracy.
The invention relates to an exhaust gas measuring system for measuring combustion exhaust gases, in particular of motor vehicles (1), by means of a dilution air system, in which the exhaust gas is mixed with diluted air (10) for lowering the dew point, wherein a heat exchanger (9) is provided, which supplies waste heat of the gas mixture flowing downstream of a gas conveying means (8) to the dilution air (10) for preheating.
The invention relates to a method for manufacturing road surface covering elements that can be mounted on rollers of chassis dynamometers, including detection of a surface contour of a road surface covering within an essentially strip-shaped section. The method also includes production of a digital image of the detected section and manufacturing of the road surface covering element according to the digital image by means of a three-dimensional manufacturing technique.
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
B23Q 17/24 - Arrangements for indicating or measuring on machine tools using optics
B23Q 35/00 - Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
C04B 35/622 - Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/386 - Data acquisition or data processing for additive manufacturing
B33Y 50/00 - Data acquisition or data processing for additive manufacturing
The invention relates to a wind tunnel balance, having at least one belt unit that has at least one belt unit frame equipped with at least one conveyor belt that is wound around at least two rollers. The wind tunnel balance also has at least one fastening device that is suitable for fastening a vehicle to the conveyor belt in a predetermined position, a frame, and a platform that is supported so that it is able to move relative to the frame; force measuring elements are provided between the platform and the frame and are able to detect forces between the frame and platform, and the fastening device is attached to the platform in stationary fashion. The invention permits a high-precision detection of aerodynamic forces in wind tunnel measurements or tests.
The invention relates to a belt unit in a wind tunnel balance for motor vehicles, in particular for determining forces and moments acting on a motor vehicle in a wind tunnel, wherein an area exposed to wind is minimized by means of a trapezoidal support, which is raised with respect to a normal zero position, and appropriately adapted test stand covers. The wind-exposed area of the endless belt of the belt test stand can be reduced here to a value which is only slightly above the necessary wheel contact area (tire shuffle). As a result, error forces can be reduced further, so that the result is highly increased measurement accuracy.
G01B 5/30 - Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
G01M 9/06 - Measuring arrangements specially adapted for aerodynamic testing
The invention relates to a method for manufacturing carriageway surface elements 5 which can be mounted on rollers of roller test rigs, comprising the detection of a surface contour of a carriageway surface within an essentially strip‑shaped section 1. In addition, comprising generating a digital image 3 of the detected section 1. Further comprising manufacturing the carriageway surface element 5 according to the digital image 3 by means of three‑dimensional manufacturing technology.
The invention relates to a wind tunnel balance having at least one belt unit 3 which has at least one belt unit frame 3a on which at least one running belt 3b is arranged, which running belt is looped around at least two rollers 3c. The wind tunnel balance also comprises at least one fastening device 6 which is suitable for holding a vehicle 9 in a predetermined position on the running belt 3b, a frame 4 and a platform 1 which is movably mounted relative to the frame 4, wherein force measuring means 2 are arranged between the platform 1 and the frame 4 and can be used to record forces between the frame 4 and the platform 1, and the fastening device 6 is permanently arranged on the platform 1. The invention allows highly accurate recording of aerodynamic forces in wind tunnel measurements and tests.
The invention relates to a belt unit in a wind tunnel balance for motor vehicles, in particular for determining forces and moments acting on a motor vehicle in a wind tunnel, wherein an area exposed to wind is minimized by means of a trapezoidal support, which is raised with respect to a normal zero position, and appropriately adapted test stand covers. The wind-exposed area of the endless belt of the belt test stand can be reduced here to a value which is only slightly above the necessary wheel contact area (tire shuffle). As a result, error forces can be reduced further, so that the result is highly increased measurement accuracy.
The invention relates to an actuating device for a robot driver that reduces the effort involved for setting or learning of the actuating means. In addition, the effort for determining the pedal force can be reduced. The actuating device comprises at least one actuating means 10, 20, 30, 300, 310, which has at least one control rod 25 comprising an actuator region 50 and a contact element, wherein the contact element can be caused to connect to a pedal and the control rod 25 in the actuator region 50 is a rotationally symmetrical component, which is slidably received in an actuator housing 60 in the actuator region 50. In the actuator region 50 the control rod 25 contains a first element 80, and the actuator housing 60 has a second element 70, which is provided in an outer circumferential region of the first element 80, wherein the first element 80 and the second element 70 form an electromagnetic force-generating means for moving the control rod 25.
The invention relates to a roller-type test stand for motor vehicles, comprising at least one roller (1, 1') for at least one wheel of a motor vehicle, a drive motor (2) for directly driving the roller (1, 1') and comprising a stator housing (3), and a support frame (4) in which the stator housing (3) is mounted in a pendulating manner, said stator housing (3) resting on the support frame (4) by measuring means (5). Said roller-type test stand is characterised in that the stator housing (3) is connected to the support frame (4) by means of at least two spring supports (6). Said spring supports (6) have at least one bending point (7) with a tapering (8).
patents
