Abstract: In order to make it possible to measure a brake dust amount and the like even when a main flow rate is fluctuated, a brake dust measurement device that measures brake dust generated from a brake includes: a main flow path through which a sample gas containing the brake dust flows; a sampling flow path that is connected to a sampling point set in the main flow path and collects a part of the sample gas; and a flow rate control mechanism that controls a sampling flow rate that is a flow rate in the sampling flow path such that the sampling flow rate coincides with a flow rate proportional to a main flow rate that is a flow rate in the main flow path.

Abstract: A test method includes deriving road grade information or wind load information from test schedule torque outputs generated by a dynamometer operatively arranged with a first vehicle, and controlling an accelerator pedal, an accelerator pedal signal, a fuel injector, a manifold pressure, a motor controller, or a throttle valve associated with the first or a second vehicle according to a speed schedule such that the dynamometer, or another dynamometer, programmed with the road grade information or wind load information and operatively arranged with the first or second vehicle applies a load to the first or second vehicle that reflects the road grade information or wind load information.

Abstract: The invention relates to a test bench (10) for testing a test specimen (14), comprising a load device for generating a load for the test specimen, a test specimen holder (16) for holding the test specimen and for introducing the load onto the test specimen, and a cooling gas inflow device (32) for cooling the test specimen by means of a cooling gas stream exiting an outlet opening (48) of the cooling gas inflow device. In this case, the cooling gas inflow device is designed such that the cooling gas flow inside the cooling gas inflow device is divided into at least two part cooling gas streams in at least one section of the cooling gas inflow device.

Abstract: A device for measuring a fuel flow in a test stand comprises a measuring module (10) for measuring a fuel flow guided through the measuring module (10) as well as a conditioning module (11) arranged downstream of the measuring module (10) for conditioning the fuel. Moreover, a verification module (19) is provided downstream of the measuring module (10) for checking the measuring precision of the measuring module (10). The fuel may be guided optionally to the conditioning module (11) or to the verification module (19). The verification module (19) is an integral part of the device may have an injector (26) as a dosing unit for extracting an exactly defined reference fuel quantity.

Abstract: A test bench for testing a brake comprises a pressure generating assembly for providing a brake fluid with an increased hydraulic pressure, a test bench control, and an electromechanical brake actuator. The pressure generating assembly is actuated mechanically and the brake fluid is supplied to the brake to actuate the brake. The electromechanical brake actuator, which simulates a vehicle driver's braking foot, is provided for mechanical actuation of the pressure generating assembly. The brake actuator comprises an electric motor activated by the test bench control and a planetary roller screw drive driven by the electric motor. The planetary roller screw drive is mechanically coupled to the pressure generating assembly to mechanically actuate the pressure generating assembly.

Abstract: A test stand encompasses a dynamometer, which is supported to oscillate about a main axis, from which a lever arm extends perpendicularly. For calibrating a force-measuring device, which is coupled to the lever arm, provision is made for a pneumatic cylinder as reference force-generating device. The reference force can be measured by a load cell and can be applied to the lever arm via a yoke. The force-measuring device, which is to be calibrated, the pneumatic cylinder, the load cell, and the yoke are disposed on the same side of the dynamometer and act on the same lever arm.

Abstract: A rotation test stand for a test specimen includes a load device for generating a load for the test specimen, a test specimen accommodation for accommodating the test specimen and for transmitting the load to the test specimen as well as a measuring device for measuring a measured variable acting on the test specimen. Provision is furthermore made at a suitable location for a vibration damping device for damping vibrations, which arise in the test stand. The vibration amplitudes are to be reduced, in particular, by a torsional vibration damper or a linear vibration damper. The vibration damper can be disposed in the drive train or at the measuring device.

Abstract: A device for measuring a fuel flow in a test stand comprises a measuring module (10) for measuring a fuel flow guided through the measuring module (10) as well as a conditioning module (11) arranged downstream of the measuring module (10) for conditioning the fuel. Moreover, a verification module (19) is provided downstream of the measuring module (10) for checking the measuring precision of the measuring module (10). The fuel may be guided optionally to the conditioning module (11) or to the verification module (19). The verification module (19) is an integral part of the device may have an injector (26) as a dosing unit for extracting an exactly defined reference fuel quantity.

Abstract: A test bench for testing a brake comprises a pressure generating assembly for providing a brake fluid with an increased hydraulic pressure, a test bench control, and an electromechanical brake actuator. The pressure generating assembly is actuated mechanically and the brake fluid is supplied to the brake to actuate the brake. The electromechanical brake actuator, which simulates a vehicle driver's braking foot, is provided for mechanical actuation of the pressure generating assembly. The brake actuator comprises an electric motor activated by the test bench control and a planetary roller screw drive driven by the electric motor. The planetary roller screw drive is mechanically coupled to the pressure generating assembly to mechanically actuate the pressure generating assembly.

Abstract: A test bench encompasses a load device and a blower device for cooling the load device. With the help of one or more temperature sensors, it is possible to identify the temperature in or on the load device and to adjust the speed of a blower motor of the blower device accordingly. For instance, provision is made for changing the blower speed in a predetermined range linearly with the temperature change in the load device. In the event that one of the temperature sensors determines that a predetermined limit value is exceeded, the blower is set to maximum speed. In response to the exceeding of a further, higher temperature limit value, the load device is turned off.