A method for securing a vehicle, whose wheels of one axle are on a dynamometer, against being unintentionally pushed out of the dynamometer during an inspection of the parking brake. In order to avoid endangerment of people who are in the surroundings of the vehicle, it is proposed to ascertain with the aid of a sensor system whether the vehicle is located on a dynamometer and, if this has been determined, to automatically generate a braking torque at a wheel brake of at least one wheel, which is located outside the dynamometer, after a control element of the parking brake has been operated.

A transmission actuator unit (131) configured by combination of a selecting actuator (133) and a shifting actuator (134) is mounted on an upper surface of a connection box unit (101). A connection box frame (102) is slidably supported along guide rails (20) between a pair of main beams (15a) of a slanting frame (11). By sliding the connection box unit (101), it is possible to adjust a height position of the transmission actuator unit (131) to a height position of a shift lever.

A device and method for centering a vehicle in a test stand having at least two pairs of rollers for supporting at least one of the front wheels and the rear wheels of the vehicle, and a measurement system. A controller is connected to the steering system of the vehicle, with which the steering angle of at least one of the front wheels and the rear wheels can be changed in accordance with data of the measurement system.

A method and apparatus for measuring the propulsive power required to overcome drag forces on a vehicle mounted within a wind tunnel. The apparatus includes a running belt platform driven by a dynamometer and supporting the vehicle placed inside a wind tunnel and controlled by a closed-loop servo control system, which maintains the vehicle centered on the running belt under varying operating speeds and headwind conditions. The power dissipated in drag is measured as the power transferred through ground contact with the wheels of the vehicle.

A method for reproducing an error that occurs during the driving operation of a vehicle is provided. The vehicle is fixed in position in order to prevent movement relative to a reference surface on which the vehicle is located. A speed profile provided by an engine analyzer is read into a control device of the vehicle and is converted by the control device into a load profile. Subsequently, with the brake activated, the control device in the vehicle automatically runs through the speed profile, the device having converted the speed profile into at least one control parameter of the engine and/or the transmission over time in order to simulate the load profile, when the vehicle is under load as a result of the activation of the brake.

A duct body (101) of a blowing device provided in a chassis dynamometer includes a bottom wall (31), a top wall (32) and a pair of side walls (33) that form a flow passage having a rectangular cross section. In each of the side wall (33), a vertically elongated window part (42) is formed for enabling the passage of vehicle restraint member such as a chain (5). Each window part (42) is closed through the tiled arrangement of a few cover plates (53, 54), and a chain plate set (100). The chain plate set (100) is formed through the sandwiching of an elastic sheet member (61, 62) having a restraint member through hole (63) and a slit (64) between an inner plate (51) and an outer plate (52) each having an opening part (57, 58).

A tire inspection device includes a gas sensor disposed outside of a tire and facing an outer surface of the tire. The gas sensor detects a gas that fills the tire.

A chassis dynamometer that tests a two-wheel drive vehicle includes: a driving wheel side roller on which the driving wheels of the vehicle are placed; a driven wheel side roller on which the driven wheels of the vehicle are placed; a driving wheel side power absorbing part connected to the driving wheel side roller; a driven wheel side power absorbing part connected to the driven wheel side roller; a braking force measuring part that, via the driven wheel side power absorbing part, measures braking force exerted on the driven wheel side roller; and a control part that with use of the braking force measured by the braking force measuring part, sets the control target value of the power absorbing force of the driving wheel side power absorbing part to control the driving wheel side power absorbing part.

Disclosed in this invention is a flat-belt type VTEHIL test bench for commercial vehicles, including a main bench body and a bench test system. The main bench body is mounted inside a foundation and includes a main bench frame, a bench cover, front axle flat-belt assemblies and rear axle flat-belt assemblies. Each front axle flat-belt assembly is provided therein with a fixed plate, a rotary disc and a limiting mechanism. Each rear axle flat-belt assembly includes a flat belt and flat belt pulleys disposed both within the flat belt at opposing ends thereof. The foundation defines a sector-shaped mounting depression in which the main bench body is mounted, and an iron floor is arranged under the main bench body. This invention can better simulate actual driving surfaces and accommodate two-axle, three-axle, four-axle and other types of trucks or tractors. The test bench is able to test unmanned driving capabilities of intelligent commercial vehicles by allowing them to take lane changing, turning, braking and other driving actions in simulated setups and providing them with various traffic scenarios created with simulated traffic participants.

The present invention relates to a power assembly for a robotic platform for a Global Vehicle Target (GVT) of autonomous driving. The power assembly includes an assembly housing, a motor, a transmission mechanism, a standby brake, a suspension and wheels, where when the power assembly is in use, a driving force output by the motor is transmitted to the wheels by means of the transmission mechanism, so as to drive the wheels to rotate, the standby brake is used for braking an output shaft of the motor, a top of the suspension supports the assembly housing, and when a load borne by the assembly housing changes, the suspension contracts or extends to drive the wheels to rotate upwards and downwards with a housing of the transmission mechanism as a swing arm and a rotating shaft of the motor as a swing arm rotation center.