Wheel-force dynamometer for measuring tire forces
AssigneeZF Friedrichshafen AG
InventorsJens Eisenbeiss, Roland Bösl
Life of this patent
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Abstract
A wheel-force dynamometer (1) for the measurement of forces and torques acting upon a vehicle tire (2a) and a vehicle wheel (2) using force sensors (4, 24, 44). The vehicle wheel (2) is mounted and able to rotate on a wheel axle. The wheel-force dynamometer (1) has a wheel axle that is in the form of a hollow shaft (9, 29, 49) which is hydrostatically mounted on a rigid, fixed in position bearing journal (3, 23, 43).
Claims16
A wheel-force dynamometer for measurement of force and torque acting upon a vehicle tire and a vehicle wheel by force sensors,
- the vehicle wheel being rotatably supported by a wheel axle,
- the wheel axle being in a form of a hollow shaft which is mounted on a rigid, positionally fixed bearing journal, and
- the bearing journal is a hollow journal, and a radial periphery of the hollow journal varies so that, in an axially central zone, either the hollow journal tapers in a manner of a cone or the hollow journal thickens in a manner of a cone.
A wheel-force dynamometer for measurement of force and torque acting upon a vehicle tire and a vehicle wheel by force sensors,
- the vehicle wheel being rotatably supported by a wheel axle,
- the wheel axle being in a form of a hollow shaft which is mounted on a rigid, positionally fixed bearing journal, and
- the hollow shaft is mounted relative to the bearing journal, by hydrostatic slide bearings.
A wheel-force dynamometer for measurement of force and torque acting upon a vehicle tire and a vehicle tire and a vehicle wheel,
- the wheel force dynamometer having sensors arranged between a positionally fixed supporting structure and a first axial end of a rigid, fixed bearing journal,
- the bearing journal being supported by the supporting structure,
- a wheel axle having a wheel end that is connected to the vehicle wheel and opposite to the supporting structure, the wheel axle being hollow and rotationally supported, via hydroststic slide bearings, on an outside surface of the bearing journal, the bearing journal being hollow and having an inside surface that is conically shaped such that an axial cross section of the bearing journal increases from a second xial end of the bearing journal toward the first axial end of the bearing journal.
Dependencies are inferred from the claim text.