Vehicle drive train with a parking lock
AssigneeAudi AG
InventorLukas HEIL
Life of this patent
Estimating the term…
Abstract
A vehicle drive train with an electric machine (EM), which outputs power to at least one vehicle wheel, may be configured with a parking lock (PS)having a parking lock gear arranged torque-transmittingly on an output shaft of the vehicle drive train, and a locking pawl which, in a locking position, is in toothed engagement with a tooth gap among tooth gaps of the parking lock gear. The electric machine (EM) may be assigned a test unit, by which, in a training routine, a gap detection (ΔtL) can be carried out, such that the test unit determines a rotor rotation angle position gap (αL) of the electric machine rotor corresponding to the tooth gap.
Claims13
A vehicle drive train, comprising:
- an electric machine configured with a rotor and an output shaft to output power to at least one vehicle wheel;
- a parking lock having a parking lock gear and a pawl, the parking lock gear arranged torque-transmittingly on the output shaft of the vehicle drive train, and the pawl in a locking position being in toothed engagement with a tooth gap among tooth gaps of the parking lock gear;
- and
- a test unit configured to be assigned to the electric machine to carry out a training routine by which detection of a gap (ΔtL) determines a rotor rotation angle position gap (αL) of the rotor of the electric machine corresponding to the tooth gap, and store the rotor rotation angle position gap (αL) in a database of the test unit.
Dependencies are inferred from the claim text.