IP Library Granted Patent US 12663340
Granted Patent B2
US 12663340 · App. 18/563,489 · Granted Jun 23, 2026

Test stand for the powertrain of a motor vehicle

Inventors: Christian Hell (Untergriesbach, DE); Thomas Dollinger (Passau, DE)
Assignee: ZF Friedrichshafen AG
G01M13/025G01L3/1457
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Quick Facts
Patent No.
US 12663340
App. No.
18/563,489
Granted
Jun 23, 2026
Kind
B2
Abstract

The invention relates to a test stand ( 100 ) for a powertrain of a motor vehicle ( 20 ). The test stand includes at least one loading motor ( 110 ) with a motor housing ( 111 ) and a motor shaft ( 112 ), at least one torque sensor ( 120 ), and at least one static module ( 130 ), wherein the motor shaft ( 112 ) is designed to be drivingly connected to a hub ( 21 ) of the motor vehicle ( 20 ) and wherein the torque sensor ( 120 ) is designed to detect a torque produced by the loading motor ( 110 ). The test stand ( 100 ) according to the invention is distinguished in that the at least one torque sensor ( 120 ) is arranged on the motor housing ( 111 ) in such manner that it blocks a rotation movement of the motor housing ( 111 ) relative to a substrate ( 119 ) and supports the torque via the motor housing ( 111 ) on the substrate ( 119 ).

Claims (44)

1 . A test stand for a powertrain of a motor vehicle having a hub, the test stand comprising:

at least one loading motor with a motor housing and a motor shaft;

at least one torque sensor; and

at least one static module;

wherein the motor shaft is configured to be drivingly connected to the hub of the motor vehicle;

wherein the torque sensor is configured to detect a torque delivered by the loading motor; and

wherein the at least one torque sensor is arranged on the motor housing in such manner that it blocks a rotation movement of the motor housing relative to a substrate and supports the torque via the motor housing on the substrate; and

wherein the motor vehicle comprises a strut, the at least one torque sensor is arranged in the strut, and wherein the strut is attached by way of a first joint eyelet to the motor housing and by way of a second joint eyelet to the substrate.

2 . The test stand according to claim 1 , wherein the at least one torque sensor includes a first torque sensor on a first lateral side of the motor housing and a second torque sensor on a second lateral side of the motor housing.

3 . The test stand according to claim 1 , wherein the motor shaft is configured to be connected rotationally fixed to the hub of the motor vehicle.

4 . The test stand according to claim 1 , comprising: a pneumatic tire fitted onto a radially outer circumference of the at least one static module.

5 . The test stand according to claim 1 , comprising: a rubber coating on a radially outer circumference of the at least one static module.

6 . The test stand according to claim 1 , wherein the at least one static module is configured to be connected to the substrate by friction or with interlock.

7 . The test stand according to claim 1 , wherein the at least one loading motor is in the form of a permanently excited synchronous motor.

8 . The test stand according to claim 1 , wherein the test stand also comprises a supporting ram, the supporting ram configured to be adjusted in three spatial directions and/or rotated about an axis, and wherein the supporting ram is configured to support the static module in place of the substrate.

9 . The test stand according to claim 1 , wherein the motor vehicle includes one or more drivable wheels, the test stand further comprising: a loading motor, a torque sensor, and a static module for each of the one or more drivable wheels of the motor vehicle.

10 . The test stand according to claim 1 ,

wherein the at least one static module comprises a radially outer portion and a radially middle portion;

wherein the middle portion is held rotatably in the outer portion; and

wherein the middle portion is configured to be connected rotationally fixed to an axial end of the motor housing.

11 . The test stand according to claim 10 , the middle portion of the static module is configured to be rotationally blocked relative to the outer portion.

12 . A test stand for a powertrain of a motor vehicle having a hub, the test stand comprising:

at least one loading motor with a motor housing and a motor shaft;

at least one torque sensor; and

at least one static module;

wherein the motor shaft is configured to be drivingly connected to the hub of the motor vehicle;

wherein the torque sensor is configured to detect a torque delivered by the loading motor;

wherein the at least one torque sensor is arranged on the motor housing in such manner that it blocks a rotation movement of the motor housing relative to a substrate and supports the torque via the motor housing on the substrate; and

wherein the at least one torque sensor includes a first torque sensor on a first lateral side of the motor housing and a second torque sensor on a second lateral side of the motor housing.

13 . The test stand according to claim 12 , wherein the motor shaft is configured to be connected rotationally fixed to the hub of the motor vehicle.

14 . The test stand according to claim 12 , wherein the at least one loading motor is in the form of a permanently excited synchronous motor.

15 . The test stand according to claim 12 , wherein the motor vehicle includes one or more drivable wheels, the test stand further comprising: a loading motor, a torque sensor, and a static module for each of the one or more drivable wheels of the motor vehicle.

16 . A test stand for a powertrain of a motor vehicle having a hub, the test stand comprising:

at least one loading motor with a motor housing and a motor shaft;

at least one torque sensor; and

at least one static module;

rubber on a radially outer circumference of the at least one static module;

wherein the motor shaft is configured to be drivingly connected to the hub of the motor vehicle;

wherein the torque sensor is configured to detect a torque delivered by the loading motor; and

wherein the at least one torque sensor is arranged on the motor housing in such manner that it blocks a rotation movement of the motor housing relative to a substrate and supports the torque via the motor housing on the substrate.

17 . The test stand according to claim 16 , wherein the rubber is part of a pneumatic tire.

18 . The test stand according to claim 16 , wherein the at least one loading motor is an electric motor.

19 . The test stand according to claim 16 , wherein the motor vehicle includes one or more drivable wheels, and wherein the test stand comprises a loading motor, a torque sensor, and a static module for each of the one or more drivable wheels of the motor vehicle.

20 . The test stand according to claim 16 , wherein the motor vehicle comprises a strut, the at least one torque sensor is arranged in the strut, and wherein the strut is attached by way of a first joint eyelet to the motor housing and by way of a second joint eyelet to the substrate.