Hub-Coupled Powertrain Test Stand With Housing-Mounted Torque Sensing
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Solution Overview
Problem
Existing vehicle test benches require a large setup area and depend on complex, expensive mechanical support structures, especially when testing a powertrain already installed in a vehicle.
Innovation Solution
A compact test bench design featuring load motors directly connected to the vehicle's hub, with torque sensors arranged on the motor housing to block rotational movement and support torque, allowing the vehicle to remain stationary during testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mechanical support structures are used to hold and align the vehicle and load machines, then the vehicle can be tested, but the setup area becomes large and the structure becomes complex and expensive
Solution Approach 1:
The patent extracts the vehicle from the traditional mechanical support structure and holds it stationary using its own wheels on the ground. The load machine is extracted from the complex alignment system and positioned directly adjacent to the vehicle hub, eliminating the need for elaborate frame structures to maintain relative positions.
Solution Approach 2:
The vehicle serves itself by using its own wheels and chassis to remain stationary during testing. The load machine is positioned directly at the hub without requiring external alignment mechanisms, allowing the vehicle to maintain its position naturally while enabling direct torque application.
2Stability of the object's composition
If the vehicle is held completely by the frame structure, then alignment is maintained, but the vehicle wheels do not have contact with the ground and the setup area becomes large
Solution Approach 1:
The patent extracts the alignment function from the large frame structure and relocates it to the direct mechanical connection between the load machine and vehicle hub. The vehicle remains on its wheels with natural ground contact, eliminating the need for extensive alignment infrastructure while maintaining testing stability.
3Area of stationary object
If load machines are connected directly to vehicle hubs, then the test bench becomes compact, but the torque sensor arrangement becomes critical for blocking rotational movement
Solution Approach 1:
The torque sensor acts as an intermediary element between the load machine and vehicle hub, providing both torque measurement and rotational constraint. This single component enables the compact direct connection while maintaining the necessary functional requirements for stationary vehicle testing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design minimizes space requirements, reduces costs, and maintains the vehicle's chassis characteristics, enabling realistic testing of suspension and steering behavior without complex alignment.
Implementation Method 1
at least one torque sensor (120), wherein the torque sensor (120) is configured to detect a torque generated by the load motor (110)
Implementation Method 2
the at least one torque sensor (120) is arranged on the motor housing (111) in such a way that it rotationally blocks a rotational movement of the motor housing (111) relative to a surface
Implementation Method 3
supports the torque against the surface via the motor housing (111)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a test stand (100) for the powertrain of a motor vehicle (20), comprising 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 placement module (130), wherein the motor shaft (112) is designed to be drivingly connected to a hub (21) of the motor vehicle (20), and the torque sensor (120) is designed to detect a torque generated by the loading motor (110). The test stand (100) according to the invention is characterized in that the at least one torque sensor (120) is arranged on the motor housing (111) such that the torque sensor blocks a rotational movement of the motor housing (111) relative to an underlying surface (119) and supports the torque via the motor housing (111) on the underlying surface (119).