Wheel Acceleration Torque System for Chassis Simulation
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Solution Overview
Problem
Current wheel testing methods fail to simulate the acceleration torque experienced by wheels during actual road conditions, leading to inconsistencies between bench test results and real-world automobile tests.
Innovation Solution
A wheel acceleration torque system comprising a torque shaft driving motor, speed reducer, torque shaft, and an automatic connection and separation mechanism, which applies and separates acceleration torque to a transmission shaft, simulating the conditions of real road running by connecting with a wheel's transmission shaft through a gear mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bench tests are conducted without acceleration torque simulation, then test setup is simple and easy to operate, but test results do not reflect real road conditions accurately
Solution Approach 1:
The test system is divided into independent functional modules: rotary drum assembly for wheel rotation, torque shaft driving motor for acceleration torque application, speed reducer for torque amplification, and automatic connection and separation mechanism for engagement control. Each module can be independently designed, tested, and maintained, reducing overall system complexity while enabling comprehensive acceleration torque simulation
Solution Approach 2:
The test equipment transitions from static bench testing to dynamic acceleration torque simulation by introducing a torque shaft driving motor that applies variable torque to the wheel's transmission shaft. The system dynamically adjusts torque magnitude and direction to simulate real road conditions including acceleration, deceleration, and reverse scenarios, making test results more representative of actual vehicle performance
2Reliability
If acceleration torque is applied to simulate real road conditions, then test state closely matches real automobile test field, but requires complex automatic connection and separation mechanism
Solution Approach 1:
The automatic connection and separation mechanism uses the torque shaft driving motor itself to control the engagement and disengagement of the torque shaft with the transmission shaft. The motor's own driving force is utilized to push the gear ends together for connection and separate them for disconnection, eliminating the need for external actuating mechanisms and simplifying the overall control system
Solution Approach 2:
A cylinder acts as an intermediary component between the torque shaft driving motor and the gear transmission system. The cylinder converts the motor's rotational motion into linear pushing motion to engage the gear ends, providing a simple mechanical interface that automatically controls the connection and separation without complex control systems
3Reliability
If wheel testing includes acceleration torque, then longitudinal force changes are captured, but additional torque application mechanisms are required
Solution Approach 1:
The torque shaft driving motor serves multiple functions: it applies acceleration torque to the transmission shaft, provides speed control through the speed reducer, and enables both forward and reverse torque application. This single multi-functional component replaces what would otherwise require separate torque application mechanisms, reducing overall system complexity while comprehensively simulating longitudinal force variations
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 system effectively replicates the acceleration torque conditions of real road running, ensuring test results for the wheel and suspension system are consistent with actual automobile tests, thereby improving the accuracy and reliability of simulation road tests.
Implementation Method 1
the shaft end of the gear lower shaft is connected with a piston rod of the cylinder, and the cylinder can push the gear end of the gear lower shaft and the gear end of the gear upper shaft to be meshed by the gear and separated
Data Source
AI summary
The present disclosure belongs to the technical field of automobile chassis suspension system tests, and provides a wheel acceleration torque system and test equipment for an automobile chassis simulation road test. The automatic connection and separation mechanism is connected with a transmission shaft of a wheel; the automatic connection and separation mechanism can apply acceleration torque of the torque shaft to the transmission shaft, and can separate the acceleration torque applied to the transmission shaft; and the wheel acceleration torque system and the test equipment can adapt to the requirement for applying the acceleration torque in a test of a test bench, simulate to apply the acceleration torque which the wheel bears in the actual road running process, ensure that a test state of a tested wheel and suspension system is close to a test state of a real automobile test field.