Vehicle Component Testing via Virtual Chassis Simulation
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Solution Overview
Problem
The existing vehicle testing methods often require repeated testing and adjustments due to discrepancies between engine dynamometer and chassis dynamometer results, hindering the speedy development and synchronization of vehicle components.
Innovation Solution
A vehicle testing system that includes an actuator control unit, operating conditions calculating unit, and component testing device, allowing for the simulation of operating conditions to test vehicle components under similar conditions to actual vehicle tests, minimizing the need for repeated testing and facilitating faster development and correction of malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate engine dynamometer and chassis dynamometer testing are conducted, then component-level and vehicle-level performance can be measured, but repeated testing and adjustments are required due to result discrepancies
Solution Approach 1:
The patent creates a virtual copy of the chassis dynamometer testing environment through software simulation. The virtual chassis dynamometer replicates the mechanical running test conditions, allowing engine component testing to be performed under identical virtual conditions as the complete vehicle testing, thereby eliminating discrepancies between separate tests and reducing repeated adjustments
Solution Approach 2:
The patent merges the engine dynamometer testing and chassis dynamometer testing into a unified virtual testing environment. By combining the engine control unit, virtual chassis dynamometer, and simulation software into an integrated system, the patent enables simultaneous optimization of both component-level and vehicle-level performance without requiring separate testing iterations
2Reliability
If the complete vehicle is tested on a chassis dynamometer, then overall vehicle performance is measured, but the development of individual components such as the engine is delayed due to synchronization issues
Solution Approach 1:
The patent segments the vehicle testing system into independent virtual components including the engine control unit, virtual chassis dynamometer, and simulation software. This segmentation allows individual components like the engine to be tested and optimized separately in the virtual environment while maintaining their integration with the complete vehicle system, thereby accelerating component development without compromising overall vehicle performance
Solution Approach 2:
The patent performs preliminary virtual testing of individual components before physical vehicle assembly. By conducting engine dynamometer testing in the virtual chassis dynamometer environment beforehand, potential performance issues are identified and resolved in advance, preventing delays during subsequent complete vehicle testing and acceleration
Data Source
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AI summary
A vehicle testing system includes: an actuator for operating a vehicle or a part of a vehicle in a predetermined algorithm; an operating conditions calculating unit that calculates operating conditions being applied to a component of the vehicle or a component of the part of the vehicle during the operation of the vehicle or the part of the vehicle by the actuator; and a component testing device that connects to the component, in which the component testing device operates and applies to the component the operating conditions calculated by the operating conditions calculating unit.