Virtual After-Burn Control for EV Sound, Vibration, and Backfire Effects
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Solution Overview
Problem
Electric vehicles lack the after-burn sound and backfire phenomenon typically experienced in high-performance internal combustion engine vehicles, which are emotionally significant for enhancing the driving experience.
Innovation Solution
An apparatus and method to simulate an after-burn effect in electric vehicles by reproducing an after-burn sound, generating vehicle vibration, and visualizing backfire through a speaker, motor, and light emitting apparatus, using a virtual internal combustion engine model based on actual vehicle driving conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electric vehicle uses motor-driven power system, then torque precision and smoothness are improved, but dynamic driving sensation and emotional experience are worsened
Solution Approach 1:
The patent applies the copying principle by creating virtual copies of internal combustion engine effects. A sound generation device reproduces after-burn sounds, a vibration generation device simulates engine vibrations, and a light generation device mimics exhaust flame visuals. These virtual copies provide the emotional driving experience of traditional engines while maintaining the precision and smoothness of electric motor torque delivery.
2Loss of energy
If electric vehicle operates quietly, then energy efficiency is improved, but driver excitement and thrill are worsened
Solution Approach 1:
The patent applies periodic action by generating after-burn sounds, vibrations, and light effects in specific periodic patterns during deceleration phases. The controller activates these virtual after-burn effects when the vehicle slows down, creating intermittent bursts of excitement rather than continuous noise. This allows the vehicle to maintain quiet operation during normal driving while providing thrilling experiences during specific driving maneuvers.
Data Source
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AI summary
Apparatus and method of producing a virtual after-burn effect using a controller in an electric vehicle, may include receiving, by the controller, vehicle driving information during vehicle driving, determining, by the controller, virtual variable information in an internal combustion engine on the basis of the input vehicle driving information, determining, by the controller, a virtual after-burn effect characteristic on the basis of the virtual variable information in an internal combustion engine, outputting, by the controller, a control signal for producing the virtual after-burn effect on the basis of the virtual after-born effect characteristic information, and controlling, by the controller, an operation of an effect-production apparatus configured for producing the virtual after-burn effect on the basis of the control signal.