EV Powertrain Virtual Effects for ICE-Like Shift Feel
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Solution Overview
Problem
Electric vehicles lack the ability to simulate the driving sensations and emotions provided by internal combustion engine vehicles, such as vibrations and sounds, which can make the driving experience feel less exciting and less engaging for drivers seeking a fun and dynamic experience.
Innovation Solution
A method and apparatus that utilize real-time vehicle driving information to generate virtual vibrations and sounds linked to the tooth surface pressures of powertrain gears, mimicking the characteristics of an internal combustion engine vehicle, by controlling a virtual effect generation device to produce realistic virtual effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electric vehicles use a motor with a reducer instead of an internal combustion engine with multi-speed transmission, then the vehicle achieves smooth operation without gear shifting interruptions, but the driver loses the exciting driving sensations and vibrations characteristic of ICE vehicles
Solution Approach 1:
The patent generates virtual vibrations and sounds that copy the characteristics of internal combustion engine vehicles. The controller creates artificial vibration signals that mimic the rhythmic vibrations produced by ICE engines during operation, allowing EV drivers to experience similar sensory feedback without actual mechanical engines or complex transmissions.
Solution Approach 2:
The patent replaces the mechanical vibration source (ICE engine) with an electronic control system that generates virtual vibrations through the powertrain apparatus. Instead of relying on mechanical combustion and moving parts to produce vibrations, the system uses electronic control to create equivalent sensory effects through the existing motor and reducer components.
2Device complexity
If electric vehicles remove the starting mechanism (torque converter or clutch) due to motor characteristics, then the powertrain apparatus becomes simpler, but the vehicle loses the ability to provide rough and trembling sensations desired for fun driving experiences
Solution Approach 1:
The patent copies the vibration characteristics of vehicles with torque converters or clutches by generating virtual vibration signals that replicate the rough and trembling sensations these starting mechanisms produce during operation. The controller creates artificial vibrations that mimic the mechanical effects of traditional starting mechanisms, preserving the emotional driving experience without requiring the actual mechanical components.
3Object-affected harmful factors
If electric vehicles eliminate the internal combustion engine as the vibration source, then ride comfort is improved due to absence of engine vibrations, but drivers seeking exciting experiences feel bored due to lack of vibrations
Solution Approach 1:
The patent copies the desirable vibration characteristics of ICE vehicles by generating virtual vibration signals that replicate the sensory experience of engine vibrations. The system creates artificial vibrations that mimic the rhythmic patterns and intensity levels of traditional engine operations, allowing drivers to experience exciting sensations without the actual mechanical vibrations that cause discomfort.
Solution Approach 2:
The patent applies vibrations selectively to provide different driving experiences. The controller can generate vibrations with specific characteristics tailored to different driving conditions and driver preferences, creating localized sensory effects that enhance excitement without uniformly applying vibrations that would cause overall discomfort during normal operation.
Data Source
AI summary
A method of virtualizing characteristics of an internal combustion engine vehicle in an electric vehicle, includes obtaining, by a controller, real-time vehicle driving information, determining, by the controller, tooth surface pressures of gears in the powertrain between a motor for driving a vehicle and driving wheels based on the obtained real-time vehicle driving information, generating, by the controller, a virtual effect signal for generating a virtual effect that simulates powertrain characteristics of an internal combustion engine vehicle based on the determined tooth surface pressures of the gears in the powertrain, and generating, by the controller, a virtual effect that simulates powertrain characteristics of an internal combustion engine vehicle by controlling an operation of a virtual effect generation device that generates a virtual effect according to the generated virtual effect signal.