Dual Motor ATV Drivetrain Kit for Zero-Radius Turning
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Solution Overview
Problem
Existing all-terrain vehicles (ATVs) face space constraints within their chassis, limiting their conversion into efficient hybrid or electric vehicles, and suffer from issues like wheel speed mismatch, slippage, noise, and wear on braking components.
Innovation Solution
A dual motor and split transmission drivetrain kit is introduced, featuring independent motor control for each wheel, adjustable gear ratios, and regenerative braking, allowing for efficient power transfer, reduced noise, and customizable performance, along with self-contained microcontrollers for seamless integration with existing vehicle systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single motor and transmission system is used in existing ATVs, then the chassis space is constrained and the system is simpler, but power transfer efficiency is reduced and wheel speed mismatch occurs
Solution Approach 1:
The patent divides the single drivetrain system into two independent drivetrains, with one motor and transmission unit for each rear wheel. This segmentation allows each wheel to be independently powered and controlled, eliminating wheel speed mismatch and improving power transfer efficiency while accommodating the ATV's chassis space constraints through modular design.
2Reliability
If standard braking systems are used, then the braking components wear quickly, but regenerative braking adds system complexity
Solution Approach 1:
The patent converts the kinetic energy that would normally be lost during braking into useful electrical energy through regenerative braking. The motors function as generators during deceleration, converting mechanical energy to electrical energy that charges the battery, thereby reducing wear on mechanical braking components while recovering energy that would otherwise be wasted.
3Adaptability or versatility
If fixed gear ratios are used, then the transmission system is simpler, but terrain adaptation capability is limited
Solution Approach 1:
The patent implements variable gear ratios in the transmission system, allowing the gear configuration to be dynamically adjusted based on terrain conditions and operational requirements. This enables the ATV to optimize its performance for different terrains by changing gear ratios, while the independent drivetrain configuration allows each wheel to adapt independently to varying surface conditions.
4Ease of operation
If independent motor control for each wheel is implemented, then zero-radius turning capability is achieved, but control system complexity increases
Solution Approach 1:
The patent applies independent motor control to each wheel, allowing each motor to operate with its own control parameters optimized for local conditions. This enables zero-radius turning by differential motor control and independent wheel speed adjustment, while the modular architecture keeps control complexity manageable through decentralized control units for each drivetrain.
Data Source
AI summary
The present invention relates to electric drivetrain kits for converting all-terrain vehicles into hybrid or electric vehicles. In exemplary embodiments, a conversion kit replaces an existing standard single motor and transmission drive system with a dual set-up including a motor for each rear wheel and a split transmission that houses two sets of gear reduction components in a single housing or an all-wheel configuration with two transmission sets (front and rear). Dual output shafts in each transmission set drive the wheels independently to provide the torque needed as required and demanded by each wheel. System electronics send signals to the motors and other components to manage the system and independently control each wheel.