Hybrid ATV Drivetrain Layout for Intelligent Four-Wheel Drive
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Solution Overview
Problem
Existing all-terrain vehicles face challenges such as limited power performance due to smaller engine discharging amounts, excessive exhaust noise, inefficient use of space, exposure of transmission shafts leading to damage, and inadequate cooling systems that do not utilize external air effectively.
Innovation Solution
A hybrid all-terrain vehicle design that incorporates a signal acquirer, engine, engine controller, differential, driving motor, motor controller, battery power source, and a compact structural layout. This design enables intelligent four-wheel drive and improves power performance without increasing engine discharging amount, while also optimizing space usage and protecting critical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the discharging amount of the engine is increased to improve power performance, then the power performance is improved, but the exhaust noise increases
Solution Approach 1:
The power system is segmented into two independent power sources: an engine and an electric motor. The engine provides baseline power while the electric motor provides additional power when needed, allowing the engine to operate at optimal lower displacement levels with reduced noise, while still achieving high overall power performance through combined output.
Solution Approach 2:
The electric motor serves multiple functions: it provides additional power for high-performance needs, acts as a generator during regenerative braking, and can operate independently or in combination with the engine. This multi-functionality allows the system to achieve high power performance without always relying on high engine displacement, thereby reducing exhaust noise.
2Ease of operation
If the transmission shaft is exposed to the outside for easy access, then the ease of operation is improved, but the reliability deteriorates due to erosion and external forces
Solution Approach 1:
The transmission shaft is nested within a protective housing structure that encloses it from external environmental factors such as water, dust, and debris. This nested design protects the transmission shaft while maintaining a compact overall structure, allowing the shaft to be shielded without compromising the vehicle's compactness.
3Temperature
If an external radiator is used to cool the engine with liquid, then the cooling effectiveness is improved, but the device complexity increases and space is occupied
Solution Approach 1:
The electric motor's cooling system is designed to utilize ambient air flow generated during vehicle operation. The motor housing incorporates air intake and exhaust pathways that passively draw cooling air through the motor during normal operation, eliminating the need for separate liquid cooling radiators and complex cooling infrastructure.
Data Source
AI summary
The present disclosure discloses an all-terrain vehicle. The all-terrain vehicle includes: a signal acquirer; an engine; an engine controller; a first differential; a first wheel; a driving motor; a motor controller; a battery power source electrically connected with the driving motor; a second differential in transmission connection with the driving motor; and second wheels in transmission connection with the second differential and are located at both lateral sides of the second differential. Therefore, by connecting and matching the first differential, the engine, the driving motor and the second differential with the corresponding components, the hybrid all-terrain vehicle allows intelligent four-wheel drive, reduces energy consumption, and has a compact and reasonable structure.