ATV Powertrain Layout With Separate Lubrication for Wear Control
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Solution Overview
Problem
Current all-terrain vehicles with integrated engines and transmissions suffer from poor stability and inconvenient mounting due to shared lubrication systems, leading to increased wear and maintenance challenges.
Innovation Solution
A powertrain design featuring a continuously variable transmission coupled to an engine, with separate power input and output shafts arranged within a casing to ensure independence and stability, allowing for smooth power transmission and compact structural layout, facilitating four-wheel drive capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the engine and transmission share a lubrication system, then the structure is more compact, but the wear increases and reliability decreases
Solution Approach 1:
The patent divides the lubrication system into separate independent systems for the engine and transmission. The engine has its own lubrication system with engine oil, while the transmission has a separate lubrication system with transmission oil. This segmentation prevents cross-contamination and allows each system to be optimized independently, reducing wear and improving reliability while maintaining structural compactness through integrated mounting.
Solution Approach 2:
The patent extracts the transmission from the engine's lubrication system, creating an independent transmission lubrication system. The transmission is mounted separately with its own oil pan, oil pump, and lubrication passages, taking it out from the engine's integrated lubrication system to prevent shared wear and maintenance issues.
2Ease of manufacture
If the engine and transmission are integrally formed, then the mounting is simpler, but the stability deteriorates
Solution Approach 1:
The patent segments the engine and transmission into separate mountable units with independent lubrication systems. The transmission is mounted separately on the vehicle chassis with its own mounting brackets and positioning, allowing independent stability optimization for each component while simplifying the overall mounting process through modular assembly.
Data Source
AI summary
The present disclosure describes a powertrain and an all-terrain vehicle. The powertrain includes an engine, a continuously variable transmission and a transmission. The continuously variable transmission is drivingly coupled to the engine. The transmission includes a casing, a power input shaft, a first power output shaft and a second power output shaft. The power input shaft, the first power output shaft and the second power output shaft are all provided in the casing. The power input shaft is drivingly coupled to the continuously variable transmission, the power input shaft is drivingly coupled to the first power output shaft and the second power output shaft separately in the casing, and an axis of the power input shaft is parallel to an axis of the first power output shaft and perpendicular to an axis of the second power output shaft.