Hybrid Driving Apparatus Motor Input Path Design
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Solution Overview
Problem
Existing hybrid driving apparatuses face challenges in compact vehicle applications due to increased transmission length when a motor is added, making it difficult to implement a hybrid system without extending the full length of the transmission.
Innovation Solution
A hybrid driving apparatus is designed with a forward-reverse switching mechanism, a transmission, and an input path on the output side of the switching mechanism, allowing motor output to be inputted, which enables a hybrid function with minimal remodeling and improved fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a motor is added to a continuously variable transmission to constitute a hybrid driving apparatus, then hybrid function is achieved, but the entire length of the transmission increases by the axial length of the motor
Solution Approach 1:
The motor is positioned on the side opposite to the engine with respect to the pulleys, and disposed coaxially with the rotation shaft of the engine. This spatial arrangement in a different dimension (opposite side positioning) allows the motor output to be transmitted through the existing transmission structure without extending the overall transmission length, resolving the contradiction between achieving hybrid function and maintaining compact dimensions
2Length of moving object
If the motor is disposed on the side opposite to the engine with respect to pulleys, then the transmission length does not increase, but the structural complexity increases
Solution Approach 1:
The existing transmission structure serves dual functions: it transmits both engine output and motor output to the drive wheels. By positioning the motor on the opposite side and utilizing the existing transmission components for both power sources, the system achieves multi-functionality without requiring separate transmission paths, thereby limiting structural complexity while maintaining compact length
3Ease of manufacture
If an input path is provided on the output side of the forward-reverse switching mechanism, then hybrid function is achieved with minimal remodeling, but the device complexity increases
Solution Approach 1:
The transmission system is segmented into distinct functional sections: the forward-reverse switching mechanism remains on the upstream side, while a new input path is created on the output side for motor connection. This segmentation allows the motor to be integrated into the existing structure with minimal remodeling of the original transmission components, balancing ease of manufacture with controlled complexity
Data Source
AI summary
A hybrid driving apparatus includes a forward-reverse switching mechanism, a transmission, an input path disposed on an output side of the forward-reverse switching mechanism, and a motor connected to the input path.