Utility Vehicle Power Unit Bracket Mounting
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Solution Overview
Problem
The existing power unit configurations for utility vehicles, where the engine and transmission are mounted on a sub frame, result in increased vehicle weight due to the heavy sub frame and larger arrangement space, necessitating a solution that reduces weight while maintaining efficient connection between the engine and transmission.
Innovation Solution
A power unit configuration for utility vehicles that includes an engine and a transmission arranged independently, connected via a V belt continuously variable transmission and a connecting bracket, eliminating the need for a sub frame by using mounting holes and tightening members for precise alignment and connection, and supported by damper mechanisms to absorb vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the engine and transmission are mounted on a sub frame, then the connection between engine and transmission is secure, but the vehicle weight increases due to the heavy sub frame
Solution Approach 1:
The invention extracts and eliminates the sub frame from the power unit configuration. Instead of mounting the engine and transmission on a separate sub frame, the transmission is directly mounted to the engine body, removing the unnecessary intermediate structure and reducing vehicle weight while maintaining secure connection
Solution Approach 2:
The invention merges the engine and transmission mounting functions by directly attaching the transmission to the engine body. The engine body serves dual purposes as both the engine housing and the mounting base for the transmission, eliminating the need for a separate sub frame structure
2Stability of the object's composition
If the engine and transmission are mounted on a sub frame, then the arrangement is stable, but the arrangement space becomes larger
Solution Approach 1:
The engine and transmission are merged into a compact integrated assembly where the transmission is directly mounted to the engine body. This eliminates the spatial separation required by a sub frame structure, reducing the overall arrangement space while maintaining stability through direct rigid connection
3Weight of moving object
If a connecting bracket is used to connect engine and transmission without sub frame, then the vehicle weight is reduced, but the connection complexity increases
Solution Approach 1:
The connection structure is segmented into distinct mounting points: a first mounting hole in the engine body for connecting to the transmission housing, and a second mounting hole in the transmission housing for connecting to the engine. This segmentation simplifies the overall connection by breaking it into manageable, standardized fastening points rather than a complex integrated structure
Solution Approach 2:
A connecting bracket serves as an intermediary element between the engine and transmission, providing a simple rigid connection that eliminates the need for a heavy sub frame. The bracket uses straightforward mounting holes and fasteners, reducing connection complexity compared to alternative mounting solutions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the overall weight of the vehicle, allows for accurate and efficient connection of the engine and transmission without a sub frame, and effectively absorbs vibrations, enhancing mounting accuracy and stability.
Implementation Method 1
the sub frame is fixed to a chassis frame via a damper
Data Source
AI summary
An engine and a transmission are connected to each other via a connecting bracket interposed therebetween in the vehicular lengthwise direction. The engine is provided with a first connector having a first mounting hole substantially parallel to a vehicle lengthwise direction, and a first tightening member to be inserted into the first mounting hole on a side opposite to the engine connects the first end of the connecting bracket to the first connector. The transmission is provided with a second connector having a second mounting hole penetrating in a vehicular widthwise direction, and a second tightening member to be inserted into the second mounting hole connects the second end of the connecting bracket to the second connector.