Front Differential-Integrated Engine Support Bracket for NVH
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Solution Overview
Problem
In four-wheel drive vehicles, the installation of a front differential and front differential shaft interferes with the engine mount, leading to an increased length of the engine support bracket, which reduces its dynamic stiffness and affects noise, vibration, and harshness (NVH) characteristics, particularly during high-speed driving.
Innovation Solution
A front differential-integrated engine support bracket with a connecting portion, a fixing portion, and a fastening portion, where the fastening portion includes a groove with an internal screw thread, allowing the front differential and engine support bracket to be integrally fastened, thereby reducing the bracket's length and improving dynamic stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the engine support bracket length is increased to avoid interference with the front differential, then the parts can be installed without interference, but the dynamic stiffness of the bracket is reduced
Solution Approach 1:
The patent merges the engine support bracket with the front differential housing by integrating the differential housing into the bracket structure. This allows the bracket to maintain sufficient dynamic stiffness while providing adequate space for the front differential components, eliminating the need to increase bracket length to avoid interference.
Solution Approach 2:
Instead of increasing the length of the engine support bracket in one dimension to avoid interference, the patent utilizes the three-dimensional space by integrating the front differential housing into the bracket structure, effectively using vertical and lateral dimensions to resolve the spatial conflict.
2Ease of operation
If the engine support bracket length is increased to avoid interference with the front differential, then the parts can be installed without interference, but the resonant frequency is reduced
Solution Approach 1:
By merging the front differential housing with the engine support bracket, the patent creates a more compact integrated structure that maintains higher resonant frequency while providing sufficient installation space, avoiding the need to increase bracket length.
3Ease of operation
If the engine support bracket length is increased to avoid interference with the front differential, then the parts can be installed without interference, but the vibration sensitivity is reduced
Solution Approach 1:
The integration of the front differential housing into the engine support bracket creates a stiffer, more compact structure that reduces vibration sensitivity while maintaining installation feasibility, eliminating the need to increase bracket length.
Data Source
AI summary
A front differential-integrated engine support bracket, which may be mounted on an engine to connect the engine and an engine mount may include a connecting portion formed in a front thereof and connected to the engine mount, a fixing portion formed in a rear thereof and fixed to the engine, a fastening portion formed between the fixing portion and the connecting portion, wherein the engine support bracket may be fastened together with a front differential mounted on the engine by the fastening portion.