E-charger Dampener for Radial Load Reduction
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Solution Overview
Problem
Conventional electrically driven compressors, or e-chargers, are often bulky and cost-prohibitive, posing challenges for compact and cost-effective solutions in vehicle engine systems.
Innovation Solution
The proposed solution involves an electrically driven compressor assembly with a damping system that includes a shaft, a compressor wheel, an electric motor, and a housing assembly with a dampener between the first and second members of the housing assembly, which is configured to elastically deform and provide damping of forces transferred between the members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional e-charger designs are used, then the compressor can provide sufficient boosting performance, but the device becomes bulky and costly
Solution Approach 1:
A dampener is incorporated into the housing assembly between the first and second members to provide beforehand cushioning for radial and axial loads. The dampener elastically deforms to absorb shock loads before they reach the bearings, allowing the use of smaller, more cost-effective bearings while maintaining reliability
2Ease of manufacture
If conventional e-charger designs are used, then the compressor can provide sufficient boosting performance, but the device becomes cost-prohibitive
Solution Approach 1:
The dampener provides beforehand cushioning by elastically deforming to absorb radial and axial shock loads before they reach the bearings and housing structure. This protects the structural integrity while allowing the use of more cost-effective bearing and housing materials
3Duration of action of stationary object
If the dampener is added to the housing assembly, then the bearing loads are reduced and operating life increases, but the device complexity increases
Solution Approach 1:
The dampener is merged into the housing assembly by positioning it between the first and second members, where it elastically deforms to absorb radial and axial loads. This integration protects the bearings and extends operating life while adding minimal structural complexity
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 radial and axial loads on the e-charger, increases its operating life, allows for the use of cost-effective and compact bearings, and enables a more compact and efficiently manufactured e-charger compared to conventional designs.
Implementation Method 1
The dampener is configured to elastically deform to provide dampening of a force transferred between the first member and the second member of the housing assembly
Data Source
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AI summary
A compressor assembly includes a shaft (103) and a compressor wheel (104) that is supported on the shaft. The compressor assembly also includes an electric motor (108) with a stator (162) and a rotor (160). The electric motor is configured to rotate the shaft and the compressor wheel. The compressor assembly additionally includes a housing assembly (101) configured to house the stator, the rotor, and at least part of the shaft. The housing assembly includes a first member (184) and a second member (186). Moreover, the compressor assembly includes a dampener (252, 254) disposed between the first member and the second member of the housing assembly. The dampener is configured to elastically deform to provide dampening of a force transferred between the first member and the second member of the housing assembly.