Supercharger Front Cover and Coupling Sleeve for Compact Airflow Packaging

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Solution Overview

Problem

Existing superchargers face challenges in compact packaging and air flow performance due to their size and structural design, which can affect airflow efficiency.

Innovation Solution

A supercharger design featuring a main housing with an internally received front cover and a coupling sleeve that reduces package space by encapsulating the drive coupling, utilizing a coupling sleeve to replace the inner wall of the main housing, and incorporating a cartridge-style front cover for structural support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a traditional supercharger structure with inner walls and separate coupling components is used, then structural support is provided, but the packaging space increases and airflow performance deteriorates

Engineering Contradiction:
Improvesupercharger package spaceVSAvoidairflow obstruction
Core Design Contradiction:
Volume of moving objectVSObject-generated harmful factors

Solution Approach 1:

The patent combines the coupling sleeve and housing inner wall into a single integrated component. The coupling sleeve serves dual functions: it couples the drive coupling between input and rotor shafts while simultaneously acting as the housing inner wall for structural support. This merging eliminates separate components and reduces overall package space without compromising structural integrity or airflow performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The coupling sleeve is designed as a multi-functional component that performs multiple roles: (1) coupling the drive coupling assembly, (2) providing structural support as the housing inner wall, and (3) maintaining proper spacing between components. This universal design reduces the number of parts needed and minimizes packaging volume while preserving all necessary functions.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Volume of moving object

If the supercharger size is reduced for compact packaging, then packaging efficiency improves, but structural support and airflow performance may be compromised

Engineering Contradiction:
Improvesupercharger sizeVSAvoidstructural support
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

By merging the coupling sleeve and housing inner wall into one component, the design achieves compact sizing without sacrificing structural support. The integrated component maintains the necessary strength and rigidity while reducing overall supercharger volume, allowing efficient packaging in limited engine bay spaces.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If traditional separate coupling and housing components are used, then assembly is straightforward, but device complexity and packaging space increase

Engineering Contradiction:
Improvenumber of componentsVSAvoidpackaging space
Core Design Contradiction:
Device complexityVSVolume of moving object

Solution Approach 1:

The patent reduces device complexity by combining multiple separate components (coupling sleeve and housing inner wall) into a single integrated coupling sleeve assembly. This reduces the total number of parts, simplifies the bill of materials, and decreases packaging space requirements while maintaining all necessary functional capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12590585B2Cartridge style front cover and coupling cavity sleeve for automotive supercharger
Publication Date: 2026.03.31 EATON INTELLIGENT POWER LTD
  • US12590585B2 patent drawing
  • US12590585B2 patent drawing
  • US12590585B2 patent drawing

AI summary

A supercharger includes a main housing, a front cover coupled to the main housing and having an inner portion received within the main housing, a drive coupling assembly arranged between an input shaft and a rotor shaft, and a coupling sleeve disposed about the drive coupling.