Wet Double Clutch Module Assembly for Safer Transmission Integration

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Solution Overview

Problem

The assembly of wet double clutch mechanisms in motor vehicle transmissions is fragile and prone to damage during transport and assembly, requiring careful handling and quality control, which disrupts manufacturing lines and increases costs.

Innovation Solution

A torque transmission module with a pre-assembled wet double clutch mechanism and clutch housing, protected by a cover, which simplifies assembly and reduces the risk of damage by allowing functional testing before vehicle assembly, and incorporates a low or high pressure oil supply pump supported by the clutch housing to enhance reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the wet double clutch mechanism is assembled separately on the clutch support, then the transmission can be configured with modular components, but the assembly becomes fragile and prone to damage during transport and assembly operations

Engineering Contradiction:
Improvemodular assembly configurationVSAvoidassembly integrity during transport
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent merges the wet double clutch mechanism with the clutch support into a single integrated assembly. The clutch mechanism is permanently mounted on the clutch support, eliminating the need for separate handling of these components during transport and assembly operations. This integration resolves the contradiction by maintaining modular configuration benefits while preventing damage through unified structure.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If the wet double clutch mechanism is handled separately during assembly, then component flexibility is maintained, but careful handling and quality control checks are required which disrupt production lines

Engineering Contradiction:
Improvecomponent handling flexibilityVSAvoidproduction line efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

By integrating the clutch mechanism with the clutch support into a pre-assembled unit, the patent reduces the number of separate assembly operations required on the production line. The integrated assembly can be installed as a single component, eliminating the need for multiple quality control checks and careful handling procedures, thereby improving production efficiency while maintaining adaptability.

Inventive Principle:
Principle #5Merging (Combining)

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 solution reduces manufacturing costs, increases reliability, and simplifies the assembly process by eliminating the need for additional quality control steps, ensuring the wet double clutch mechanism is handled and assembled more safely and efficiently.

Implementation Method 1

a high-pressure feed pump for actuating the pistons

Methodology Applied
Scientific EffectHydraulic pressure: Hydraulic Press

Implementation Method 2

the friction linings of the discs must be kept permanently wet with oil

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP2998602B1Torque transmission module intended for being provided on a transmission of a motor vehicle
Publication Date: 2023.11.01 VALEO EMBRAYAGES SAS
  • EP2998602B1 patent drawingFigure 1
  • EP2998602B1 patent drawingFigure 2
  • EP2998602B1 patent drawingFigure 3

AI summary

The invention relates to a torque transmission module (M) intended to equip a transmission (1) of a motor vehicle, comprising: - a cover (10), - a wet double clutch mechanism (11) movable in rotation about an axis (X), and - a clutch housing (12), having an oil distribution device for supplying the wet double clutch with oil, the cover (10) and the clutch housing (12) being assembled so as to form a housing defining a compartment in which the wet double clutch mechanism is partially received, the housing being suitable for being received in whole or in part in a clutch bell (5) of the transmission.