Motor-Pump Unit Assembly With Shared Chassis Fastening

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Solution Overview

Problem

Vehicle manufacturers face challenges in producing motor vehicle series with varying equipment variants, particularly due to the high costs of active hydraulic damping systems, which often necessitate offering both active and passive damping systems.

Innovation Solution

A motor vehicle series with two different variants, where one variant includes an active hydraulic damping system with hydraulically adjustable shock absorbers and a motor-pump unit, and the other variant uses a stabilizer, both utilizing an identically designed chassis component fastening device to reduce production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an active hydraulic damping system is installed in one motor vehicle variant, then the damping performance and vehicle stability are improved, but the production cost increases significantly

Engineering Contradiction:
Improvedamping performanceVSAvoidproduction cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent applies universality by designing a common fastening device that serves dual purposes: it fastens the stabilizer in passive damping system variants and fastens the motor-pump unit assembly in active hydraulic damping system variants. This multi-functional fastening device eliminates the need for separate mounting systems, thereby reducing production costs while maintaining the ability to provide high-performance active damping where required

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

2Adaptability or versatility

If different fastening devices are designed for stabilizer and motor-pump unit assembly, then each component can be optimized for its specific function, but the device complexity and production cost increase

Engineering Contradiction:
Improvecomponent optimizationVSAvoidfastening device variety
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fastening device is designed with universal applicability, featuring identical fastening elements that can accommodate both the stabilizer and the motor-pump unit assembly. The design incorporates adaptable mounting structures that can be configured for different components without requiring fundamentally different fastening systems, thus reducing device complexity while maintaining functional optimization

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

3Ease of operation

If separate mounting systems are used for stabilizer and motor-pump unit assembly, then each mounting system can be specialized, but the manufacturing process becomes more complex and expensive

Engineering Contradiction:
Improvemounting specializationVSAvoidmanufacturing efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The mounting system is designed as a universal platform that can accommodate both stabilizer and motor-pump unit assembly through standardized fastening elements. This unified approach simplifies the manufacturing process by eliminating the need for separate specialized mounting procedures, thereby improving manufacturing efficiency and productivity while still allowing for proper installation of each component type

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

Data Source

PatentUS12312005B2Motor vehicle series and motor pump unit assembly
Publication Date: 2025.05.27 DR ING H C F PORSCHE AG
  • US12312005B2 patent drawing
  • US12312005B2 patent drawing

AI summary

A motor vehicle series includes two different motor vehicle variants. The two motor vehicle variants include an identically designed chassis component fastening device, to which a stabilizer is fastened in the first motor vehicle variant and a motor-pump unit assembly with a motor-pump unit of a hydraulic damping system is fastened in the second motor vehicle variant. The motor-pump unit assembly includes a motor-pump unit for a hydraulic damping system. A holding tube is fastened to the motor-pump unit. A holding element, which is configured to be mounted on a chassis component fastening device of a motor vehicle, is fastened to the end of the holding tube facing away from the motor-pump unit.