Decoupling Carrier Structure for Electro-Hydraulic Vibration Isolation
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Solution Overview
Problem
The increasing use of electro-hydraulic units in motor vehicles, particularly with electrification, leads to vibration issues that can cause noise and disrupt the vehicle's dynamics, necessitating a decoupling solution that effectively dampens these vibrations while maintaining a stiff connection.
Innovation Solution
A decoupling carrier system for electro-hydraulic units, comprising damper receptacles, damper bodies made from materials like thermoplastic elastomers, and fastening receptacles with a line carrier opening, which allows for a force-transmitting yet damped connection to the chassis carrier, thereby isolating vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the electro-hydraulic unit is rigidly connected to the chassis carrier, then the connection stiffness is improved, but vibrations are transmitted causing noise and disturbance
Solution Approach 1:
A decoupling carrier is introduced as an intermediary component between the electro-hydraulic unit and the chassis carrier. This carrier includes a damper body made of rubber-like material that absorbs vibrations while maintaining force transmission capability, thus mediating between the stiff connection requirement and vibration isolation requirement
Solution Approach 2:
The decoupling carrier utilizes composite construction with a damper body made of rubber-like material (such as thermoplastic elastomer) combined with metallic fastening receptacles. This composite approach provides both vibration damping characteristics and sufficient mechanical strength for force transmission
2Object-generated harmful factors
If the electro-hydraulic unit is decoupled from the chassis carrier, then vibrations are reduced, but the connection stiffness deteriorates
Solution Approach 1:
The damper body material properties are carefully selected to achieve optimal balance between vibration damping and force transmission. The rubber-like material parameters (hardness, damping coefficient) are chosen to provide sufficient stiffness for operational dynamics while effectively reducing vibrations
3Object-generated harmful factors
If additional components are added for vibration damping, then vibration isolation is improved, but device complexity increases
Solution Approach 1:
The decoupling carrier merges multiple functions into a single integrated component: vibration damping, force transmission, and mounting integration. By combining the damper body with fastening receptacles and receptacle openings for line carriers, the design reduces the number of separate components while achieving vibration isolation
4Volume of moving object
If construction space is reduced for individual operating units, then space efficiency is improved, but vibration isolation capability deteriorates
Solution Approach 1:
The decoupling carrier serves multiple functions simultaneously: it acts as a mounting bracket, vibration isolator, and integration point for line carriers. This multi-functionality allows effective vibration isolation to be achieved within the constrained construction space of modern motor vehicles
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
The decoupling carrier effectively reduces vibrations transmitted to the electro-hydraulic unit and the chassis, minimizing noise and maintaining the necessary stiffness for operational dynamics, thus enhancing the overall vehicle performance and passenger comfort.
Implementation Method 1
a decoupling carrier for an electro-hydraulic unit for a chassis of a motor vehicle... The decoupling carrier is configured to protect an electro-hydraulic unit or other operating unit from vibrations from the chassis side or conversely to protect the chassis carrier from the introduction of vibrations from the unit in question
Implementation Method 2
It is advantageous to use a rubber-like material, which is (at least approximately) incompressible and can dissipate induced stresses into motion and heat. For example, a so-called thermoplastic elastomer is advantageous due to its recyclability
Data Source
AI summary
A decoupling carrier for an electro-hydraulic unit for a chassis of a motor vehicle. The decoupling carrier includes (i) at least one damper receptacle, which can be connected to an electro-hydraulic unit in a force-transmitting manner; (ii) a damper body for each damper receptacle; and (iii) a fastening receptacle for the power-transmitting connection to a chassis carrier of a motor vehicle for each damper body. The fastening receptacle includes a receptacle opening for a line carrier.