Independent Rear Suspension with Vertical Trailing Arm Separation
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Solution Overview
Problem
Conventional rear-wheel suspension systems, particularly in motor vehicles, face challenges in maintaining optimal wheel attitude, tracking, and camber under dynamic stresses while accommodating the space requirements for electric drive trains, which can restrict ride comfort and installation flexibility.
Innovation Solution
An independent rear-wheel suspension system featuring left-hand and right-hand transverse links, trailing arm units with elastomer bearing bushes, and an open installation space that allows for the integration of an electric drive train, enabling efficient movement and compact design to maintain wheel carrier orientation and accommodate electrical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional rigid rear axle suspension is used, then wheel attitude and tracking are maintained under dynamic stresses, but installation space for electric drive train is restricted and ride comfort is compromised
Solution Approach 1:
The suspension system is divided into independent left and right trailing arm units, each with separate trailing arms articulated at different positions. This segmentation allows each side to be independently optimized for space accommodation while maintaining overall suspension function, enabling the open installation space required for electric drive train integration.
Solution Approach 2:
The articulated front ends of trailing arms are separated in the vertical direction rather than only horizontally arranged. This vertical separation creates an open installation space in the horizontal plane, allowing electric drive train components to be installed without compromising suspension performance or increasing structural complexity.
2Reliability
If independent rear-wheel suspension with multiple trailing arms is used, then ride comfort is enhanced through wheel carrier orientation control, but space for electric drive train installation is reduced
Solution Approach 1:
By separating articulated front ends of trailing arms in the vertical direction, the design creates horizontal space for electric drive train installation while maintaining vertical control over wheel carrier orientation through the articulated geometry and elastomer bearing bushes.
Solution Approach 2:
The elastomer bearing bushes are integrated into the trailing arm articulation points, combining the functions of mechanical connection and orientation control within the same structural elements, thereby maximizing space efficiency without compromising wheel carrier orientation reliability.
3Stability of the object's composition
If transverse links and trailing arms are arranged conventionally, then suspension stability is maintained, but open installation space is not formed for electric components
Solution Approach 1:
The transverse links and trailing arms are arranged with vertical separation at articulation points, creating horizontal open space for electric components while maintaining suspension stability through the geometric configuration and elastomer bearing bushes that control movement paths.
Solution Approach 2:
The trailing arm units serve dual functions: maintaining suspension stability through articulated connections and creating open installation space through their vertical arrangement, allowing the same structural elements to fulfill both stability and space creation requirements.
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 design enhances ride comfort by maintaining wheel carrier orientation and provides sufficient space for the electric drive train, optimizing the suspension system's performance and installation flexibility without compromising on the shape and size of the installation space.
Implementation Method 1
The trailing arms are each articulated at a front end on the chassis of the motor vehicle and at a rear end on one of the wheel carriers. The articulated joints are formed by elastomer bearing bushes.
Data Source
AI summary
A motor vehicle independent rear-wheel suspension system including a left-hand and a right-hand transverse link, each articulated at an inner end on a chassis of the motor vehicle and fixedly connected at an outer end to a wheel carrier. The suspension system having a left-hand and a right-hand trailing arm unit. Each trailing arm unit articulated a front end on the chassis of the motor vehicle and at a rear end on a wheel carrier. Open installation space is formed between the trailing arm units and the transverse links for at least a partial accommodation of an electrical drive train.