Motor-Driven Screw Strut for Vehicle Height Control
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Solution Overview
Problem
Existing electronic control suspension systems for vehicles are complex, inefficient, and increase CO2 emissions due to hydraulic mechanisms, and often fail to automatically control vehicle height, leading to reduced driving comfort and stability.
Innovation Solution
An electronic control suspension system using a motor-driven screw mechanism to vertically move a strut assembly, converting rotational force into linear motion to control vehicle height, with an elastic member to reduce load and improve efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hydraulic system is used to control suspension, then vehicle height control capability is improved, but system complexity and fuel consumption increase
Solution Approach 1:
The patent extracts and removes the complex hydraulic system components (hydraulic pump, reservoir, hydraulic lines, hydraulic cylinder) from the suspension system, replacing them with a simplified motor-driven strut assembly that achieves the same vehicle height control function with fewer parts and lower complexity
Solution Approach 2:
The patent replaces the hydraulic mechanical system with an electric motor-driven system. The motor converts electrical energy to mechanical rotation, which is then transformed into linear motion through a screw mechanism, substituting the hydraulic fluid-based mechanical system with an electrically-driven mechanical system that is simpler and more fuel-efficient
2Adaptability or versatility
If a hydraulic system is used to control suspension, then vehicle height control capability is improved, but fuel efficiency deteriorates
Solution Approach 1:
The patent replaces the hydraulic mechanical system with an electric motor-driven system. The motor converts electrical energy to mechanical rotation, which is then transformed into linear motion through a screw mechanism, substituting the hydraulic fluid-based mechanical system with an electrically-driven mechanical system that is simpler and more fuel-efficient
3Device complexity
If a simple strut structure is used, then system complexity is reduced, but vehicle height control capability is lost
Solution Approach 1:
The patent introduces a dynamic adjustment mechanism into the strut assembly by incorporating a motor and screw mechanism. This allows the strut assembly to dynamically change its length and adjust vehicle height in real-time, transforming a static simple strut structure into a dynamic height-adjustable system that maintains simplicity while gaining control capability
Solution Approach 2:
The motor-driven strut assembly serves multiple functions: it provides the basic suspension support function of a simple strut, while simultaneously enabling active vehicle height control. This multi-functional design achieves height control capability without requiring a separate complex hydraulic system
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 system enhances steering stability and driving comfort by maintaining constant vehicle height, improving fuel efficiency and reducing emissions by simplifying the system and reducing weight and costs.
Implementation Method 1
a control module configured to convert the rotating force of the motor to a linear motion of the strut assembly when a rotating force of a motor is provided to a screw section thereof surrounding the strut assembly
Implementation Method 2
An elastic member may be provided between an end of the inside of the housing and a lower end of the lifting shaft to compensate for torque of the motor and reduce load applied to the motor and the lifting shaft. The elastic member may be a spring, for example.
Data Source
AI summary
An electronic control suspension (ECS) system for vehicles is provided. The ECS system includes a strut assembly which is coupled to a vehicle body, and a lower portion of which is inserted through the housing so as to absorb the rocking from the wheel. A vehicle-height control module converts a rotating force of a motor to a linear motion of the strut assembly when the rotating force of the motor is provided to a screw section thereof surrounding the stmt assembly. This allows the strut assembly to be vertically moved relative to the housing, thereby controlling the height of a vehicle.