Shock Absorber Coil Control for Suspension Fluid Viscosity
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Solution Overview
Problem
Existing suspension systems for work vehicles lack efficient temperature management and adaptive viscosity control in shock absorbers, which affects the vehicle's operational performance and comfort.
Innovation Solution
A suspension system that includes a shock absorber with a coil and a controller that detects the vehicle's status, predicts the temperature of the fluid based on the coil's electrical resistance, and adjusts the electric current to maintain optimal viscosity, ensuring efficient temperature management and adaptive suspension performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the shock absorber operates without temperature management, then the device complexity is reduced, but the suspension performance and fluid viscosity control deteriorate
Solution Approach 1:
The system performs preliminary temperature assessment by measuring coil electrical resistance before operation to predict fluid temperature and viscosity, allowing proactive adjustment of electric current to optimal viscosity range before the shock absorber operates, ensuring reliable suspension performance without complex real-time temperature management
Solution Approach 2:
The system establishes a feedback loop where coil electrical resistance measurements provide information about fluid temperature, which feeds back to the controller to adjust electric current delivery, maintaining optimal fluid viscosity dynamically based on actual thermal conditions during operation
2Temperature
If electric current is continuously applied to the coil, then the fluid temperature can be maintained, but energy consumption increases
Solution Approach 1:
Instead of continuous current application, the system uses periodic or intermittent current delivery based on predicted temperature needs and actual operating conditions, applying current only when and where required to maintain optimal fluid viscosity, thereby reducing overall energy consumption while preserving temperature control
Solution Approach 2:
The system dynamically changes the electric current parameter based on predicted fluid temperature and work status, adjusting current magnitude and duration to match actual thermal requirements, avoiding unnecessary energy consumption while maintaining adequate temperature control for optimal viscosity
3Manufacturing precision
If the system continuously monitors and adjusts coil current, then the viscosity control precision is improved, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical temperature sensing and adjustment mechanisms with electrical measurements of coil resistance, using electrical properties to infer thermal state and control viscosity, achieving precise control with simpler electronic rather than mechanical systems
Solution Approach 2:
The coil serves multiple functions: it acts as both the heating element and the temperature sensor through its electrical resistance measurements, eliminating the need for separate sensing components and simplifying the overall control system architecture while maintaining precise viscosity control
4Ease of operation
If the shock absorber fluid temperature is not managed, then the ease of operation is maintained, but the operational performance and comfort deteriorate
Solution Approach 1:
The shock absorber system performs self-diagnosis and self-adjustment by using its own coil electrical resistance to determine fluid temperature and automatically adjusting current to maintain optimal viscosity, eliminating the need for external temperature monitoring or manual adjustment while improving suspension response performance
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 effectively manages temperature and viscosity, enhancing the suspension's performance and comfort by optimizing the shock absorber's properties based on the vehicle's operational status, ensuring optimal response and reduced wear.
Implementation Method 1
provide an electric current in the coil based on the predicted temperature of the fluid
Implementation Method 2
determine an electrical resistance of the coil in a shock absorber based on the work status, predict a temperature of a fluid in the shock absorber based on the electrical resistance of the coil
Implementation Method 3
a shock absorber including a magnetorheological fluid, a coil positioned at least partially in the magnetorheological fluid
Data Source
AI summary
A suspension system for a work vehicle includes a shock absorber including a fluid, a coil positioned at least partially in the fluid, a sensor configured to detect a work status of the work vehicle, and a controller. The controller is configured to determine the work status of parked or operational based on the sensor, determine an electrical resistance of the coil in a shock absorber based on the work status, predict a temperature of a fluid in the shock absorber based on the electrical resistance of the coil, provide an electric current in the coil based on the predicted temperature of the fluid, determine the electrical resistance of the coil while the electric current is on, and terminate the electric current in the coil based on the work status and the predicted temperature.