Load Sensitive Ride System Dynamic Compliance Adjustment
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Solution Overview
Problem
Existing ride control and tire inflation systems in vehicles cannot dynamically adjust compliance and tire pressure based on varying payload weights, leading to suboptimal ride comfort and shock load management.
Innovation Solution
A load-sensitive ride system that includes a payload weight measuring system, ride control circuit, and controller to adjust hydraulic flow and tire pressure in real-time, decreasing compliance and increasing tire pressure with increasing payload weight, and increasing compliance and decreasing tire pressure with decreasing payload weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If average preset compliance and tire pressure are used, then generally acceptable ride comfort is achieved, but optimal performance cannot be maintained across varying payload weights
Solution Approach 1:
The patent implements dynamic adjustment of compliance characteristics in the ride control system based on detected payload weight. The system transitions from static preset compliance to dynamically adjustable compliance by modifying hydraulic circuit parameters (such as valve positions or pump displacement) according to the actual load condition, enabling optimal ride comfort across varying payload weights
Solution Approach 2:
The patent employs a feedback mechanism where the system detects payload weight and uses this information to automatically adjust ride control compliance and tire pressure. The controller receives weight sensor data and modifies system parameters accordingly, creating a closed-loop control system that adapts to changing load conditions without manual intervention
2Strength
If compliance is decreased for heavy loads, then shock load reduction is improved, but ride comfort deteriorates for light loads
Solution Approach 1:
The patent changes the compliance parameter of the ride control system based on payload weight detection. For heavy loads, the system decreases compliance to reduce shock loads and protect the chassis. For light loads, the system increases compliance to improve ride comfort. This dynamic parameter adjustment resolves the contradiction between shock resistance and comfort
3Force
If tire pressure is increased for heavy loads, then load support capability is improved, but energy consumption increases
Solution Approach 1:
The patent implements dynamic tire pressure adjustment based on detected payload weight. The system inflates tires to higher pressures when heavy loads are detected to improve load support capability, and deflates tires to lower pressures when loads are light to reduce energy consumption during operation. This dynamic adjustment optimizes both performance and energy efficiency
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 system provides improved ride comfort and reduced shock loads by dynamically adjusting ride control and tire inflation based on payload weight, enhancing the vehicle's ability to absorb inertial forces across different load conditions.
Implementation Method 1
The payload weight measuring system is configured to measure payload weight in the implement and generate a signal indicative of the payload weight
Implementation Method 2
The ride control circuit is configured to adjust hydraulic flow to and from the boom cylinder
Implementation Method 3
the controller is configured to receive the signal indicative of the payload weight, and send compliance commands to adjust compliance of the ride control circuit based on the signal indicative of the payload weight
Implementation Method 4
the load sensitive ride system can also include a tire inflation system configured to adjust the tire pressure of the tire of the vehicle
Implementation Method 5
the comfort and performance of a vehicle ride can be affected by the tire pressure of the vehicle. These systems can reduce fore and aft rocking motion and bouncing of the machine as the ride control and tire inflation systems will help absorb some of the energy created by the inertial forces of the machine and the payload
Data Source
AI summary
A load sensitive ride system and method is disclosed for a vehicle with an implement movably attached by a boom cylinder. The system includes a payload weight measuring system that measures payload weight and generates a signal indicative of the payload weight, a ride control circuit that adjusts hydraulic flow to and from the boom cylinder; and a controller that receives the signal indicative of the payload weight, and sends compliance commands to adjust ride control compliance based on the signal indicative of the payload weight. The system can include a tire inflation system that adjusts tire pressure. The controller can send inflation commands to adjust tire pressure based on the signal indicative of the payload weight. The compliance commands can depend on the components and compliance adjustment methods of the ride control circuit.