Off-Road Vehicle Speed Control Assembly with Tire Pressure Adaptation
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Solution Overview
Problem
Off-road vehicles with reduced tire pressure lack effective speed control mechanisms to limit maximum speed during off-road operations, posing safety and control challenges.
Innovation Solution
An off-road vehicle speed control assembly comprising a speed sensor, tire pressure sensors, and an electronic controller that operates in different modes to restrict vehicle speed when tires are deflated, ensuring safe operation by limiting speed to predetermined off-road speed limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tire pressure is reduced for off-road operation, then off-road performance and traction are improved, but vehicle speed becomes uncontrolled and exceeds safe limits
Solution Approach 1:
The system dynamically adjusts speed limits based on tire pressure levels. When tire pressure sensors detect reduced pressure indicating off-road mode, the electronic controller automatically applies a speed limit. When normal tire pressure is detected, the speed limit is removed. This dynamic adaptation resolves the contradiction by making speed control responsive to operational conditions.
Solution Approach 2:
The system uses feedback from tire pressure sensors to continuously monitor tire inflation status and automatically adjusts speed control accordingly. The electronic controller receives real-time pressure data and modifies speed limits based on whether tires are inflated for highway or deflated for off-road operation, creating a closed-loop control system that resolves the speed control issue.
2Adaptability or versatility
If tire pressure is reduced to improve off-road capability, then traction and terrain adaptability increase, but safety control mechanisms are compromised
Solution Approach 1:
The system performs preliminary action by pre-establishing safe speed limits that are automatically applied when off-road conditions are detected through tire pressure reduction. Rather than waiting for unsafe conditions to develop, the system proactively limits speed before hazards can occur, maintaining safety control while preserving off-road capability.
Solution Approach 2:
The system provides self-service safety control by automatically detecting off-road mode through tire pressure sensors and independently applying appropriate speed limits without requiring driver intervention. This autonomous safety mechanism ensures reliable control while maintaining full off-road operational capability.
Data Source
AI summary
An off-road vehicle speed control assembly that includes a speed control device, a speed sensor, tire pressure sensors and an electronic controller. The speed control device controls speed of a vehicle power plant. The electronic controller is in electronic communication with the speed control device, the speed sensor and the plurality of tire pressure sensors and is configured to operate the speed control device in at least two different modes of operation: a normal mode in which the plurality of tires are inflated to a high-speed tire pressure; and, a first off-road mode in which the plurality of tires are inflated to a first off-road tire pressure that is less than the high-speed tire pressure. In the normal mode, speeds of the vehicle are unrestricted by the electronic controller. In the first off-road mode, speed of the vehicle is restricted.