Implement-Aware Vehicle Speed Control for Creep Stall Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing automatic vehicle speed control systems fail to ensure that implements on heavy equipment vehicles operate within an optimal operating range, particularly in creep mode, leading to reduced performance and potential stall due to changing ground conditions.
Innovation Solution
An automatic vehicle speed control system that includes a controller to set and adjust the vehicle speed based on operating conditions of the implement, detecting stall conditions and automatically adjusting the vehicle's speed or direction to maintain optimal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a predetermined maximum speed is set in creep mode, then the vehicle speed is limited to prevent implement stall, but the implement may operate outside the optimal operating range when ground conditions change
Solution Approach 1:
The system dynamically adjusts the vehicle speed by transitioning between creep mode and drive mode based on real-time monitoring of implement operating conditions. When the implement operates within the optimal range, the vehicle maintains creep mode with predetermined speed limitation. When ground conditions change causing the implement to operate outside the optimal range, the system automatically transitions to drive mode to adjust speed and restore optimal operating conditions.
Solution Approach 2:
The system continuously monitors implement operating conditions (such as hydraulic pressure, rotational speed, or load sensors) and uses this feedback to determine whether the implement is operating within the optimal operating range. Based on this feedback, the controller automatically adjusts the vehicle speed by switching between creep and drive modes, ensuring the implement maintains optimal performance while preventing stall conditions.
2Productivity
If the vehicle speed is automatically adjusted to maintain optimal implement operation, then the implement performance is improved, but the system complexity increases
Solution Approach 1:
The controller serves multiple functions: it manages the creep mode speed limitation, monitors implement operating conditions through various sensors, determines when the implement operates outside the optimal range, and automatically transitions between creep and drive modes. This multi-functional approach consolidates the control system rather than adding separate dedicated systems for each function.
Solution Approach 2:
The system automatically monitors its own operational status through sensors and self-adjusts the vehicle speed by transitioning between modes without requiring external intervention. The controller continuously evaluates implement conditions and autonomously makes control decisions, reducing the need for complex manual control systems or additional operator actions.
Data Source
AI summary
An automatic vehicle speed control system for use in a vehicle having an implement is disclosed. The automatic vehicle speed control system includes: a controller configured to: set a speed of the vehicle to a creep setting; monitor one or more operating conditions of the implement; and automatically adjust the speed of the vehicle based on the one or more operating conditions of the implement.