Forest Harvester Engine Speed Feedback for Power Level Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Forest work machines, such as harvester engines, experience inefficiencies due to operators failing to adjust power levels in response to changing load conditions, leading to suboptimal fuel economy and productivity, especially when dealing with varying tree stem sizes and volumes.
Innovation Solution
A method that automatically measures and compares the engine's rotational speed to predetermined guidelines, notifying the operator of deviations and recommending power level changes through control electronics to maintain optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operator manually adjusts power levels based on changing load conditions, then the operator can respond to varying tree stem sizes and volumes, but the operator may fail to adjust power levels timely or accurately, leading to suboptimal fuel economy and productivity
Solution Approach 1:
The system continuously monitors engine rotational speed and compares it to predetermined guidelines, providing feedback to the operator when deviations occur. This closed-loop feedback mechanism enables timely detection of suboptimal power level selection and prompts appropriate adjustments, resolving the contradiction between manual adaptability and operational efficiency.
Solution Approach 2:
The patent replaces manual operator judgment and adjustment with an automated electronic monitoring and notification system. The control electronics automatically measure rotational speed, compare it to guidelines, and notify the operator, substituting human decision-making with an objective electronic system that eliminates delays and inaccuracies in power level adjustment.
2Speed
If the engine operates at higher power levels to handle varying loads, then the engine can maintain speed under heavy load, but fuel consumption increases
Solution Approach 1:
The system enables dynamic adjustment of power levels by continuously monitoring engine rotational speed and notifying the operator when deviations from guidelines occur. This allows the engine to operate at the minimum necessary power level for current load conditions while maintaining speed, rather than operating continuously at high power levels, thus reducing fuel consumption while preserving speed when needed.
Solution Approach 2:
The patent changes the operational parameter of power level selection based on real-time engine rotational speed measurements. By comparing actual speed to predetermined guidelines and prompting power level adjustments, the system optimizes the power parameter to match actual load requirements, preventing excessive fuel consumption while maintaining adequate speed for handling varying tree stem sizes and volumes.
3Use of energy by moving object
If the engine operates at lower power levels to conserve fuel, then fuel economy improves, but the engine speed droops under heavy load
Solution Approach 1:
The monitoring system provides continuous feedback on engine rotational speed, alerting the operator when speed deviates from predetermined guidelines. This enables the operator to maintain lower power levels for fuel economy while immediately correcting speed droop when it occurs, achieving an optimal balance between fuel consumption and speed maintenance under varying load conditions.
Data Source
AI summary
The method for controlling a forest harvester includes measuring, when carrying out an operation, rotational speed of an engine; automatically determining, in a control electronics, a relative or absolute difference between the measured rotational speed of the engine and a predetermined guideline for the rotational speed of the engine, the guideline defining a preferred rotational speed or a range of preferred rotational speeds for the operation that is being carried out; and automatically notifying, by the control electronics, an operator of the forest harvester, that the determined difference either follows the guideline or the determined difference deviates from the guideline. The engine being adapted to deliver predetermined power levels during the operation.