Work Vehicle Engine Control Dynamic Power Profile Fitting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional engine control systems for work vehicles face challenges in maintaining engine performance and operator satisfaction under extreme environmental conditions, as they often reduce engine power output and disable the power boost function, leading to decreased drivability and productivity.
Innovation Solution
The implementation of a work vehicle engine control system that operates in an enhanced engine protection (EP) mode, generating dynamically-adjusted power profiles by fitting default profiles beneath a moving EP ceiling, allowing the engine to maintain a consistent behavior with standard conditions while reducing wear and preserving the power boost function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional engine control systems reduce engine power output under extreme environmental conditions, then engine wear is reduced, but operator satisfaction and drivability deteriorate
Solution Approach 1:
The system dynamically adjusts the power profile by repeatedly fitting the default profile shape beneath a moving EP ceiling based on real-time engine operating conditions. This allows the power output to be continuously optimized to maximize performance while staying within safe operational limits, resolving the contradiction between reducing wear and maintaining drivability.
Solution Approach 2:
The system changes the power output parameters by scaling the default power profile to fit within the dynamically determined EP ceiling. This parameter adjustment allows the engine to operate at higher power levels when conditions permit, improving operator satisfaction while still protecting the engine under extreme conditions.
2Reliability
If conventional engine control systems disable the power boost function under extreme environmental conditions, then engine protection is improved, but productivity deteriorates
Solution Approach 1:
The system dynamically determines whether to enable or disable the power boost function based on real-time fitting of the power profile beneath the EP ceiling. This dynamic decision-making allows the power boost function to remain available when engine conditions permit, maintaining productivity while ensuring engine protection when necessary.
Solution Approach 2:
The system adjusts the power profile parameters to accommodate the power boost function under extreme environmental conditions by repeatedly fitting the modified profile beneath the moving EP ceiling. This allows productive power boosting while maintaining engine protection through continuous parameter optimization.
3Reliability
If conventional engine control systems use fixed power reduction strategies, then engine wear is reduced, but adaptability to varying operating conditions deteriorates
Solution Approach 1:
The system employs dynamic power profiling that repeatedly fits the default profile shape beneath a moving EP ceiling based on real-time engine operating conditions. This dynamic approach allows the power reduction strategy to adapt continuously to varying operating conditions, maintaining engine protection while improving adaptability compared to fixed strategies.
Data Source
AI summary
Work vehicle engine control systems operable in enhanced engine protection (EP) modes, and associated methods and program products, include a memory storing a first default power profile having a first profile shape as expressed on a power/speed graph, which plots power output and engine speed along vertical and horizontal axes, respectively. A controller architecture is coupled to the memory and is operable in the enhanced EP mode in which the controller architecture: (i) generates a first dynamically-adjusted power profile by repeatedly fitting the first profile shape beneath a moving EP ceiling as expressed on the power/speed graph; (ii) utilizes the first dynamically-adjusted power profile to determine a power output target (POTAR) corresponding to a current speed of the work vehicle engine; and (iii) schedules the power output of the work vehicle engine in accordance with the power output target (POTAR).