Engine Throttle Curve Control for Fast Sweet-Spot RPM Tuning
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Solution Overview
Problem
Conventional throttle adjustments for engines and machines require multiple incremental changes to reach the RPM ideal range or sweet spot, often resulting in considerable vibration and the need for precise timing of throttle releases, which can be cumbersome and prone to errors.
Innovation Solution
Dynamic power curve throttling, which varies throttle increments based on RPM, allowing quick movement to the sweet spot and providing high throttling resolution within that range, is achieved through a graphical user interface that alters a linear throttling line into a non-linear dynamic throttling line, generating a table of dynamic throttle increments for use in engine control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional fixed incremental throttle adjustments are used, then the throttle control mechanism is simple, but multiple adjustments are required to reach the RPM sweet spot and precise timing is needed which increases operational complexity
Solution Approach 1:
The patent implements dynamic throttle increments that automatically adjust based on current RPM relative to the target sweet spot. When approaching the sweet spot, the system reduces throttle increment size to enable precise stopping without requiring manual timing intervention. This dynamic adjustment eliminates the need for precise throttle release timing while maintaining simple operation.
Solution Approach 2:
The system continuously monitors current RPM and compares it to the target sweet spot range, then automatically adjusts subsequent throttle increment values based on this feedback. This closed-loop control enables the throttle to self-correct and stop precisely within the sweet spot without requiring user timing skills or complex manual coordination.
2Measurement precision
If smaller throttle increments are used to reach the sweet spot precisely, then throttling resolution is improved, but the number of throttle adjustments required increases which reduces productivity
Solution Approach 1:
The system dynamically adjusts throttle increment size based on proximity to the sweet spot. When far from the target, larger increments are applied to quickly approach the sweet spot range. When near the target, smaller increments are automatically applied to enable precise stopping. This dynamic adjustment achieves high throttling resolution while minimizing the total number of adjustments required.
Solution Approach 2:
The throttle adjustment process uses periodic evaluation of current RPM against the target sweet spot, with the throttle increment size being periodically adjusted based on this evaluation. This periodic adaptation of increment size enables the system to efficiently navigate from far away to precise stopping within the sweet spot.
Data Source
AI summary
The present disclosure generally relates to dynamic power curve throttling. In an exemplary embodiment, a computer-implemented method for enabling dynamic throttling of an engine includes graphically displaying a graph of a linear throttle line for the engine including an idle speed in revolutions per minute (RPM) and one or more operating speeds in revolutions per minute; using a graphical user interface to alter the linear throttling line into a non-linear dynamic throttling line; and generating a table based on the non-linear dynamic throttling line, the table including dynamic throttle increments that vary based on RPM and that are usable by a controller for dynamic throttling of the engine.