Dynamic Engine Throttle Curves for Fast RPM Sweet Spot Control
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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, leading to inefficiencies and increased user effort, particularly due to fixed throttle increments that do not account for varying RPM speeds.
Innovation Solution
Dynamic power curve throttling, which allows throttle increments to vary based on RPM, enabling quick movement to the sweet spot and providing high throttling resolution within that range by using a graphical user interface to alter a linear throttling line into a non-linear dynamic throttling line, generating a table with dynamic throttle increments for engine control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed incremental RPM throttle adjustments are used, then the throttle control mechanism is simple, but more throttle adjustments are required to reach the RPM ideal range or sweet spot
Solution Approach 1:
The patent implements dynamic throttle adjustments where the incremental RPM value changes based on the current operating conditions and distance to the sweet spot. The controller automatically adjusts the throttle increment size, transitioning from larger increments when far from the target to smaller increments when approaching it, thereby reducing the total number of adjustments needed while maintaining operational simplicity.
Solution Approach 2:
The system changes the throttle increment parameter dynamically based on the engine's current RPM and the target sweet spot. Instead of using a fixed increment, the controller modifies the increment size as a function of the current state, enabling faster convergence to the optimal operating range without requiring complex manual intervention.
2Measurement precision
If smaller incremental RPM value is used, then the throttling resolution is higher, but more throttle adjustments (e.g., throttle presses or rotations) will then be required to incrementally change the throttle
Solution Approach 1:
The system dynamically adapts the throttle increment size based on the distance to the sweet spot and current operating conditions. When far from the target, larger increments are used to cover more ground quickly; when approaching the target, smaller increments provide fine control. This dynamic adjustment maintains high throttling resolution near the sweet spot while minimizing the total number of adjustments required.
Solution Approach 2:
The throttle adjustment process is segmented into different phases: a coarse adjustment phase using larger increments to reach the vicinity of the sweet spot, and a fine adjustment phase using smaller increments to precisely enter and stabilize within the sweet spot. This segmentation allows the system to balance speed and precision efficiently.
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.