Engine Speed Control for Fuel Use Under Variable Load
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Solution Overview
Problem
Existing engine control methods using multiple gear positions and fixed rotational speeds struggle to maintain optimal oil consumption under varying load conditions, leading to suboptimal performance and user experience.
Innovation Solution
An oil consumption self-optimization control method that determines a central operating point and target rotational speed based on actual operating points, using a preset oil consumption model to adjust engine speed for optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple gear positions and fixed rotational speed mode are used, then the engine can operate at predetermined speeds, but it cannot adapt to varying load conditions to maintain optimal oil consumption
Solution Approach 1:
The patent applies dynamics by transitioning from fixed rotational speed modes to dynamic rotational speed adjustment. The controller continuously monitors actual operating points and dynamically adjusts the rotational speed to match varying load conditions, enabling the engine to operate at optimal points across different operating conditions rather than being locked into predetermined speeds.
Solution Approach 2:
The patent implements feedback by continuously acquiring actual operating points (rotational speed and torque detection values) and using this information to determine central operating points and target rotational speeds. The controller compares actual performance with target values and adjusts operational parameters accordingly, creating a closed-loop control system that adapts to varying conditions and optimizes oil consumption.
2Loss of energy
If fixed rotational speed mode is used for each gear position, then the control system is simple, but it cannot ensure optimal oil consumption under different operating conditions
Solution Approach 1:
The patent applies self-service by enabling the engine control system to automatically determine optimal operating points and adjust rotational speeds without requiring complex external intervention. The controller autonomously acquires operating data, calculates central operating points, determines target rotational speeds based on oil consumption models, and executes adjustments, making the system self-regulating and adaptive to varying conditions.
Solution Approach 2:
The patent implements parameter changes by continuously adjusting the rotational speed parameter based on monitored operating conditions. Rather than maintaining fixed speeds, the system changes the rotational speed parameter dynamically to match actual load requirements, using detected rotational speed and torque values to determine optimal operating points and adjust parameters accordingly.
3Ease of operation
If the engine operates at central operating point derived from actual operating points, then the control responds to actual conditions, but it may not always achieve target oil consumption levels
Solution Approach 1:
The patent applies preliminary action by pre-establishing oil consumption models that characterize the relationship between rotational speed, torque, and oil consumption before actual operation occurs. These models are used to determine target rotational speeds in advance based on predicted operating conditions, allowing the system to proactively adjust to achieve optimal oil consumption rather than reacting after suboptimal operation occurs.
Solution Approach 2:
The patent replaces traditional mechanical control mechanisms with electronic control and calculation systems. Instead of relying on mechanical linkages or fixed mechanical characteristics to control operational points, the system uses electronic sensors to detect operating parameters, electronic calculations to determine optimal points, and electronic actuators to adjust rotational speeds, enabling more precise and adaptive control.
Data Source
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AI summary
The present invention relates to the field of engineering machinery, and provides an oil consumption self-optimization control method and apparatus and a work machine. The method includes: acquiring a plurality of actual operating points of an engine within a preset duration under a current gear position; determining a central operating point of the engine based on the rotational speed detection values and the torque detection values of the plurality of actual operating points; determining a target oil consumption area of the engine based on a preset oil consumption model as well as the rotational speed detection values and torque detection values of the plurality of actual operating points, and determining an oil consumption corresponding to the central operating point based on the preset oil consumption model; and if the oil consumption corresponding to the central operating point fails to meet the target oil consumption area, determining a candidate rotational speed of the engine based on the target oil consumption area, and determining a target rotational speed of the engine based on the candidate rotational speed and a maximum power point in the plurality of actual operating points.