Auxiliary Power Control in Engine-Driven Welding Apparatus
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Solution Overview
Problem
Engine-driven welding-type apparatuses inefficiently utilize engine power as they often operate at full speed to maintain auxiliary output, leading to increased fuel consumption, noise, and wear, due to limitations in controlling auxiliary power based on engine operational parameters.
Innovation Solution
A system and method that includes a controller to monitor engine speed and adjust auxiliary output power based on detected loads and engine conditions, ensuring the engine operates at optimal speed to deliver required power, thereby maximizing power utilization and preventing overloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the engine operates at full speed to maintain auxiliary output power, then the auxiliary power delivery is sufficient, but fuel consumption increases and engine wear increases
Solution Approach 1:
The patent implements dynamic control of the auxiliary output based on real-time engine operating parameters. The controller continuously monitors engine speed, torque, and power output, and dynamically adjusts the auxiliary power delivery to match the engine's current capability. This allows the system to operate at lower speeds when full power is not needed, reducing fuel consumption while maintaining sufficient power delivery when required.
Solution Approach 2:
The system changes operational parameters by adjusting the auxiliary output power level based on engine operating conditions. When the engine operates at lower speeds or under reduced load, the controller automatically reduces the auxiliary power delivery proportionally. This parameter adjustment ensures that the auxiliary output never exceeds what the engine can currently provide, eliminating the need to run the engine at full speed continuously.
2Power
If the engine operates at full speed to maintain auxiliary output, then adequate power is provided to auxiliary loads, but engine noise increases
Solution Approach 1:
The dynamic control system monitors engine operating parameters and adjusts auxiliary power delivery in real-time. When the engine operates at lower speeds, the system proportionally reduces auxiliary power output, thereby operating the engine in quieter conditions while still meeting power demands. This dynamic adjustment eliminates the need to maintain full engine speed for noise-free operation.
3Reliability
If the auxiliary output is controlled based on worst case engine output, then load pickup from idle is ensured, but the entire range of engine power capability is not utilized
Solution Approach 1:
The system employs feedback control by continuously monitoring actual engine operating parameters (speed, torque, power) and using this information to adjust auxiliary output power. This feedback mechanism allows the system to respond to current engine capabilities rather than relying on predetermined worst-case scenarios. The controller calculates the maximum available power based on real-time measurements and adjusts auxiliary output accordingly, enabling both reliable load pickup and efficient use of the entire engine power range.
Solution Approach 2:
The system changes the control parameter from a fixed worst-case power limit to a dynamic parameter based on actual engine operating conditions. By continuously measuring engine speed and torque, the controller adjusts the auxiliary power limit to match current capabilities, allowing the system to operate efficiently across the full power range while maintaining reliability.
4Power
If a robust engine is associated with the generator to operate at peak horsepower, then maximum power is available, but the size and mass of the engine increases
Solution Approach 1:
The system changes the operational parameters by utilizing the entire power-torque curve of a smaller engine through dynamic control. Instead of relying on a large engine operating only at peak horsepower points, the controller adjusts auxiliary power delivery to match the smaller engine's varying capabilities across different speeds and loads. This allows a smaller, lighter engine to deliver the same effective maximum power when needed while operating efficiently at lower power levels during normal operation.
Data Source
AI summary
A system and method of controlling available power of an auxiliary output of a welding-type power source is disclosed. The welding-type power source is configured to supply power to a variable combination of a welding-type output and the auxiliary output and includes a controller configured to detect a load on the auxiliary output. The controller is configured to monitor an engine operating parameter of the welding-type power source and to limit the amount of power provided to the auxiliary output to an amount of power capable of being generated by the engine at a current engine condition.