Water Injector Control for Engine Cooling
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Solution Overview
Problem
Conventional water injectors for engines fail to maintain an efficient cooling effect due to water temperature rise and insufficient water pressure, leading to unstable engine operation and reduced efficiency.
Innovation Solution
A method of controlling a water injector that includes detecting water pressure and temperature, stopping the pump when preset conditions are met, and replacing water with new water from a storage tank to maintain the water within a preset temperature range, ensuring immediate and effective water injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water is supplied continuously to the water injector, then the cooling effect is maintained, but the water temperature rises above the preset range reducing cooling efficiency
Solution Approach 1:
The water supply pump operates periodically rather than continuously. The controller stops the pump when water pressure reaches a preset reference value and restarts it when pressure drops, creating periodic action that prevents water temperature rise while maintaining cooling effectiveness through intermittent replenishment of cold water from the storage tank
Solution Approach 2:
The system uses water pressure detection as feedback to control the water supply pump operation. The detection unit monitors water pressure in the supply pipe and sends signals to the controller, which adjusts pump operation accordingly - stopping when pressure reaches reference value and restarting when it drops, creating a closed-loop feedback system that maintains water temperature within preset range
2Stress or pressure
If the water supply pump operates continuously, then water pressure is maintained, but immediate water injection cannot be achieved due to temperature rise
Solution Approach 1:
The system pre-cools water in the storage tank before injection. By maintaining a reservoir of cold water and only pumping when needed based on pressure feedback, the system ensures that water is cooled in advance and ready for immediate injection when required, achieving both pressure maintenance and injection speed
Solution Approach 2:
The water supply pump operates periodically based on pressure detection feedback. When pressure drops below the reference value, the pump restarts to replenish water; when pressure reaches the reference value, the pump stops. This periodic operation maintains adequate water pressure while enabling immediate injection of cooled water
3Use of energy by moving object
If the water supply pump is stopped to save energy, then water temperature rises, but if it operates continuously, energy consumption increases
Solution Approach 1:
The water supply pump operates periodically based on water pressure feedback rather than continuously. The controller monitors pressure and stops the pump when the reference value is reached, restarting only when pressure drops. This periodic operation significantly reduces energy consumption while preventing water temperature rise through intermittent replenishment of cold water from the storage tank
Solution Approach 2:
The system uses the engine's own operation to drive the water supply pump, making the cooling system self-powered. The pump is activated only when needed based on pressure feedback, allowing the system to regulate its own water supply and temperature without external energy input, reducing overall energy consumption while maintaining cooling effectiveness
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables immediate waterjet operation and maintains water temperature within a preset range, ensuring efficient engine cooling and operation by effectively controlling the water injection pump and water supply system.
Implementation Method 1
a water supply pump, a water supply pipe configured to supply the water to the water injector
Implementation Method 2
a water injector configured to inject the water into the combustion chamber of the engine
Implementation Method 3
a detection unit configured to detect water pressure applied to a water supply pipe and a temperature of the water within the water supply pipe
Implementation Method 4
the controller configured to stop an operation of a water supply pump when the data detected by the detection unit reaches a preset reference value
Implementation Method 5
to control an operation of the water supply pump so that the water within the water supply pipe is returned to a water storage tank and new water is supplied to the water supply pipe from the water storage tank when a temperature of the water deviates from a preset range
Data Source
AI summary
Disclosed herein are a method of controlling a water injector for immediate water injection and an engine driven by the method. A method of controlling an operation of a water injector for injecting water into the combustion chamber of an engine to which a turbo system for increasing the amount of air by pressing air has been applied includes detecting water pressure applied to a water supply pipe for supplying water to the water injector, stopping an operation of a water supply pump when the detected data reaches a preset reference value, detecting a temperature of water within the water supply pipe for supplying the water to the water injector, and returning the water within the water supply pipe to a water storage tank and driving the water supply pump to supplying new water to the water supply pipe when the detected data deviates from a preset range.