Water Injection Pump Standby Control for Rapid Engine Demand
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Solution Overview
Problem
Existing water injection systems for combustion engines struggle to dynamically respond to sudden increases in engine load, often resulting in delayed water delivery that fails to meet the high demand for water injection, particularly in high-performance conditions.
Innovation Solution
A method and system that dynamically adjust pump performance based on predefined standby conditions, ensuring the water injection system is ready to meet future demands by increasing or maintaining pump performance when necessary, and conserving energy when not needed, using sensors and a control unit to monitor engine parameters and time intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the pump operates at high performance continuously to meet sudden water injection demands, then the water delivery speed and pressure are improved, but energy consumption increases
Solution Approach 1:
The control unit activates the pump in advance based on predicted future water injection demands derived from current engine operating parameters (speed, load, temperature). This preliminary action ensures the pump is already operating at required performance levels before sudden demand occurs, eliminating delivery delays while avoiding continuous high-performance operation.
Solution Approach 2:
The pump performance is dynamically adjusted based on real-time engine operating conditions and predicted demand. The system transitions between different operational states (standby, increased performance, maximum performance) according to actual needs, optimizing the balance between water delivery capability and energy consumption.
2Loss of time
If the pump performance is increased in advance to meet potential future demand, then the response time to sudden engine load increases is improved, but energy consumption increases
Solution Approach 1:
The system performs preliminary assessment of future water injection needs by analyzing current engine parameters (speed, load, temperature) and predicting when water injection will be required. The pump is activated or performance is increased only when prediction indicates imminent demand, achieving fast response without unnecessary energy consumption during low-demand periods.
Solution Approach 2:
The control unit continuously monitors engine operating parameters and uses this feedback to adjust pump performance in real-time. This closed-loop control ensures the pump operates at optimal performance levels based on actual engine needs, responding quickly when demand arises while conserving energy when demand is low or absent.
3Use of energy by moving object
If the pump is deactivated to save energy during low engine load, then energy consumption is reduced, but the system cannot respond quickly to sudden load increases
Solution Approach 1:
Based on predicted future demand analysis of engine parameters, the system activates the pump in advance before sudden load increases occur. This ensures the pump is already running at appropriate performance levels when demand arises, eliminating response delays while avoiding energy waste during periods of confirmed low or no demand.
Solution Approach 2:
The pump operational state is dynamically controlled based on real-time engine conditions and predicted demand. The system transitions between deactivated, standby, and active states according to actual engine needs, achieving optimal balance between energy savings and response capability.
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
Ensures rapid and efficient water delivery to combustion engines, optimizing performance and reducing energy consumption and component wear by maintaining the system in a state of readiness or standby mode when required.
Implementation Method 1
a pump (4) for pumping water from a tank (2) through a feed line (3) to the injector (5)
Implementation Method 2
the water is normally atomized by the injector, i.e. a spray of droplets is formed
Implementation Method 3
This approach has been shown to reduce combustion temperatures
Data Source
AI summary
A method of operating a water injection system for a combustion engine, the system comprising an injector for injecting water at least indirectly into the combustion engine and a pump for pumping water from a tank through a feed line to the injector. In order to improve the dynamic performance of a water injection system for a combustion engine, the invention provides that the method comprises the steps of:determining if there is a current demand for water injection;if there is no current demand, checking at least one predefined standby condition to determine if, starting from a current pump performance, it is possible to meet a potential future demand for water injection; andincreasing the pump performance if at least one standby condition is fulfilled anddecreasing or deactivating the pump if no standby conditions are fulfilled.