Additive Injection Valve Cooling Device with Flow-Responsive Movable Member
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Solution Overview
Problem
Existing cooling devices for injection valves face inefficiencies due to bubble accumulation from boiling coolant, which reduces cooling efficiency, especially when the coolant flow rate is low, and may not optimize cooling performance at higher flow rates.
Innovation Solution
A cooling device with a movable member that communicates or disconnects passages based on coolant flow rates, allowing bubbles to escape at lower rates and maximizing coolant flow to the injection valve tip at higher rates, using a throttle mechanism to regulate passage areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the coolant flow rate is low, then energy consumption is reduced, but bubble accumulation occurs which reduces cooling efficiency
Solution Approach 1:
The patent employs a movable member that dynamically changes the passage configuration based on coolant flow rate. At low flow rates, the movable member positions to open a communication passage between the first and second passages, allowing bubbles to escape. At high flow rates, the movable member shifts to close this communication passage, directing all coolant to the tip portion for maximum cooling effect. This dynamic adaptation resolves the contradiction by maintaining cooling efficiency across varying flow conditions without increasing energy consumption.
Solution Approach 2:
The system changes the flow distribution parameter based on coolant flow rate conditions. The movable member responds to flow rate changes by altering the effective passage configuration, thereby changing how coolant is distributed between different paths. This parameter change allows the system to optimize cooling performance at each operating condition without requiring additional energy input.
2Reliability
If the coolant flow rate is high, then cooling efficiency is improved, but bubble accumulation may occur and passage optimization is reduced
Solution Approach 1:
The movable member provides dynamic adaptation by automatically adjusting the passage configuration in response to coolant flow rate changes. When flow rate is high, the movable member closes the communication passage between the first and second passages, ensuring all coolant flows to the tip portion for optimal cooling. This dynamic response maintains passage optimization across different operating conditions without compromising cooling efficiency.
Solution Approach 2:
The system incorporates implicit feedback through the movable member that responds to coolant flow rate conditions. The flow rate itself acts as the feedback signal that triggers the movable member to adjust the passage configuration appropriately. This feedback mechanism ensures the system automatically optimizes coolant distribution based on actual operating conditions, maintaining adaptability across varying flow rates.
3Device complexity
If a fixed passage configuration is used, then device complexity is reduced, but cooling efficiency varies with flow rate conditions
Solution Approach 1:
The patent introduces a movable member that adds minimal complexity to enable dynamic passage configuration adjustment. This single movable component allows the system to adapt coolant distribution based on flow rate conditions, significantly improving cooling efficiency across different operating scenarios. The added complexity is justified by the substantial gain in reliability and performance adaptability.
Solution Approach 2:
The movable member operates autonomously based on coolant flow rate conditions without requiring external control systems. The flow rate itself drives the movable member to the appropriate position, making the system self-regulating. This self-service approach maintains relatively simple device architecture while achieving adaptive cooling optimization across varying operating conditions.
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
The device effectively prevents bubble accumulation and maintains high cooling efficiency by adapting passage communication based on coolant flow rates, ensuring efficient cooling of the injection valve tip regardless of flow conditions.
Implementation Method 1
a movable member configured to move in response to a flow of the coolant within a height between the first port and the second port
Implementation Method 2
a cooling device configured to cool, using a coolant, an injection valve that injects an additive
Implementation Method 3
a first passage connected to the first port and extending to an outer periphery of a tip portion of the injection valve
Data Source
AI summary
A cooling device includes: a first port into which coolant flows; a first passage connected to the first port and extending to a periphery of a tip portion of an injection valve; a second port provided above the first port, through which the coolant flows out; a second passage connected to the first passage and extending from the periphery of the tip portion and connected to the second port; and a movable member configured to move in response to a flow of the coolant within a height between the first port and the second port to communicate the first passage and the second passage with each other when a flow rate of the coolant is lower than a predetermined flow rate and to disconnect the first passage and the second passage from each other when the flow rate of the coolant is higher than the predetermined flow rate.