Cooling Water Control Valve with Electronic and Thermosensitive Segmentation
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Solution Overview
Problem
The existing cooling water control systems for engines, which use separate valves for the cylinder head and cylinder block, are costly and prone to operational delays when one valve becomes inactive, leading to potential engine overheating due to temperature detection delays.
Innovation Solution
A single cooling water control valve apparatus that independently controls flow rates in two lines using a combination of an electronic control valve and a thermosensitive valve, allowing for precise temperature control and reducing costs by eliminating the need for multiple fail-safe mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate cooling water control valves are arranged for the cylinder head and cylinder block, then temperature control precision is improved, but device complexity and cost increase
Solution Approach 1:
The single cooling water control valve is segmented into two independent control mechanisms: an electronic control valve for precise flow rate adjustment and a thermosensitive valve for temperature-based fail-safe operation. This segmentation allows the system to achieve temperature control precision comparable to dual-valve systems while maintaining device simplicity and cost-effectiveness through a unified valve structure.
2Reliability
If separate cooling water control valves are arranged for the cylinder head and cylinder block, then temperature control reliability is improved, but cost increases
Solution Approach 1:
The patent merges the functions of two separate cooling water control valves into a single integrated valve apparatus. The electronic control valve and thermosensitive valve operate independently within the same valve body, providing redundant temperature control capability and fail-safe protection without the cost and complexity of two separate valve assemblies.
Solution Approach 2:
The thermosensitive valve provides automatic fail-safe operation based on temperature detection, eliminating the need for complex control systems or additional safety mechanisms. When the electronic control valve fails or cooling water temperature exceeds the set value, the thermosensitive valve automatically opens to ensure safe cooling water circulation, providing self-service reliability protection.
3Reliability
If a thermal safety device is arranged in a branched passage, then fail-safe protection is improved, but temperature detection delay occurs
Solution Approach 1:
The thermosensitive valve acts as an intermediary safety mechanism that directly monitors cooling water temperature at the valve inlet. By positioning the temperature detection function within the main valve body rather than in a branched passage, the system achieves immediate temperature detection and response, eliminating the time delay associated with thermal conduction to remote sensing locations.
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 solution enables cost-effective, real-time temperature control of cooling water in both the cylinder head and cylinder block, preventing engine overheating and improving fuel efficiency by maintaining optimal engine temperatures.
Implementation Method 1
a thermosensitive valve which is arranged at a second passage communicated with the other of inlet ports and which adjusts a flow rate of cooling water flowing through the second passage owing to displacement of a temperature detecting medium with temperature
Data Source
AI summary
A cooling water control valve apparatus capable of independently controlling flow rates of cooling water in two lines with a single apparatus for cooling water control and capable of achieving cost reduction.A cooling water control valve apparatus which adjusts a flow rate of cooling water for cooling an object to be cooled includes two inlet ports through which cooling water is introduced, an electrical control valve which is arranged at a first passage communicated with one of the inlet ports and which adjusts a flow rate of cooling water flowing through the first passage with electronic control, and a thermosensitive valve which is arranged at a second passage communicated with the other of inlet ports and which adjusts a flow rate of cooing water flowing through the second passage owing to displacement of a temperature detecting medium with temperature.