Electronic Thermostat Split Cooling With Integrated Multi-Valve Control
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Solution Overview
Problem
Conventional engine cooling systems require multiple thermostats to control the flow rate of coolant in the cylinder head and cylinder block, increasing complexity and costs, and complicating flow rate control.
Innovation Solution
An electronic thermostat with multiple valves and a thermosensitive member that controls the flow rate of coolant through various passages, allowing for split cooling of the cylinder head and cylinder block using a single thermostat, with a drive heater to adjust valve operations based on temperature ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple thermostats are used to control coolant flow in cylinder head and cylinder block separately, then split cooling capability is achieved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent combines multiple thermostat functions into a single integrated electronic thermostat unit that controls coolant flow to both the cylinder head and cylinder block. This single unit replaces what would traditionally require multiple separate thermostats, thereby achieving split cooling capability while reducing device complexity and the number of components.
Solution Approach 2:
The electronic thermostat is designed as a multi-functional device that can simultaneously control coolant flow rates to different engine components (cylinder head and cylinder block). This universal thermostat performs multiple cooling control functions that would otherwise require separate dedicated thermostats for each component.
2Manufacturing precision
If multiple thermostats are used to control coolant flow rates in different passages, then precise flow control is achieved, but control complexity increases
Solution Approach 1:
The patent integrates multiple valve control functions into a single electronic thermostat unit with multiple valves (first valve for cylinder head passage, second valve for cylinder block passage). This unified control architecture achieves precise flow rate control for each passage while avoiding the complexity of coordinating multiple independent thermostat control systems.
Solution Approach 2:
The electronic thermostat incorporates sensors and control logic that monitor coolant temperatures in different engine zones and automatically adjust valve positions to maintain optimal flow rates. This feedback mechanism enables precise flow control without requiring complex manual coordination or multiple independent control systems.
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
Simplifies the control of coolant flow rates, reduces manufacturing costs, and improves fuel efficiency and engine performance by allowing simultaneous control of coolant flow in multiple passages, while also reducing friction and enhancing durability.
Implementation Method 1
A thermosensitive member which changes volume according to a temperature change is provided in the valve body
Implementation Method 2
it is possible to provide a drive heater capable of heating the wax therein
Implementation Method 3
controlling the flow rate of the received cooling water supplied to the outside, that is, supplied to a place exposed to ambient air such as via a radiator
Data Source
AI summary
An electronic thermostat, into which cooling water is flowed from a cylinder head of an engine through a first inlet, controls the flow rate of the received cooling water supplied to outside ambient air exposure. The electronic thermostat includes a first valve for controlling the flow rate of the cooling water supplied to a first passage for connecting a first outlet of the electronic thermostat and a water pump and includes a second valve for controlling the flow rate of the cooling water flowing through a second passage for connecting the outlet of a radiator and a cylinder block of the engine.