Coolant Control Valve Segmentation for Engine Temperature Precision
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Solution Overview
Problem
Current engine cooling systems face inefficiencies in coolant distribution and bubble removal, leading to increased fuel consumption, knocking, and lubrication issues due to inadequate coolant temperature control and bubble management.
Innovation Solution
An engine system with a coolant control valve device that includes valves for distributing coolant to various cooling elements, a safety valve for bypassing coolant to the radiator, and a degassing box for bubble collection, utilizing a wax chamber and piston mechanism to operate the safety valve and maintain internal pressure for effective bubble removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single coolant control valve controls multiple cooling elements, then device complexity is reduced, but coolant temperature control precision deteriorates
Solution Approach 1:
The patent divides the single coolant control valve into multiple independent control valves, each dedicated to controlling coolant flow to specific cooling elements (engine, radiator, heater, oil cooler). This segmentation allows each valve to precisely control temperature for its designated component, resolving the trade-off between device complexity and temperature control precision.
2Productivity
If coolant is circulated at high pressure, then cooling efficiency improves, but bubble removal becomes difficult
Solution Approach 1:
The patent introduces a degassing box as an intermediary component in the coolant circulation system. This dedicated degassing chamber provides a controlled environment where bubbles can be effectively removed from coolant without compromising the high-pressure circulation needed for cooling efficiency. The degassing box acts as a mediator between the high-pressure cooling system and bubble removal requirements.
3Productivity
If coolant temperature is maintained at high levels, then engine performance improves, but knocking increases and lubrication deteriorates
Solution Approach 1:
The patent applies local quality by providing different coolant temperatures to different engine components through separate control valves. The engine receives coolant at temperatures optimized for performance, while the oil cooler receives coolant specifically tuned to maintain optimal lubrication temperatures. This localized temperature control allows high engine performance without compromising lubrication quality or causing knocking.
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 system effectively controls coolant distribution to maintain optimal temperatures, increases coolant flow to the radiator in high-temperature conditions, and efficiently collects bubbles, thereby improving engine performance and reducing fuel consumption and knocking.
Implementation Method 1
a wax chamber and piston mechanism to operate the safety valve and maintain internal pressure for effective bubble removal
Implementation Method 2
a degassing box for bubble collection
Data Source
AI summary
An engine system having a coolant control valve device may include valves that distribute coolant that is injected into a coolant inflow chamber to coolant demand elements, respectively; a driver that operates each of the valves; a safety valve that bypasses coolant that is operated by a coolant temperature to be injected into the coolant inflow chamber; and a degassing member that collects coolant including a bubble, wherein a degassing passage that is opened or closed by operation of the safety valve is formed.