Segmented Coolant Control Valve for Engine Temperature Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current engine systems face inefficiencies in cooling the cylinder block and cylinder head, leading to suboptimal coolant temperature management, which affects fuel consumption, engine performance, and occupant comfort, as existing coolant control systems fail to separately and effectively control intake and exhaust side temperatures.
Innovation Solution
An engine system with a coolant control valve that independently manages coolant flow through separate intake and exhaust side jackets in the cylinder head and block, utilizing a coolant pump and valve to distribute coolant to various cooling components based on detected temperatures, ensuring optimal temperature control and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one coolant control valve is used to control multiple cooling elements, then device complexity is reduced, but temperature control precision deteriorates
Solution Approach 1:
The single coolant control valve is segmented into four independent control valves, each dedicated to controlling coolant flow to a specific cooling element (cylinder head intake side, cylinder head exhaust side, cylinder block intake side, cylinder block exhaust side). This segmentation enables precise temperature control for each region while maintaining manageable system complexity through modular design.
2Temperature
If coolant temperature is increased to improve heating performance, then cabin heating efficiency is improved, but engine knocking risk increases
Solution Approach 1:
Different coolant temperatures are maintained in different regions of the engine through independent control valves. The cylinder head regions can be kept at higher temperatures for improved combustion and catalyst activation, while the cylinder block regions are maintained at lower temperatures to prevent knocking and ensure proper lubrication. This local quality differentiation allows simultaneous optimization of heating performance and engine safety.
3Temperature
If coolant flow is increased to improve cooling efficiency, then temperature control is improved, but fuel consumption increases
Solution Approach 1:
The system dynamically adjusts coolant flow rates and temperatures for each cooling element based on real-time operating conditions through independent control valves. During high-load operations, increased coolant flow is directed to specific regions as needed. During low-load operations, coolant flow is reduced to minimize energy consumption. This dynamic control enables optimal balance between cooling efficiency and fuel consumption.
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 enhances cooling efficiency and reduces fuel consumption by allowing precise temperature management of the engine, preventing knocking, maintaining proper lubrication, and improving cabin heating performance.
Implementation Method 1
the coolant absorbs the thermal energy as the coolant circulates through an engine, a heater, and a radiator, and discharges the heat outside of the engine
Implementation Method 2
the coolant absorbs the thermal energy as the coolant circulates through an engine, a heater, and a radiator
Implementation Method 3
discharges the heat outside of the engine
Implementation Method 4
a coolant control valve arranged for independently controlling coolant flowing through the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket and the exhaust side block coolant jacket
Implementation Method 5
a coolant pump for pumping the coolant to flow through the cylinder head and the cylinder block
Implementation Method 6
The coolant supplied to the coolant control valve through the cylinder block and the cylinder head may be supplied to a heater core for cabin heating
Implementation Method 7
an Exhaust Gas Recirculation (EGR) cooler for cooling recycling exhaust gas
Implementation Method 8
a radiator for dispersing heat to the outside
Implementation Method 9
an oil cooler for controlling an oil temperature
Data Source
AI summary
An engine system having a coolant control valve may include a cylinder head including an intake side head coolant jacket for cooling an intake side thereof and an exhaust side head coolant jacket for cooling an exhaust side thereof formed in the cylinder head, a cylinder block arranged on a lower side of the cylinder head and having an intake side block coolant jacket for cooling an intake side of the cylinder block and an exhaust side block coolant jacket for cooling an exhaust side cylinder block formed therein, and a coolant control valve arranged for independently controlling coolant flowing through the intake side head coolant jacket, the exhaust side head coolant jacket, the intake side block coolant jacket and the exhaust side block coolant jacket.