EGR Cooler Coolant Control Valve Unit
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Solution Overview
Problem
Engine cooling systems face challenges in maintaining optimal coolant temperatures, leading to increased fuel consumption, friction, and exhaust gas quality issues due to inadequate control over coolant circulation and EGR cooler alignment, which affects the efficiency and durability of engine components.
Innovation Solution
An engine cooling system with a coolant control valve unit and EGR cooler configuration that uses sensors to manage coolant temperatures across various engine components, prioritizing coolant flow to critical areas like the oil warmer and heater, and optimizing EGR cooler alignment to stabilize coolant circulation and reduce condensate water, while recirculating exhaust gas to recover heat and shorten warm-up times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If coolant temperature is not properly controlled, then fuel consumption increases and friction increases, but implementing proper control requires additional valve units and system complexity
Solution Approach 1:
The coolant control valve unit is designed to perform multiple functions: controlling coolant flow to the EGR cooler, managing coolant circulation to the radiator, and regulating temperature distribution across different engine components. This multi-functional design eliminates the need for separate valve units for each function, thereby reducing system complexity while maintaining proper temperature control to reduce fuel consumption and friction.
2Reliability
If EGR cooler alignment is not optimized, then cooling efficiency decreases and condensate water increases, but optimizing alignment requires precise positioning and installation complexity
Solution Approach 1:
The EGR cooler is designed with optimized local alignment and positioning features that ensure proper orientation and connection points. The cooler's structure includes specifically positioned inlet and outlet ports, mounting flanges, and internal flow channels that are locally optimized for efficient exhaust gas cooling. This local quality optimization achieves stable operation and reduced condensate water without requiring complex installation procedures, as the local features guide proper alignment during assembly.
3Loss of time
If coolant circulation is not optimized, then warm-up time increases and cooling efficiency decreases, but optimizing circulation requires complex valve control mechanisms
Solution Approach 1:
The coolant control valve unit incorporates dynamic control capabilities that allow it to adjust coolant flow distribution in real-time based on engine operating conditions. The valve can dynamically switch between different circulation modes: prioritizing flow to the EGR cooler during specific operations, directing flow to the radiator for cooling, or maintaining circulation through the oil warmer and heater. This dynamic adaptability achieves optimized warm-up time and cooling efficiency without requiring multiple fixed-position valve mechanisms, as a single dynamic valve replaces several static control elements.
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 configuration enhances cooling efficiency, reduces fuel consumption, and improves engine performance by maintaining optimal coolant temperatures and stabilizing EGR cooler operation, thereby extending component durability and reducing fuel consumption.
Implementation Method 1
an EGR cooler that is branched from a coolant line between the coolant pump and the cylinder block... A coolant may be circulated to the EGR cooler... stably cooling the EGR gas
Implementation Method 2
a coolant pump that pumps a coolant to a coolant inlet side of the cylinder block
Implementation Method 3
an engine generates torque from combustion of fuel, and discharges exhaust gas. Particularly, an engine coolant absorbs heat energy while circulating the engine and emits the absorbed heat to the outside through a radiator
Data Source
AI summary
An engine cooling system having an EGR cooler is disclosed. The system includes a cylinder head provided on a cylinder block, a coolant pump that pumps a coolant to a coolant inlet side of the cylinder block, an EGR cooler that is branched from a coolant line between the coolant pump and the cylinder block, and is provided in a circulation line through which a coolant is recirculated to an inlet of the coolant pump, and a coolant control valve unit that is provided in a coolant output side of the cylinder head to receive a coolant exhausted from the cylinder head and a coolant exhausted from the cylinder block and controls coolants distributed to coolant parts.