Integrated Coolant Pump Module Thermostat Placement
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Solution Overview
Problem
Internal combustion engines face inefficiencies in coolant circulation and thermal management due to conventional thermostat placement and pressure drop issues, leading to potential thermal shock and increased system pressure.
Innovation Solution
A coolant pump module with an integrated thermostat positioned upstream of the pump inlet, facilitating consistent coolant flow temperature and reducing pressure drops, while incorporating separate passages for coolant and EGR gas flows, and a mixing chamber to minimize turbulence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the thermostat is positioned downstream of the pump inlet (conventional placement), then the pump can draw coolant from the engine, but the coolant flow temperature becomes inconsistent and pressure drops increase
Solution Approach 1:
The thermostat is positioned upstream of the pump inlet to perform temperature regulation before the coolant enters the pump. This preliminary action ensures that the coolant temperature is consistent when it reaches the pump, preventing thermal shock and reducing pressure drops in the system.
2Reliability
If separate passages for coolant and EGR gas flows are not incorporated, then the device structure remains simple, but thermal shock occurs due to inconsistent coolant temperature
Solution Approach 1:
The coolant pump module incorporates separate passages for coolant flow and EGR gas flow. This segmentation allows independent control and optimization of each fluid path, preventing thermal shock by maintaining consistent coolant temperature while managing ECR gas separately, thereby improving engine reliability without excessive complexity.
3Productivity
If a mixing chamber is not incorporated, then the device structure remains simpler, but turbulence increases leading to reduced cooling efficiency
Solution Approach 1:
A mixing chamber is incorporated as an intermediary component between the separate passages and the pump outlet. This mixing chamber gently combines coolant and EGR gas flows, minimizing turbulence and maintaining cooling efficiency while adding only moderate structural complexity to the module.
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 solution ensures consistent coolant flow temperature, reduces thermal shock, and minimizes system pressure, enhancing engine efficiency and reliability.
Implementation Method 1
The thermostat is configured to regulate a coolant flow into the coolant pump module from the radiator passage in accordance with a fluid temperature
Implementation Method 2
a pump mounted to the module housing for moving a coolant through a cooling circuit of the engine
Implementation Method 3
the coolant absorbs heat from the engine
Implementation Method 4
The coolant can subsequently be circulated through a radiator to dissipate the absorbed heat to the environment
Data Source
AI summary
A coolant pump module for an internal combustion engine is provided. The coolant pump module includes an inlet thermostat and a pump integrated into a single unit. The coolant pump module provides inlet and outlet of coolant to various cooling circuits.