Compressor Cooling Valve for Intake Air Temperature Control
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Solution Overview
Problem
In cooling mechanisms for internal combustion engines, the use of cooling water to cool compressors can cause the temperature of intake air to rise, leading to an expansion of air volume, which reduces the amount of air introduced into the cylinder and deteriorates fuel efficiency.
Innovation Solution
A cooling mechanism with a flow rate adjustment valve that controls the flow rate of cooling water within the compressor, reducing the flow rate when the intake air temperature is lower than the cooling water temperature to prevent air volume expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling water flow rate is increased to cool the compressor, then the compressor temperature is reduced, but the intake air temperature rises and air volume expands, reducing the amount of air introduced into the cylinder and deteriorating fuel efficiency
Solution Approach 1:
The patent applies dynamics by making the cooling water flow rate adjustable rather than fixed. The flow rate adjustment valve dynamically changes the cooling water flow rate based on operating conditions, allowing the system to adapt between cooling performance and fuel efficiency requirements under different operational states
Solution Approach 2:
The patent applies parameter changes by modifying the cooling water flow rate parameter. The flow rate adjustment valve changes this parameter based on the relationship between compressor discharge temperature and cooling water temperature, optimizing the balance between compressor cooling and maintaining intake air quality for fuel efficiency
2Reliability
If cooling water is used to cool the compressor, then the compressor can operate at lower temperatures, but the intake air temperature rises due to heat transfer from cooling water, expanding air volume and reducing combustion efficiency
Solution Approach 1:
The system dynamically adjusts the cooling water flow rate based on real-time temperature conditions. When the compressor discharge temperature is significantly higher than the cooling water temperature, the flow rate is reduced to prevent excessive heat transfer to the intake air, thereby maintaining combustion efficiency while still providing necessary cooling for reliable operation
Solution Approach 2:
The flow rate adjustment valve changes the cooling water flow rate parameter according to the temperature differential between compressor discharge and cooling water. This parameter adjustment optimizes the trade-off between maintaining compressor reliability through cooling and preventing energy loss through excessive heat transfer to intake air
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 approach ensures the optimal amount of air is introduced into the cylinder, thereby preventing fuel efficiency deterioration by managing the cooling water flow rate based on intake air temperature.
Implementation Method 1
a cooling mechanism for cooling a compressor with cooling water of an internal combustion engine
Implementation Method 2
a flow rate adjustment valve configured to control a flow rate of cooling water flowing inside the compressor
Data Source
AI summary
A cooling mechanism 10 includes: a cooling circuit 11; and a compressor cooling path 30 branched from the cooling circuit 11 and joined to the cooling circuit 11 after passing through an inside of a compressor 22. The cooling mechanism 10 includes a flow rate adjustment valve 32 configured to control a flow rate of cooling water flowing inside the compressor 22. The flow rate adjustment valve 32 is configured to make the flow rate of the cooling water flowing inside the compressor 22 when a temperature of intake air at an outlet of the compressor 22 is lower than a temperature of the cooling water lower than the flow rate of the cooling water flowing inside the compressor 22 when the temperature of the intake air at the outlet of the compressor 22 becomes equal to or higher than the temperature of the cooling water.