Reservoir Tank Integrated Ejector Turbo Gas Cooling
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Solution Overview
Problem
In vehicle cooling systems, high-temperature gases from the turbo-side water jacket are drawn into the pressurized reservoir tank when the engine is off, causing the coolant temperature to exceed safe limits, leading to tank deterioration and bubbling noise, due to the lack of coolant circulation and resulting vaporization.
Innovation Solution
A reservoir tank with an integrated ejector that cools high-temperature gases using the coolant before they enter the tank, comprising a tank body with an ejector that includes passages, a nozzle, and a guide tube to mix and cool the gases with low-temperature coolant, reducing the temperature and minimizing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the vehicle starting system is in key off state and the water pump does not operate, then the coolant does not circulate and the turbocharger continues to generate heat, but the coolant remaining in the turbo-side water jacket vaporizes producing high-temperature gases that exceed the maximum coolant temperature management limit
Solution Approach 1:
The ejector cools the high-temperature gases produced in the turbo-side water jacket before they are drawn into the reservoir tank through the degassing line. This preliminary cooling action prevents the gases from raising the coolant temperature in the reservoir tank above the maximum management limit of 110°C, thereby maintaining reliable temperature management even when the water pump is not operating.
2Object-generated harmful factors
If high-temperature gases are drawn into the reservoir tank through the degassing line, then degassing is performed, but the coolant temperature exceeds the maximum coolant temperature to be managed while driving
Solution Approach 1:
The ejector acts as an intermediary device between the turbo-side water jacket and the reservoir tank. It introduces low-temperature coolant from the reservoir tank into the degassing line to mix with and cool the high-temperature gases before they enter the reservoir tank. This intermediary cooling action allows effective degassing while preventing the coolant temperature from exceeding the maximum management limit.
3Object-generated harmful factors
If high-temperature gases are drawn into the reservoir tank, then degassing occurs, but the reservoir tank deteriorates and bubbling noise is generated
Solution Approach 1:
The ejector performs preliminary cooling of the high-temperature gases before they enter the reservoir tank, preventing the thermal deterioration of the tank material and avoiding the generation of bubbling noise by ensuring gases are cooled to acceptable temperature levels before contact with the reservoir tank contents.
4Temperature
If additional electric water pumps are used to prevent high-temperature gases from entering the reservoir tank, then temperature management is improved, but system complexity and cost increase
Solution Approach 1:
The ejector utilizes the existing coolant in the reservoir tank as a cooling medium to cool the high-temperature gases, eliminating the need for additional electric water pumps. The system achieves effective temperature management by leveraging the thermal energy already present in the reservoir tank, thereby reducing system complexity and avoiding increased costs associated with additional pumping components.
5Temperature
If additional electric water pumps are installed to cool high-temperature gases, then temperature control is improved, but material costs increase
Solution Approach 1:
The ejector system achieves temperature control by utilizing the existing coolant in the reservoir tank, eliminating the need for expensive additional electric water pumps and their associated control systems. This self-service approach reduces material costs while maintaining effective temperature management of the coolant system.
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 integrated ejector effectively cools high-temperature gases, preventing tank deterioration and bubbling noise, allowing the use of less expensive and transparent materials for the reservoir tank, and eliminating the need for additional electric water pumps, thus reducing material costs and improving system efficiency.
Implementation Method 1
an ejector (40) integrally coupled to the tank body (30), wherein the ejector (40) is configured to cool gas produced from a gas source using the coolant contained in the tank body (30) before gas flows into the tank body (30)
Implementation Method 2
a nozzle (45) located between the first passage (41) and the second passage (42)
Data Source
AI summary
A reservoir tank with an integrated ejector, includes: a tank body having a space in which a coolant and a gas are contained; and an ejector integrally coupled to the tank body, wherein the ejector is configured to cool the gas produced from a gas source using the coolant contained in the tank body before the gas flows into the tank body.