Reducing Agent Dosing Module Cooling Device With Bubble Discharge

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Solution Overview

Problem

Existing cooling devices for reducing agent dosing modules require separate space for installation and suffer from reduced cooling efficiency due to bubble generation during vaporization, especially when the engine is stopped.

Innovation Solution

A cooling device with a first and second cooling part, where the second part has a larger inner diameter to discharge bubbles and acts as both a flow path and storage for cooling fluid, allowing continuous cooling even when the engine is stopped.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a separate cooling tank is installed to cool the reducing agent dosing module, then the module can be prevented from overheating, but additional installation space is required in the vehicle

Engineering Contradiction:

Improvetemperature of reducing agent dosing moduleVSAvoidinstallation space in vehicle

Core Design Contradiction:

TemperatureVSArea of stationary object

Solution Approach 1:

The cooling tank is merged with the existing exhaust manifold structure, allowing the cooling function to be integrated into the current thermal management system without requiring separate installation space. The exhaust manifold serves dual purposes: exhaust gas routing and cooling fluid storage/ circulation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The cooling device is designed to serve multiple functions: cooling the reducing agent dosing module, utilizing waste heat from exhaust gas, and integrating with the existing exhaust system infrastructure. This multi-functionality eliminates the need for dedicated cooling space.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Temperature

If cooling fluid is supplied to the reducing agent dosing module, then cooling efficiency is improved, but bubbles generated due to vaporization block the cooling part and reduce cooling efficiency

Engineering Contradiction:

Improvecooling efficiencyVSAvoidcooling system operation reliability

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The cooling part is segmented into multiple channels or pathways, allowing bubbles to be directed to specific discharge regions rather than blocking the entire cooling flow. This segmentation maintains cooling efficiency while providing dedicated bubble escape routes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A bubble discharge mechanism or intermediary structure is introduced that facilitates the separation and removal of vaporization bubbles from the cooling fluid stream. This intermediary component prevents bubble accumulation and maintains reliable cooling operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Use of energy by moving object

If the engine is stopped, then fuel consumption is reduced, but the reducing agent dosing module cannot be cooled and overheating occurs

Engineering Contradiction:

Improvefuel consumptionVSAvoidtemperature of reducing agent dosing module

Core Design Contradiction:

Use of energy by moving objectVSTemperature

Solution Approach 1:

The cooling system is designed to retain sufficient cooling fluid in the cooling tank and circulation pathways before engine shutdown. This preliminary storage of cooling fluid allows the system to continue cooling the reducing agent dosing module during engine stop periods without requiring active pumping or additional energy input.

Inventive Principle:

Principle #10Preliminary action

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

Prevents overheating of the reducing agent dosing module by smoothly discharging bubbles and maintaining cooling efficiency without additional space requirements, reducing manufacturing costs.

Implementation Method 1

the cooling fluid contained in the cooling tank flows toward the reducing agent dosing module through the cooling part. Through this, the cooling device for a reducing agent dosing module according to the prior art is implemented such that the cooling fluid supplied through the cooling part cools the reducing agent dosing module

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

the bubbles generated due to the vaporization of cooling fluid supplied to the reducing agent dosing module

Methodology Applied

Scientific EffectVaporization: Evaporation

Data Source

PatentUS12435653B2Cooling device for reducing agent dosing module

Publication Date: 2025.10.07 LS MTRON LTD

AI summary

The present disclosure relates to a cooling device for a reducing agent dosing module, the cooling device including: a first cooling part connected to a reducing agent dosing module; and a second cooling part connected to a cooling fluid line, and configured to receive cooling fluid from the cooling fluid line; wherein the second cooling part is formed to have an inner diameter larger than that of the first cooling part so that the bubbles generated due to the vaporization of cooling fluid are discharged.