Dosing System Component Carrier Coolant Heating

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Solution Overview

Problem

The existing dosing systems for injecting urea solutions into exhaust gas flows for selective catalytic reduction in internal combustion engines require complex and costly electrical heating to operate below freezing temperatures, increasing system complexity and energy consumption.

Innovation Solution

A component carrier is integrated into the coolant circuit of the internal combustion engine, allowing components of the dosing system to be heated through thermal contact, eliminating the need for separate heating elements and simplifying the system structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If electrical heating elements are used to heat dosing system components below freezing temperatures, then the dosing system can operate below −11°C, but the system complexity and engineering cost increase significantly

Engineering Contradiction:

Improveoperating temperatureVSAvoidsystem complexity

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The dosing system components (pump, lines, valves) are mounted on a common component carrier that serves as an integrated heating unit. The carrier combines multiple functions: structural support, thermal management through integrated heating elements, and fluid distribution channels. This merging eliminates the need for separate heating components while maintaining below-freezing operation capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The component carrier performs multiple functions simultaneously: it provides mechanical support for dosing components, acts as a thermal management system through integrated heating, and serves as a fluid distribution manifold. This multi-functionality reduces the overall number of separate components needed in the dosing system.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Temperature

If multiple electrical heating elements are used to heat different dosing system components, then operation below freezing is enabled, but the engineering cost increases

Engineering Contradiction:

Improvecomponent temperatureVSAvoidengineering cost

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

Multiple heating functions are merged into a single integrated heating system within the component carrier. Instead of separate heating elements for the pump, lines, and valves, a unified heating structure provides thermal management for all components, reducing material costs and manufacturing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The component carrier serves itself by providing structural support and fluid distribution while simultaneously managing the thermal requirements of all mounted components through its integrated heating system. This self-service approach eliminates the need for external heating systems and reduces overall engineering costs.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If separate heating components are added to the dosing system, then below-freezing operation is achieved, but the system structure becomes more complex

Engineering Contradiction:

Improvetemperature adaptabilityVSAvoidsystem structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The component carrier integrates structural support, fluid distribution, and thermal management functions into a single unified structure. This eliminates the need for separate heating components and simplifies the overall system architecture while maintaining adaptability to below-freezing operating conditions.

Inventive Principle:

Principle #5Merging (Combining)

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 solution reduces system engineering costs and simplifies the dosing system by utilizing exhaust heat for component heating, maintaining functionality below freezing temperatures without the need for electrical heating elements.

Implementation Method 1

the component carrier has at least one contact region for producing thermal contact with a fluid with a higher temperature, especially with the coolant circuit of the internal combustion engine so that the component carrier forms a heat sink and is heated so that the components which are mounted on the component carrier are heated

Methodology Applied

Scientific EffectThermal contact heat transfer: Conduction (thermal)

Data Source

PatentUS9719395B2Component carrier for a dosing system

Publication Date: 2017.08.01 ALBONAIR GMBH

AI summary

A component carrier of a dosing system including a plurality of components for injecting a urea solution into the exhaust gas flow of an internal combustion engine comprises a base plate forming the component carrier, a plurality of inner flow channels integrated into the base plate, and an inlet port and an outlet port connecting the inner flow channels with the coolant circuit of the internal combustion engine. The component carrier is heated by flowing a fluid having an elevated temperature and circulating in the coolant circuit from the inlet port to the outlet port passing through the inner flow channels and transferring the heat from the fluid to the component carrier. The components of the dosing system mounted on the component carrier and in thermal contact with the component carrier are heated by heat transfer from the heated component carrier.