Engine Block Coolant Baffle for Thermal Consistency

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Solution Overview

Problem

Existing engine block designs face challenges in efficiently distributing and flowing coolant to prevent thermal inconsistencies and damage from warping or deflection, particularly due to inadequate coolant direction within the water jacket.

Innovation Solution

The engine block assembly incorporates a longitudinally extending coolant baffle with sealing shoulders to direct and seal coolant flow within the water jacket, ensuring effective circulation and heat removal by engaging the baffle sealing face with opposed sealing shoulders, enhancing sealing conformity and reducing the risk of coolant leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional water jacket design is used without baffles, then the structure is simple and manufacturing is easy, but coolant flow distribution is inadequate causing thermal inconsistencies

Engineering Contradiction:

Improvecoolant flow distributionVSAvoidwater jacket structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The water jacket is segmented by introducing coolant baffles that divide the coolant flow path into distinct zones. These baffles create separate flow channels that ensure comprehensive coolant distribution around cylinder walls, preventing thermal inconsistencies while maintaining a relatively simple overall structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Coolant baffles serve as intermediary elements within the water jacket system. These baffles mediate the coolant flow by directing it along specific paths, ensuring proper circulation and heat removal without requiring a complete redesign of the water jacket structure itself.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Temperature

If coolant flow is not properly directed, then the water jacket structure remains simple, but thermal inconsistencies cause warping or deflection of the block or cylinder head

Engineering Contradiction:

Improvethermal consistencyVSAvoidcoolant flow direction control

Core Design Contradiction:

TemperatureVSDevice complexity

Solution Approach 1:

The coolant baffles are strategically positioned at specific locations within the water jacket where flow direction control is most needed. This local intervention ensures proper thermal consistency in critical areas around cylinder walls without adding complexity throughout the entire water jacket structure.

Inventive Principle:

Principle #3Local quality

3Strength

If additional support or rigidity is added to the baffle, then structural integrity is improved, but device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improvebaffle structural integrityVSAvoidbaffle manufacturing

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The coolant baffles are designed as thin-walled structures made from materials with adequate mechanical properties. This approach provides sufficient structural integrity to direct coolant flow and withstand operating conditions while maintaining simplicity in manufacturing and avoiding the need for additional support ribs or complex reinforcement structures.

Inventive Principle:

Principle #30Flexible shells and thin films

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 configuration improves cooling efficiency by directing coolant flow around cylinder walls, reducing thermal inconsistencies and preventing damage, with a 55% coolant volume exiting through the cylinder head, while maintaining structural integrity and reducing the need for additional support or rigidity in the baffle.

Implementation Method 1

a longitudinally extending coolant baffle is disposed in the water jacket adjacent to the sealing shoulders. The coolant baffle includes a baffle sealing face configured to engage the opposed sealing shoulders to direct the coolant entering the water jacket

Methodology Applied

Scientific EffectFluid flow direction control:

Implementation Method 2

the cylinder portion includes cylinder walls that are generally surrounded by a water jacket through which engine coolant is circulated under pressure for the purpose of removing excess heat therefrom

Methodology Applied

Scientific EffectHeat transfer through fluid circulation: Convection

Implementation Method 3

Opposed sealing shoulders extend into the coolant flow path of the water jacket from the water jacket side walls and a longitudinally extending coolant baffle is disposed in the water jacket adjacent to the sealing shoulders

Methodology Applied

Scientific EffectSealing contact:

Data Source

PatentUS8312848B2Engine block assembly for internal combustion engine

Publication Date: 2012.11.20 GM GLOBAL TECHNOLOGY OPERATIONS LLC

AI summary

An engine block assembly for an internal combustion engine comprises a cylinder portion having a plurality of cylinder walls disposed therein. A water jacket, having opposed side walls, extends about the plurality of cylinder walls to define a coolant flow path. A coolant inlet in fluid communication with the water jacket delivers coolant thereto and a coolant outlet in fluid communication with the water jacket removes coolant therefrom. Opposed sealing shoulders extend into the coolant flow path from the water jacket side walls and a longitudinally extending coolant baffle is disposed in the water jacket adjacent to the sealing shoulders. The coolant baffle includes a baffle sealing face configured to engage the opposed sealing shoulders to direct the coolant entering the water jacket in a single direction around the cylinder walls of the cylinder portion.