Using ADAMS/Engine For Analyzing Crankshaft Loads And Torsion Vibration.

MSc. Ignacio Manzo: AuthorPhD. Noel Leon: Coauthor Monterrey Tech.

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Table of Contents

IntroductionHypothesisObjectiveProject developmentADAMS/View modelADAMS/Engine modelResultsConclusions

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Introduction.

• Difficulty to obtain information• Virtual Product Development as tool to Problem’s Analysis• CAD/CAE Tools.

Mechanical Desktop 6.ADAMS/Engine.

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Hypothesis.

• Dynamics and vibratory forces are the main Cause of engine component failures. With computer engineering aides like ADAMS/Engine it is possible to determine these dynamic forces transmitted between components and analyze them to control functional parameters with the objective to maintain them within permissible limits.

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Objective.

• The main objective of this work is to complete the entire force's analysis and apply in the main bearing of the four-cylinder internal combustion engine, as well as the resultant torque base on the result obtained from ADAMS/Engine.

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Project Development

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Project DevelopmentADAMS/View model

ADAMS Auto/Flex.

ADAMS/Engine modelTemplate Builder.Standard Interface .

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ADAMS/View model

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ADAMS/View model

Assembly in ADAMS/View model.

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ADAMS/Engine model

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ADAMS/Engine modelTemplate Builder.

Communicators.Engine Global DataParts generation.

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ADAMS/Engine model

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ADAMS/Engine modelStandard Interface.

Subsystem Generating.Assembly Generating.

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Results.

• Analytical calculus.• Simulation runs.

2500 rpm.From 650 to 4500 rpm

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Results.

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Results.

Results at 2500 rpmFx

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Results

Results at 2500 rpmFy

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Results

Result at 2500 rpmFz

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ResultsResults at 2500 rpm

Torque.

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Results.Results from 650-4500 rpm

Torque.

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Conclusions.

• The variation in main bearing forces is the result of cranktrain and bushing flexion.

• Maximum torque at 3125 rmp (18750 degrees/sec) then 3500 rpm (3750 degrees/sec) is result of the difference between the excitation frequency and natural frequency of the system.

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Profits

• Virtual Product Development complete in ADAMS/Engine.• Complete force’s analysis of torque and main bearing.• Analytical model simplified.

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The End.