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Record W41158240 · doi:10.5555/2349508.2349509

EGR design using AHDL+CFD

2009· article· en· W41158240 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueSummer Computer Simulation Conference · 2009
Typearticle
Languageen
FieldEngineering
TopicHydraulic and Pneumatic Systems
Canadian institutionsContinental (Canada)
Fundersnot available
KeywordsValve actuatorModular designEngineeringComputational fluid dynamicsAutomotive engineeringMechanical engineeringComputer scienceSimulationBall valveAerospace engineering

Abstract

fetched live from OpenAlex

A modular modeling approach was used to establish the design configuration for an exhaust gas recirculation valve, or EGR, intended to operate without an engine computer unit, or ECU signal. The proposed valve will be a fully mechanical device driven by means of a pressure differential across the valve and is intended to be completely independent of any electrical input. Modeling the valve involved the use of a combination of 3 relatively low cost software applications on a 64bit Dell Precision 690 with 16GB of RAM, to achieve what might otherwise call for a high end multi-physics FEA application and require much larger computational resources.At present, the standard method of controlling EGR is with an electrically actuated or vacuum actuated valve. These methods require expensive highly utilized ECU resources to control the valve position and regulate the EGR flow. The proposed valve would go between the exhaust and the intake manifolds. The model was formulated by balancing the spring stiffness and pre-load with the valve flow channel configuration and the pintle mass to attain a proper balance of forces. It took into consideration the inertial effects of the spring-mass system to predict valve operation under real-world conditions by using pressure and acceleration signals obtained in the field.Correlation work done indicates that the modeling approach is sound and may effectively be used in the design of such a valve.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.950
Threshold uncertainty score0.650

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.112
GPT teacher head0.290
Teacher spread0.178 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it