NDLI: Numerical Study on Evaporation of Lubricating Oil Droplets Under Natural Gas Engine Conditions

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Volume 1: Large Bore Engines; Fuels; Advanced Combustion

Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development

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Effects of Injection Pressure on Emission and Components of Particulate Matter From Marine Diesel Engine

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Accuracy of Diesel Engine Combustion Metrics Over the Full Range of Engine Operating Conditions

A Signal Processing of In-Cylinder Pressure for the Resonant Frequency Prediction of Combustion Process in Diesel Engines

Non-Equiprobable Statistical Analysis of Misfires and Partial Burns for Cycle-to-Cycle Control of Combustion Variability

Integration of Printed Sensors in Plain Engine Bearings

Analysis of Passenger Car Turbocharged Diesel Engines Performance When Tested at Altitude and of the Altitude Simulator Device Used

In-Cylinder CO2 Sampling Using Skip-Firing Method

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Prediction of Cyclic Variability and Knock-Limited Spark Advance (KLSA) in Spark-Ignition (SI) Engine

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Numerical Study on Evaporation of Lubricating Oil Droplets Under Natural Gas Engine Conditions

Comparison of Near-Wall Flow and Heat Transfer of an Internal Combustion Engine Using Particle Image Velocimetry and Computational Fluid Dynamics

Development of a Species-Based Extended Coherent Flamelet Model (SB-ECFM) for Gasoline Direct Injection Engine (GDI) Simulations

Numerical Evaluation of the Effects of Low Pressure EGR Mixer Configuration on Turbocharger Compressor Performance

Development of a Hybrid Lagrangian-Eulerian Model to Describe Spark-Ignition Processes at Engine-Like Turbulent Flow Conditions

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Modeling the Effect of Parametric Variations on Soot Particle Size Distribution in a Diesel Engine

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Evaluating Optimization Strategies for Engine Simulations Using Machine Learning Emulators

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Numerical Study on Evaporation of Lubricating Oil Droplets Under Natural Gas Engine Conditions

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Feng, Liyan Wang, Zixin Yi, Ping Gong, Weixin Cui, Jingchen Chen, Lei Tian, Jiangping Long, Wuqiang
Copyright Year	2018
Abstract	The distribution of lubricating oil droplets in cylinder is one of main causes of abnormal combustion of natural gas engines. The evaporation of lubricating oil droplet is one of the key sub-processes controlling its auto-ignition event. The components of lubricating oil with different carbon number (16–50) shows significantly different evaporation and ignition characteristics from gasoline and diesel fuels. Even though there are many evaporation models focusing on the evaporation behaviors of multi-component droplets, most of them are limited to the liquid fuels, which are composed by more volatile hydrocarbons. Therefore, understanding the evaporation characteristics of lubricating oil droplets is very important for investigating the mechanism of abnormal combustion of natural gas engines. In this study, a multi-component evaporation model for lubricating oil was developed, which considers several key characteristics in the droplet evaporation process, including the finite heat conduction and limited mass diffusion in liquid phase, multi-component diffusion in gas phase, real vapor-liquid equilibrium at the droplet interface, as well as the nitrogen quantity dissolved in liquid phase. The simulation results by this model were compared with experimental results, and good agreements have been achieved. Then, this model was used to study the evaporation behaviors of different hydrocarbon droplets, including lubricating oil droplet. The influences of ambient temperatures and pressures, as well as methane concentration on evaporation characteristics (namely the heat up period, average evaporation rate, and droplet lifetime) were investigated. The results show that both heat up period and evaporation rate of lubricating oil droplets increase as the methane concentration increases. Besides, the droplet lifetime monotonically decreases as the ambient pressure decreases. This is different from the diesel and gasoline droplets, for which the effects of pressure on the droplet evaporation behaviors are depended on the ambient temperature.
Sponsorship	Internal Combustion Engine Division
File Format	PDF
ISBN	9780791851999
DOI	10.1115/ICEF2018-9639
Volume Number	Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development
Conference Proceedings	ASME 2018 Internal Combustion Engine Division Fall Technical Conference
Language	English
Publisher Date	2018-11-04
Publisher Place	San Diego, California, USA
Access Restriction	Subscribed
Subject Keyword	Methane Temperature Vapor-liquid equilibrium Gas engines Ignition Combustion Evaporation Fuels Nitrogen Diffusion (physics) Pressure Carbon Heat conduction Heat Simulation results Gasoline Drops Lubricating oils Diesel Cylinders
Content Type	Text
Resource Type	Article

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