NDLI: An Alternative Calculation for Methane Number for Lean Burn Spark Ignited Engines Operating on Low Energy Content Gaseous Fuels

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Volume 1: Large Bore Engines; Fuels; Advanced Combustion

Experimental Investigation of NOx Formation in a Dual Fuel Engine

Engine Performances With Advanced Common Rail Injector Design

Influence of Injection Parameters and Operating Conditions on Ignition and Combustion in Dual-Fuel Engines

Model Based Design and Optimization for Large Bore Engines: Some Industrial Case Studies

Modeling the Formation of Pollutant Emissions in Large-Bore, Lean-Burn Gas Engines

Reaction of Sulfuric Acid in Lube Oil: Implications for Large Two-Stroke Diesel Engines

HIL Operation of Single Cylinder Research Engines to Optimize the Transient Behavior of Large Gas Engines

Comparative Analysis of EGR and Air Dilution in Spark-Ignited Natural Gas Engines

Using Multi-Dimensional Combustion Simulations of a Natural Gas/Diesel Dual Fuel Engine to Investigate NOx Trends With Air-Fuel Ratio

Experimental Investigation of Sulfuric Acid Condensation and Corrosion Rate in Motored BUKH DV24 Diesel Engine

Modeling and Analysis of Tier 4 Locomotives Operating in a High-Altitude Tunnel

Waste Heat Recovery for Heavy-Duty Diesel Engines: A Review of Mechanical Turbocompounding

Simulation of Coarse Droplet and Liquid Column Formed Around Nozzle Outlets due to Valve Wobble of a GDI Injector

Durability Testing of Biomass Based Oxygenated Fuel Components in a Compression Ignition Engine

Effects of Fuel Quality on Gaseous Emissions From an 8.9L Spark-Ignited Natural Gas Engine Operated Over Prime-Mover Cycles for Unconventional Well Development

Experimental and Numerical Investigation of Near-Nozzle Flow Behaviour Under Flash Boiling Conditions

Pilot Injection of Reactive Fuels as Ignition Source in Natural Gas Engines With Lean Burn Concept

Application of a Rectified Linear Unit (ReLU) Based Artificial Neural Network to Cetane Number Predictions

Sources of Particulate Matter Emissions Variability From a Gasoline Direct Injection Engine

An Experimental Investigation on Performance, Combustion and Emission Characteristics of a Low Heat Rejection Engine Using Diesel and Diethyl Ether Blends

Experimental Validation of a 3-Component Surrogate for Sasol-IPK in Single Cylinder Diesel Engine and IQT

A Computational Investigation of Fuel Chemical and Physical Properties Effects on Gasoline Compression Ignition in a Heavy-Duty Diesel Engine

Partially Premixed Compression Ignition of Fischer Tropsch Synthetic Paraffinic Kerosene (S8) With PFI of N-Butanol

An Experimental Investigation of Combustion Process of a Turbo-Charged SI Stoichiometric Off-Road Engine Operated on Gaseous Fuel

Influence of Acetone-Butanol-Ethanol (ABE)–Gasoline Blends on Regulated and Unregulated Emissions From a PFI SI Engine

Internal Combustion Engines as Fluidized Bed Reactors

An Experimental Investigation of Early Flame Development in an Optical SI Engine Fueled With Natural Gas

Optimization of the Charge Motion in Internal Combustion Engines Driven by Sewage Gas for CHP-Units

Influence of the Spatial and Temporal Interaction Between Diesel Pilot and Directly Injected Natural Gas Jet on Ignition and Combustion Characteristics

Partially Premixed Combustion Application for Diesel Power Improvement

An Alternative Calculation for Methane Number for Lean Burn Spark Ignited Engines Operating on Low Energy Content Gaseous Fuels

Analysis of Crank Angle-Resolved Vortex Characteristics Under High Swirl Condition in a Spark-Ignition Direct-Injection Engine

Effect of Diesel Injection Split on Combustion and Emissions Performance of a Natural Gas–Diesel Dual Fuel Engine at a Low Load Condition

Combustion Performance and Unburned Hydrocarbon Emissions of a Natural Gas–Diesel Dual Fuel Engine at a Low Load Condition

Spray-Wall Interactions in a Small-Bore, Multi-Cylinder Engine Operating With Reactivity-Controlled Compression Ignition

An Experimental and Computational Analysis of Water Condensation Separator Within a Charge Air Cooler

High Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine

Experimental Investigation of Water Injection Technique in Gasoline Direct Injection Engine

A Study of Injection Strategy to Achieve High Load Points for Gasoline Compression Ignition (GCI) Operation

Experimental Study of Flame Stretch Under Engine-Like Conditions

Homogenous Charge Compression Ignition (HCCI) Operation With Jet Fuel and Water Injection in a Single Cylinder Diesel CFR Engine

Discharge Characteristics of Current Boosted Spark Events Under Flow Conditions

Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending

CFD Simulations of the Effect of Water Injection Characteristics on TSCI: A New, Load-Flexible, Advanced Combustion Concept

Computational Study to Identify Feasible Operating Space for a Mixed Mode Combustion Strategy: A Pathway for PCI High Load Operation

EGR and Backpressure Effects on Knock Behavior in Stoichiometric Natural Gas Engines

Combustion and Emissions of Jet-A and N-Butanol in RCCI Operation

Fuel Stratification and Partially Premixed Combustion With Neat N-Butanol in a Compression Ignition Engine

Influence of Swirl Ratio on Diesel-Methane Dual Fuel Combustion: A CFD Investigation

Thermodynamic Considerations Related to Knock: Results From an Engine Cycle Simulation

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An Alternative Calculation for Methane Number for Lean Burn Spark Ignited Engines Operating on Low Energy Content Gaseous Fuels

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Xu, Hui Axel, O. Zur Loye Robin, J. Bremmer
Copyright Year	2017
Abstract	Low energy content fuels such as landfill gas can contain a significant amount of diluents like CO2. Critical fuel properties including the lower heating value (LHV) and an anti-knock property, in particular the methane number (MN), should be considered to optimize operation of a spark ignited (SI) engine. The MN has been shown to be a good indicator of knock propensity in stoichiometric SI engines. However, this approach is not always as effective for lean burn SI engines. Two fuels with the same methane number, but with different compositions, may exhibit a different propensity to knocking in an advanced lean burn SI engine. This effect is particularly pronounced when comparing fuels that have different amounts of diluents. In this paper we propose an alternative calculation of the MN, which compensates for the effect of diluents. More specifically, we define a lean burn methane index (LBMI), which is calculated without the diluents. This approach was validated using chemical kinetics modeling. The analysis considered fundamental combustion properties, including laminar flame speed (LFS), adiabatic flame temperature (AFT) and the autoignition interval (AI). For this study, a baseline fuel was selected based on a typical US pipeline natural gas composition. CO2 was then added as a diluent to the baseline fuel to simulate low energy density fuel compositions. Lambda values were selected to provide the same AFT or engine-out NOx. Low energy content fuel were found to have very similar AI values (less than 2% relative difference) to the baseline fuel at the target lambda values. A key result of this study is that the LBMI is a much better predictor of knock propensity than the traditional MN, when comparing fuels with widely varying levels of dilution for advanced lean burn SI engines.
Sponsorship	Internal Combustion Engine Division
File Format	PDF
ISBN	9780791858318
DOI	10.1115/ICEF2017-3553
Volume Number	Volume 1: Large Bore Engines; Fuels; Advanced Combustion
Conference Proceedings	ASME 2017 Internal Combustion Engine Division Fall Technical Conference
Language	English
Publisher Date	2017-10-15
Publisher Place	Seattle, Washington, USA
Access Restriction	Subscribed
Subject Keyword	Methane Temperature Spark-ignition engine Pipelines Carbon dioxide Combustion Fuels Sanitary landfills Density Modeling Engines Flames Gaseous fuels Heating Chemical kinetics Nitrogen oxides Natural gas Diluents
Content Type	Text
Resource Type	Article

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