Controlled End Gas Auto Ignition With Exhaust Gas Recirculation on a Stoichiometric, Spark Ignited, Natural Gas Engine

Bayliff, Scott; Windom, Bret; Marchese, Anthony J.; Hampson, Gregory J.; Chiera, Domenico; Carlson, Jeffrey; Olsen, Daniel B.

doi:10.1115/1.0003702v

Cited by 6 publications

(2 citation statements)

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“…The two methods used for knock quantification within the scope of this project were the CSU-developed Fast Fourier Transform of a Bandpass Signal system and the Knock Measurement System that was provided with the original CFR engine. Other potential methods of knock quantification are described by Bayliff [5] and Wise [1].…”

Section: Knock Measurement Systemsmentioning

confidence: 99%

Experimental Evaluation of the Methane Number Measurement Procedure for Gaseous Fuel Rating

Baucke,

Wise,

Bremmer

et al. 2024

Energies

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Methane Number (MN) is a fuel rating technique for gaseous fuels analogous to Octane Number. This study establishes and shares a repeatable and reproducible method for MN determination of a gaseous fuel using a modified Cooperative Fuel Research Engine (CFR). Adaptations required to convert a CFR engine for use in the MN test procedure are identified. The investigation includes allowable environmental parameters and operating variation limits. An essential aspect of the MN method involves identifying and quantifying Knock Intensity (KI) during engine operation. CFR engines, originally designed for gasoline testing, come equipped with their own knock measurement systems utilizing a capacitive detonation sensor. The original system is compared with a Fast Fourier Transform (FFT) approach that uses a piezoelectric pressure transducer. Quantification of methane number requires an accurate assessment of the reference fuel blend (CH4 + H2). A comparison is carried out between dynamic blending using mass flow meters and bracketing using certified gas bottles containing various CH4/H2 blends from a gas supplier.

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Section: Knock Measurement Systemsmentioning

confidence: 99%

Experimental Evaluation of the Methane Number Measurement Procedure for Gaseous Fuel Rating

Baucke,

Wise,

Bremmer

et al. 2024

Energies

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“…This research has defined high percentages of exhaust gas recirculation (EGR) conditions and stoichiometric air/fuel ratio as requirements to achieve the performance desired without heavy knocking conditions. In addition, the rapid compression machine (RCM) and CFR engine were used to characterize the effects of variation in natural gas fuel reactivity [6], chemical mechanism optimization, and computational fluid dynamics (CFD) modeling to optimize combustion chamber design [7] [8] [9]. The phase described in this paper is installation, commissioning, and baseline testing of a heavy-duty single cylinder research engine.…”

Section: Introductionmentioning

confidence: 99%

Heavy Duty Natural Gas Single Cylinder Research Engine Installation, Commissioning, and Baseline Testing

Rodríguez

Hampson

et al. 2022

EPE

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Natural Gas (NG) Internal Combustion Engines (ICE) are a promising alternative to diesel engines for on-road heavy-duty applications to reduce greenhouse gas and harmful pollutant emissions. NG engines have not been widely adopted due to the lower thermal efficiency compared with diesel engine counterparts. To develop the base knowledge required to reach the desired efficiency, a Single Cylinder Engine (SCE) is the most effective platform to acquire reliable and repeatable data. A SCE test cell was developed using a Cummins 15-liter six-cylinder heavy-duty engine block modified to fire one cylinder (2.5-liter displacement). A Woodward Large Engine Control Module (LECM) is integrated to permit implementation of real-time advanced combustion control. Intake and exhaust characteristics, fuel composition, and exhaust gas recirculated substitution rate (EGR) are fully adjustable. A high-speed data acquisition system acquires in-cylinder, intake, and exhaust pressure for combustion analysis. The baseline testing shows reliable and consistent results for engine thermal efficiency, indicated mean effective pressure (IMEP), and coefficient of variance of the IMEP over a wide range of operating conditions while achieving effective control of all engine control and operation variables. This test cell will be used to conduct a research program to develop new and innovative control algorithms and CFD optimized combustion chamber designs, allowing ultra-high efficiency and low emissions for NG ICE heavy-duty on-road applications.

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A Study of Propane Combustion in a Spark-Ignited Cooperative Fuel Research (CFR) Engine

Kar¹,

Fosudo²,

Slunecka³

et al. 2022

SAE Technical Paper Series

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Controlled End Gas Auto Ignition With Exhaust Gas Recirculation on a Stoichiometric, Spark Ignited, Natural Gas Engine

Cited by 6 publications

References 0 publications

Experimental Evaluation of the Methane Number Measurement Procedure for Gaseous Fuel Rating

Experimental Evaluation of the Methane Number Measurement Procedure for Gaseous Fuel Rating

Heavy Duty Natural Gas Single Cylinder Research Engine Installation, Commissioning, and Baseline Testing

A Study of Propane Combustion in a Spark-Ignited Cooperative Fuel Research (CFR) Engine

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