Results 81 to 90 of about 740 (163)

Development and validation of a novel quasi-dimensional combustion model for un-scavenged prechamber gas engines with numerical simulations and engine experiments

, 2020
Lean-burn gas engines equipped with an un-scavenged prechamber have proven to reduce nitrogen oxides (NOx) emissions and fuel consumption, while mitigating combustion cycle-to-cycle fluctuations and unburned hydrocarbon (UHC) emissions.
Kyrtatos, Panagiotis, Xu, Guoqing, Wright, Yuri Martin, Boulouchos, Konstantinos, Bardis, Konstantinos, Barro, Christophe   +5 more
core   +1 more source

Correlations between fuel properties and combustion inside an active pre-chamber

Applications in Energy and Combustion Science
An active pre-chamber (PC) in a spark-ignition engine is a promising approach to extend the lean operating limit, thereby, increasing the indicated efficiency.
Patrick Burkardt, Sanket Girhe, Bastian Lehrheuer, Heinz Pitsch, Stefan Pischinger   +4 more
doaj   +1 more source

Numerical simulations of a prechamber autoignition engine operating on natural gas

, 2009
Small to medium scale cogeneration engines are a common means of power production in remote areas. Reducing emissions of this type of power generation equipment-while maintaining high efficiencies-is an effective way of reducing greenhouse gas emissions ...
Heyne, Stefan,, Millot, Gregory,, Favrat, D.,   +2 more
core  

Fuel System for a Gas Engine with a Scavenged Prechamber [PDF]

, 2021
V první části práce pojednává o konstrukčním řešení palivové tratě pro přívod paliva do aktivně vyplachované předkomůrky a sacího potrubí zkušebního jednoválce. V textu je uvedeno a porovnáno několik variant.
Štěpán Kyjovský
core  

Simulation analysis of a gas engine with various prechamber neck diameters in lean burning condition

Pojazdy Szynowe
The research presented in this paper focused on the simulation analysis of the pre-chamber neck diameter on in-cylinder processes in a large gas engine.
Filip Szwajca, Kinga Skobiej, Kamil Wittek   +2 more
doaj   +1 more source

Mixing-Controlled Combustion of Ethanol Enabled by Prechamber Ignition (PC-MCC): A Preliminary Experimental Demonstration

This numerical study focuses on assessing the key design parameters of interest for use of an active prechamber igniter as an ignition assistance device to enable mixing-controlled combustion (MCC) of ethanol (E100) in a heavy-duty Caterpillar C9.3B ...
Dempsey, Adam, Zeman, Jared, Yan, Ziming, Bunce, Michael   +3 more
core   +1 more source

Study of NOx Formation at Lean Conditions in a Prechamber-Ignited Two-Stroke Natural Gas Engine

A computational fluid dynamics study of a large-bore, two-stroke, integral compressor engine is analyzed. The engine under study operates on natural gas and uses a prechamber for ignition.
Nowlin, Jacob Lewis
core   +1 more source

Experimental Investigation on Knock Characteristics from Pre-Chamber Gas Engine Fueled by Hydrogen

Energies
Hydrogen-fueled engines require large values of the excess air ratio in order to achieve high thermal efficiency. A low value of this coefficient promotes knocking combustion.
Ireneusz Pielecha, Filip Szwajca, Kinga Skobiej   +2 more
doaj   +1 more source

CFD Investigation of Methanol Combustion in Active and Passive Pre-Chamber Marine Engine Configurations

Energies
This study presents a 3D computational fluid dynamics (CFD) investigation of methane and methanol combustion in a medium-speed, large-bore marine spark-ignition engine equipped with a pre-chamber (PC) ignition system.
Marco Palomba, Roberta De Robbio, Maria Cristina Cameretti   +2 more
doaj   +1 more source

A Novel Modeling Approach for Plastics Melting within a CFD-DEM Framework. [PDF]

Polymers (Basel), 2021
Celik A, Bonten C, Togni R, Kloss C, Goniva C.   +4 more
europepmc   +1 more source