Heterogeneous and homogeneous combustion of fuel-lean C3H8/O2/N2 mixtures over rhodium at pressures up to 6 bar

2020 ◽  
Author(s):  
John Mantzaras ◽  
Ran Sui ◽  
Chung K. Law ◽  
Rolf Bombach
Keyword(s):  
Homogeneous Combustion

Effects of Swirl Motion on Methane Homogeneous Combustion in the AVL Tri- flow® System

2009 ◽  
Author(s):  
Edilson de Castro Viana ◽  
Francisco José de Souza ◽  
Marcos Langeani
Keyword(s):  
Homogeneous Combustion

Low Emissions Combustion for the Regenerative Gas Turbine: Part 1—Theoretical and Design Considerations

1974 ◽  
Vol 96 (1) ◽  
pp. 32-48 ◽  
Author(s):  
W. R. Wade ◽  
P. I. Shen ◽  
C. W. Owens ◽  
A. F. McLean
Keyword(s):  
Gas Turbine ◽  
Flame Temperature ◽  
Homogeneous System ◽  
Automotive Application ◽  
Inlet Temperature ◽  
Oxides Of Nitrogen ◽  
Turbine Engine ◽  
Homogeneous Combustion ◽  
Hc Emissions ◽  
Model Year

This first part, of a two part paper, reviews the NOx emission problem of the regenerative gas turbine engine for automotive application. It discusses the problem of fuel droplet burning, which causes heterogenous combustion with resulting high flame temperatures and high levels of oxides of nitrogen. The paper proposes means to achieve homogeneous combustion and shows that, even with this approach, flame temperatures need to be closely controlled to effect a compromise between NOx, CO, and HC emissions in order to meet the stringent numerical levels of emissions specified by the Federal standards for 1976 and subsequent model year automobiles. The paper shows that combustor inlet temperature of a homogeneous system has little effect, theoretically, on computed NOx emissions expressed as grams per mile, thereby strengthening the case for the regenerative turbine engine. A design concept for homogeneous combustion with controlled flame temperature is discussed.

scholarly journals Smart ceramic materials for homogeneous combustion in internal combustion engines: A review

2009 ◽  
Vol 13 (3) ◽  
pp. 153-163 ◽  
Author(s):  
Kannan Chidambaram ◽  
Tamilporai Packirisamy
Keyword(s):  
Combustion Chamber ◽  
Internal Combustion Engines ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
Combustion Engines ◽  
Emission Level ◽  
Engine Cylinder ◽  
Homogeneous Combustion ◽  
Zero Emission ◽  
Porous Ceramic Materials

The advantages of using ceramics in advanced heat engines include increased fuel efficiency due to higher engine operating temperatures, more compact designs with lower capacity cooling system. Future internal combustion engines will be characterized by near zero emission level along with low specific fuel consumption. Homogenous combustion which realized inside the engine cylinder has the potential of providing near zero emission level with better fuel economy. However, the accomplishment of homogeneous combustion depends on the air flow structure inside the combustion chamber, fuel injection conditions and turbulence as well as ignition conditions. Various methods and procedures are being adopted to establish the homogeneous combustion inside the engine cylinder. In recent days, porous ceramic materials are being introduced inside the combustion chamber to achieve the homogeneous combustion. This paper investigates the desirable structures, types, and properties of such porous ceramic materials and their positive influence on the combustion process.

Hetero-/homogeneous combustion of fuel-lean CH4/O2/N2 mixtures over PdO at elevated pressures

2019 ◽  
Vol 37 (4) ◽  
pp. 5465-5472 ◽  
Author(s):  
Ran Sui ◽  
John Mantzaras ◽  
Et-touhami Es-sebbar ◽  
Rolf Bombach
Keyword(s):  
Elevated Pressures ◽  
Homogeneous Combustion

scholarly journals A numerical study of confined turbulent jets for homogeneous combustion with oxygen enrichment

Fuel ◽  
2020 ◽  
Vol 261 ◽  
pp. 116449 ◽  
Author(s):  
Kumar Aanjaneya ◽  
Weiyu Cao ◽  
Yawei Chen ◽  
Claus Borgnakke ◽  
Arvind Atreya
Keyword(s):  
Numerical Study ◽  
Turbulent Jets ◽  
Oxygen Enrichment ◽  
Homogeneous Combustion

Comparison of Stratified and Homogeneous Combustion in a Direct-Injected Two-Stroke Engine for Snowmobile Applications

2008 ◽  
Author(s):  
Justin Johnson ◽  
Karen R. Den Braven
Keyword(s):  
Fuel Economy ◽  
Direct Injection ◽  
Gasoline Direct Injection ◽  
Homogeneous Combustion ◽  
Unburned Hydrocarbons ◽  
Stratified Combustion ◽  
Operation Results ◽  
Stroke Engine

Gasoline direct injection (GDI) two-stroke engine technology has been developed for use in snowmobile applications. Applying GDI to a two-stroke engine significantly reduces emissions of unburned hydrocarbons and improves fuel economy by reducing or eliminating the short circuiting of fuel that occurs in conventional carbureted two-stroke engines. The GDI design allows for two different modes of combustion, stratified and homogeneous. Stratified combustion is typically used during idle and light to moderate loads at low engine speeds while homogeneous combustion is used at moderate to high loads and medium to high engine speeds. This work presents the process and results of determining which mode of combustion provides better fuel economy during cruise point operation, and where the transition from stratified to homogeneous combustion should occur in snowmobile operation. Results show that homogeneous calibration is the superior mode of combustion for the cruise points of a snowmobile.

Computational Fluid Dynamics Study of Biomass Cook Stove—Part 1: Hydrodynamics and Homogeneous Combustion

2019 ◽  
Vol 59 (9) ◽  
pp. 4161-4176 ◽  
Author(s):  
Zakir Husain ◽  
Shashank S. Tiwari ◽  
Aniruddha B. Pandit ◽  
Jyeshtharaj B. Joshi
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Homogeneous Combustion
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