Ignition Characteristics of Ethane and Its Roles in Natural Gas for HCCI Engine Operation

2015 ◽  
Vol 8 (2) ◽  
pp. 307-328 ◽  
Author(s):  
Hiroki Tanaka ◽  
Kazunobu Kobayashi ◽  
Takahiro Sako ◽  
Yasuyuki Sakai ◽  
Masahiro Furutani ◽  
...  
Keyword(s):  
Natural Gas ◽  
Engine Operation ◽  
Hcci Engine ◽  
Ignition Characteristics

Ignition Characteristics of Methanol and Natural-Gas in a HCCI Engine Assisted by DME

2007 ◽  
Author(s):  
Sukho Jung ◽  
Masahiro Ishida ◽  
Hironobu Ueki ◽  
Daisaku Sakaguchi
Keyword(s):  
Natural Gas ◽  
Hcci Engine ◽  
Ignition Characteristics

scholarly journals Combustion of premixed DME and natural gas in a HCCI engine

2005 ◽  
Vol 121 (2) ◽  
pp. 20-29
Author(s):  
Masahiro ISHIDA ◽  
Sukho JUNG ◽  
Hironobu UEKI ◽  
Daisaku SAKAGUCHI
Keyword(s):  
Natural Gas ◽  
Equivalence Ratio ◽  
Combustion Process ◽  
Reaction Rates ◽  
Gas Mixture ◽  
Temperature Reaction ◽  
Load Range ◽  
Hcci Engine ◽  
Test Engine ◽  
Ignition Characteristics

The objectives of the present study is to clarify ignition characteristics, the combustion process, the knock limit and the misfire limit of natural gas mixed with a small amount of dimethyl ether (DME) in a HCCI engine. In the combustion test, natural gas and a small amount of DME were charged into the suction air homogeneously. The equivalence ratio of natural gas was increased to find the knock limit or the misfire limit of the HCCI test engine under a constant DME amount. The effect of the natural gas addition on suppression of the low temperature reaction of DME, and the effects of the DME amount and the intake temperature on the reaction rates, the knock limit of the DME/natural gas mixture, and the operation load range of the HCCI engine were investigated experimentally.

Natural gas HCCI engine operation with exhaust gas fuel reforming

2006 ◽  
Vol 31 (5) ◽  
pp. 587-595 ◽  
Author(s):  
D YAP ◽  
S PEUCHERET ◽  
A MEGARITIS ◽  
M WYSZYNSKI ◽  
H XU
Keyword(s):  
Natural Gas ◽  
Exhaust Gas ◽  
Fuel Reforming ◽  
Engine Operation ◽  
Hcci Engine ◽  
Gas Fuel

Study on Characteristics of HCCI Engine Operation for EGR, Equivalence Ratio and Intake Charge Temperature and Pressure While Using Dimethyl Ether

2007 ◽  
Author(s):  
Seyed Navid Shahangian ◽  
Seyed Ali Jazayeri ◽  
Nader Bagheri
Keyword(s):  
Kinetic Equations ◽  
Chemical Kinetic ◽  
Fuel Loading ◽  
Engine Operation ◽  
Hcci Engine ◽  
Auto Ignition ◽  
Hcci Engines ◽  
Intake Pressure ◽  
Ignition Characteristics ◽  
And Performance

In this paper a single-zone zero-dimensional thermodynamic model, coupled with chemical kinetic equations, has been developed using Visual FORTRAN programming software to predict combustion and performance characteristics of HCCI engines using DME fuel. The model is used to investigate the effects of intake temperature, fuel loading, intake pressure, and exhaust gas recirculation (EGR) on auto-ignition characteristics, optimum combustion phasing, and performance of the HCCI engines. Simultaneous effects of these variables for finding the most appropriate regime of HCCI engine operation, considering knock and misfire boundaries, are also studied.

Experimental Investigation of a Heavy-Duty Compression-Ignition Engine Retrofitted to Natural Gas Spark-Ignition Operation

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Jinlong Liu ◽  
Hemanth Kumar Bommisetty ◽  
Cosmin Emil Dumitrescu
Keyword(s):  
Natural Gas ◽  
Spark Ignition ◽  
Operating Conditions ◽  
Compression Ignition ◽  
Heavy Duty ◽  
Compression Ignition Engine ◽  
Engine Operation ◽  
Cycle Variation ◽  
Spark Timing ◽  
Ci Engines

Heavy-duty compression-ignition (CI) engines converted to natural gas (NG) operation can reduce the dependence on petroleum-based fuels and curtail greenhouse gas emissions. Such an engine was converted to premixed NG spark-ignition (SI) operation through the addition of a gas injector in the intake manifold and of a spark plug in place of the diesel injector. Engine performance and combustion characteristics were investigated at several lean-burn operating conditions that changed fuel composition, spark timing, equivalence ratio, and engine speed. While the engine operation was stable, the reentrant bowl-in-piston (a characteristic of a CI engine) influenced the combustion event such as producing a significant late combustion, particularly for advanced spark timing. This was due to an important fraction of the fuel burning late in the squish region, which affected the end of combustion, the combustion duration, and the cycle-to-cycle variation. However, the lower cycle-to-cycle variation, stable combustion event, and the lack of knocking suggest a successful conversion of conventional diesel engines to NG SI operation using the approach described here.

Performance Prediction of Gas Turbine Under Different Strategies Using Low Heating Value Fuel

2013 ◽  
Author(s):  
Edson Batista da Silva ◽  
Marcelo Assato ◽  
Rosiane Cristina de Lima
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Equivalence Ratio ◽  
Safe Operation ◽  
Engine Operation ◽  
Heating Value ◽  
Gasification Process ◽  
Surge Margin ◽  
And Performance ◽  
Industrial Gas Turbine

Usually, the turbogenerators are designed to fire a specific fuel, depending on the project of these engines may be allowed the operation with other kinds of fuel compositions. However, it is necessary a careful evaluation of the operational behavior and performance of them due to conversion, for example, from natural gas to different low heating value fuels. Thus, this work describes strategies used to simulate the performance of a single shaft industrial gas turbine designed to operate with natural gas when firing low heating value fuel, such as biomass fuel from gasification process or blast furnace gas (BFG). Air bled from the compressor and variable compressor geometry have been used as key strategies by this paper. Off-design performance simulations at a variety of ambient temperature conditions are described. It was observed the necessity for recovering the surge margin; both techniques showed good solutions to achieve the same level of safe operation in relation to the original engine. Finally, a flammability limit analysis in terms of the equivalence ratio was done. This analysis has the objective of verifying if the combustor will operate using the low heating value fuel. For the most engine operation cases investigated, the values were inside from minimum and maximum equivalence ratio range.

HCCI Engine Operation with Acetylene the Fuel

2008 ◽  
Author(s):  
S. Swami Nathan ◽  
J. M. Mallikarjuna ◽  
A. Ramesh
Keyword(s):  
Engine Operation ◽  
Hcci Engine

scholarly journals Compression Ratio Influence on Maximum Load of a Natural Gas Fueled HCCI Engine

2002 ◽  
Author(s):  
Jan-Ola Olsson ◽  
Per Tunestål ◽  
Bengt Johansson ◽  
Scott Fiveland ◽  
Rey Agama ◽  
...  
Keyword(s):  
Natural Gas ◽  
Compression Ratio ◽  
Maximum Load ◽  
Hcci Engine ◽  
Gas Fueled
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