A Computational Study On Ethanol Hcci Combustion Microform

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A Computational Study On Ethanol Hcci Combustion Microform

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Author : Cathy Ka Wai Ng
language : en
Publisher: Library and Archives Canada = Bibliothèque et Archives Canada
Release Date : 2004

A Computational Study On Ethanol Hcci Combustion Microform written by Cathy Ka Wai Ng and has been published by Library and Archives Canada = Bibliothèque et Archives Canada this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

Homogeneous charge compression ignition (HCCI) engines have great potential in high efficiency with ultra-low NOx and particulates emissions. Therefore, fundamentals of HCCI and the control techniques of changing initial temperature, equivalence ratio, exhaust gas recirculation (EGR) rate and fuel reforming rate are examined using a single-zone well-stirred reactor model of an ethanol engine. In particular, the expansion of the Acceptable Operating Range (AOR) using fuel reforming, complemented by EGR, is investigated. It is found that reforming extends the complete combustion limit of the AOR, but shrinks the NOx emission limit. Reforming is also less effective than EGR in widening the AOR at the conditions studied. Therefore, reforming should be used only at temperatures near the ignition limit to enhance combustion. It is recommended that other control techniques, such as using different fuel and additives, and stratified charge combustion should be tested using a more sophisticated multi-zone well-stirred reactor model.

A Computational Study Of The Effect Of Fuel Reforming Egr And Initial Temperature On Lean Ethanol Hcci Combustion

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Author : Cathy K. W. Ng
language : en
Publisher:
Release Date : 2004

A Computational Study Of The Effect Of Fuel Reforming Egr And Initial Temperature On Lean Ethanol Hcci Combustion written by Cathy K. W. Ng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Alcohol as fuel categories.

Investigation Of Hcci Combustion Of Diethyl Ether And Ethanol Mixtures Using Carbon 14 Tracing And Numerical Simulations

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Author : John Hunter Mack
language : en
Publisher:
Release Date : 2004

Investigation Of Hcci Combustion Of Diethyl Ether And Ethanol Mixtures Using Carbon 14 Tracing And Numerical Simulations written by John Hunter Mack and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

A Computational Study Of Auto Ignition And Flame Propagation In Stratified Mixtures Relevant To Modern Engines

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Author : Ramanan Sankaran
language : en
Publisher:
Release Date : 2004

A Computational Study Of Auto Ignition And Flame Propagation In Stratified Mixtures Relevant To Modern Engines written by Ramanan Sankaran and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

Investigation Of Hcci Combustion Of Diethyl Ether And Ethanol Mixtures Using Carbon 14 Tracing And Numerical Simulations

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Author : John Hunter Mack
language : en
Publisher:
Release Date : 2004

Investigation Of Hcci Combustion Of Diethyl Ether And Ethanol Mixtures Using Carbon 14 Tracing And Numerical Simulations written by John Hunter Mack and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.

Computational Studies On Combustion Phenomena Of Diesel Hcci Engine

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Author : Avinash Alagumalai
language : en
Publisher:
Release Date : 2016-11-01

Computational Studies On Combustion Phenomena Of Diesel Hcci Engine written by Avinash Alagumalai and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-01 with categories.

Computational Investigation Of Ethanol And Bifuel Feasibility In Solstice Engine

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Author : Adam Michael Blake
language : en
Publisher:
Release Date : 2012

Computational Investigation Of Ethanol And Bifuel Feasibility In Solstice Engine written by Adam Michael Blake and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Ethanol as fuel categories.

A Gasoline Direct Injection (GDI) engine enables an increased fuel efficiency and higher power output than a conventional Port Fuel Injection (PFI) system. By injecting pressurized fuel straight into each cylinder of an internal-combustion engine, the degree of fuel atomization is increased, as well as the fuel vaporization rate. In order to further harness the effects of direct injection, ethanol is implemented as a fuel. The cooling effect of ethanol fuel droplets changing to vapor inside the combustion chamber facilitates a higher compression ratio, thus increasing engine power and efficiency. Three dimensional computational simulation is used to investigate the feasibility of ethanol and gasoline-ethanol mixtures as a fuel over varying compression ratios in a GDI engine. ANSYS Workbench is used to build a dynamic mesh of the varying compression ratio models, in conjunction with SolidWorks modeling software. To simulate flow physics, fuel injection, and combustion in the engine, ANSYS Fluent is employed. A parametric study of the effect of spark timing and compression ratio under ethanol operation at cruise RPM is performed. Additionally, a dual-injector gasoline-ethanol setup is implemented for the GDI engine and the effects of injection timing and mixture fraction of fuel is analyzed. Both ethanol and bi-fuel operation settings are found to provide significantly higher horsepower than the stock GDI engine. The dual-injector, bi-fuel operation is found to provide a specific fuel consumption comparable to the stock engine while providing substantially higher output. The results yield a promising fuel delivery strategy which can be appealing to many direct injection engine applications.

Effect Of Ethanol On The Hcci Combustion

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Author : Kohtaro Hashimoto
language : en
Publisher:
Release Date : 2007

Effect Of Ethanol On The Hcci Combustion written by Kohtaro Hashimoto and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.

Computational Studies On Hcci Engines

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Author : Eduardo Rodrigues Correia
language : en
Publisher:
Release Date : 2010

Computational Studies On Hcci Engines written by Eduardo Rodrigues Correia and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Effects Of Increased Intake Pressure On Homogeneous Charge Compression Ignition Hcci Of Gasoline And Ethanol In A Four Cylinder Engine

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Author : Robert Vern Mills
language : en
Publisher:
Release Date : 2007

Effects Of Increased Intake Pressure On Homogeneous Charge Compression Ignition Hcci Of Gasoline And Ethanol In A Four Cylinder Engine written by Robert Vern Mills and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.