Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Flow Characteristics Of Gas Blast Fuel Injectors For Direct Injection Compression Ignition Engines
Download Flow Characteristics Of Gas Blast Fuel Injectors For Direct Injection Compression Ignition Engines full books in PDF, epub, and Kindle. Read online Flow Characteristics Of Gas Blast Fuel Injectors For Direct Injection Compression Ignition Engines ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Flow Characteristics of Gas-blast Fuel Injectors for Direct-injection Compression-ignition Engines by :
Download or read book Flow Characteristics of Gas-blast Fuel Injectors for Direct-injection Compression-ignition Engines written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural gas has a high auto-ignition temperature, therefore natural gas engines use an ignition source to promote combustion. The high-pressure direction-injection (HPDI) systems available use small diesel injections prior to the main gas injection. A new series of HPDI injectors have been developed that inject diesel and gas simultaneously through the same holes. In order to understand and control injection and combustion behavior in an engine, it is essential to understand how injection mass is related to the diesel/gas ratio and injection command parameters. Three prototype injectors are examined. "Prototype B" most closely resembles a standard J36 HPDI injector, but has a modified diesel needle that injects diesel internally into a common diesel/gas reservoir. Prototypes "CS & CSX" have the diesel needle eliminated and replaced with a flow restrictor. The pressure difference between the diesel and the gas controls the quantity of diesel injected. A single pulse width (GPW) for the gas needle controls the fuel quantities. An injection visualization chamber (IVC) was developed for flow measurements and optical characterization of injections into a chamber at pressures up to 80 bar. Diesel and natural gas are replaced by VISCOR® and nitrogen to study non-reacting flows. A novel feature of the IVC is a retracting shroud that allows the injector to reach steady-state prior to imaging. For low commanded injection duration (GPW less than 0.60 ms), the relation between GPW and injected mass is non-linear, for all injectors tested. For gas pulse widths greater than 0.65 ms the Co-injectors exhibit approximately linear behavior with higher diesel fuelling quantities lowering gas flow quantities. All Co-injectors are compared to baseline gas flow quantities of a standard J36 to show design difference effects on flow quantities. The sensitivity of gas flow to diesel in injection quantities, as well as the discharge coefficient are computed and theoretically modeled for each.
Book Synopsis CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS by :
Download or read book CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The characteristics of gasoline sprayed directly into combustion chambers are of critical importance to engine out emissions and combustion system development. The optimization of the spray characteristics to match the in-cylinder flow field, chamber geometry, and spark location are vital tasks during the development of an engine combustion strategy. Furthermore, the presence of liquid fuel during combustion in Spark-Ignition (SI) engines causes increased hydrocarbon (HC) emissions [1]. Euro 6, LEVIII, and US Tier 3 emissions regulations reduce the allowable particulate mass significantly from the previous standards. LEVIII standards reduce the acceptable particulate emission to 1 mg/mile [2]. A good Direct Injection Spark Ignited (DISI) strategy vaporizes the correct amount of fuel at the proper point in the engine cycle with the proper in-cylinder air flow for optimal power output with minimal emissions. The opening and closing phases of DISI injectors is crucial to this task as the spray produces larger droplets during both theses phases. This work focuses on the results from a novel method to investigate fuel behavior upon closing of the fuel injector. A Design of Experiments (DOE) was used to determine the effect of pressure, temperature, and pulse-width of the fuel spray after the closing event. Experiments determined that the primary source of controlling the droplet size and the mass post injector closing for a given injector was the temperature. It was found that the end of injection behavior is a highly dynamic, complex event including, but not limited to, effects from the injector design, deposit concentration, and fuel type.
Book Synopsis Modeling Injection and Ignition in Direct Injection Natural Gas Engines by : Xu Jr Cheng
Download or read book Modeling Injection and Ignition in Direct Injection Natural Gas Engines written by Xu Jr Cheng and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Liquid Sprays and Flow Studies in the Direct-injection Diesel Engine Under Motored Conditions by :
Download or read book Liquid Sprays and Flow Studies in the Direct-injection Diesel Engine Under Motored Conditions written by and published by . This book was released on 1988 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Injection and Ignition in Direct Injection Natural Gas Engines by : Xu (Stewart). Cheng
Download or read book Modeling Injection and Ignition in Direct Injection Natural Gas Engines written by Xu (Stewart). Cheng and published by . This book was released on 2008 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increasing concerns about the harmful effects of conventional liquid fossil fuel emissions, natural gas has become a very attractive alternative fuel to power prime movers and stationary energy conversion devices. This research studies the injection and ignition numerically for natural gas (mainly methane) as a fuel applied to diesel engine.Natural gas injector and glow plug ignition enhancement are two of the most technical difficulties for direct injection natural gas engine design. This thesis models the natural gas injector, and studies the characteristics of the internal flow in the injector and natural gas jet in the combustion chamber during the injection process. The poppet valve model and pintle valve model are the first reported models to simulate the natural gas injector to improve the traditional velocity and pressure boundary conditions.This thesis also successfully models the glow plug assisted natural gas ignition and combustion processes by developing a glow plug discretized model and a novel virtual gas sub-layer model. Glow plug discretized model can describe the transient heat transfer, and adequately represents the thin layers of heat penetration and the local temperature difference due to the cold gas jet impingement. The virtual gas sub-layer model considers complicated physical processes, such as chemical reaction, heat conduction, and mass diffusion within the virtual sub-layers without significantly increasing computational time and load.KIVA-3V CFD code was chosen to simulate the fluid flow. Since the KIVA-3V is designed specifically for engine research application with conventional liquid fuels, many modifications have been implemented to facilitate this research.
Book Synopsis The Effects of Spray Characteristics on Combustion and Emission Performance of a Two-stroke Direct-injection Engine by : Mark Casarella
Download or read book The Effects of Spray Characteristics on Combustion and Emission Performance of a Two-stroke Direct-injection Engine written by Mark Casarella and published by . This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fuel Systems for IC Engines by : Institution of Mechanical Engineers
Download or read book Fuel Systems for IC Engines written by Institution of Mechanical Engineers and published by Elsevier. This book was released on 2012-03-06 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the papers from the latest conference in this successful series on fuel injection systems for internal combustion engines. It is vital for the automotive industry to continue to meet the demands of the modern environmental agenda. In order to excel, manufacturers must research and develop fuel systems that guarantee the best engine performance, ensuring minimal emissions and maximum profit. The papers from this unique conference focus on the latest technology for state-of-the-art system design, characterisation, measurement, and modelling, addressing all technological aspects of diesel and gasoline fuel injection systems. Topics range from fundamental fuel spray theory, component design, to effects on engine performance, fuel economy and emissions. Presents the papers from the IMechE conference on fuel injection systems for internal combustion engines Papers focus on the latest technology for state-of-the-art system design, characterisation, measurement and modelling; addressing all technological aspects of diesel and gasoline fuel injection systems Topics range from fundamental fuel spray theory and component design to effects on engine performance, fuel economy and emissions
Book Synopsis Flow Characteristics of Natural-gas from an Outward-opening Nozzle for Direct Injection Engines by :
Download or read book Flow Characteristics of Natural-gas from an Outward-opening Nozzle for Direct Injection Engines written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Intake Flow on Mixing and Combustion in Direct Injection Diesel Engines Using Multidimensional Modeling by : Philip William Stephenson
Download or read book Effects of Intake Flow on Mixing and Combustion in Direct Injection Diesel Engines Using Multidimensional Modeling written by Philip William Stephenson and published by . This book was released on 1995 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Two-dimensional Analysis of Two-phase Reacting Flow in a Firing Direct-injection Diesel Engine by :
Download or read book Two-dimensional Analysis of Two-phase Reacting Flow in a Firing Direct-injection Diesel Engine written by and published by . This book was released on 1989 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cylinder Gas Flow in Direct Injection Diesel Engines with Re-entrant Combustion Chambers by : E. I. Khadr
Download or read book Cylinder Gas Flow in Direct Injection Diesel Engines with Re-entrant Combustion Chambers written by E. I. Khadr and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Fuel Injection and Intake Airflow on Direct-injection Spark-ignition Combustion by : Won-Seok Chang
Download or read book Effects of Fuel Injection and Intake Airflow on Direct-injection Spark-ignition Combustion written by Won-Seok Chang and published by . This book was released on 2003 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-pressure Direct-injection of Natural Gas with Entrained Diesel Into a Compression-ignition Engine by :
Download or read book High-pressure Direct-injection of Natural Gas with Entrained Diesel Into a Compression-ignition Engine written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-pressure direct-injection (HPDI) of natural gas in a compression ignition engine has the potential to reduce demand for petroleum derived fuels and significantly reduce the level of pollutants and greenhouse gases emitted from heavy duty transport vehicles. A new HPDI injector was tested where diesel is injected into a gas/diesel reservoir in the injector and the diesel and gas are then co-injected into the combustion chamber. In order to identify interactions between the diesel and gas in the reservoir, two different injector geometries were tested: prototypes A and B. Prototype B had reduced reservoir volume to increase gas velocity inside the injector. A majority of the tests were conducted in a single-cylinder test engine derived from a Cummins ISX diesel engine. As prototype A was being modified to create Prototype B this test engine was moved to a larger test cell. After updating the electrical, mechanical, and safety systems, the test engine in the new test cell was found to run repeatably; however, emissions comparisons between both test cells was not possible due to different analyzers being used. Single gas and double gas injections were conducted for both injector prototypes. The single gas injection tests found that increasing the diesel injection mass reduced the mass of gas injected. Increased diesel injection mass also shortened ignition delay, reduced unburned and partially burned fuel and increased NOx emissions. Holding the diesel injection mass constant and reducing the gas injection mass had the same effect as increasing diesel on ignition delay and gaseous emissions. If the diesel injection mass was kept constant and a second gas injection was added, the heat release due to the first injection decreased and the start of combustion was retarded. This appears to have occurred because some of the diesel was carried into the cylinder by the second injection and less diesel was available in the first injection to promote ignition. Double gas.
Book Synopsis Flow Visualisation of Natural Gas Fuel Injection by : Eric Jason Brombacher
Download or read book Flow Visualisation of Natural Gas Fuel Injection written by Eric Jason Brombacher and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flow and Combustion in Direct Injection Spark Ignition Engines by : Blane Scott
Download or read book Flow and Combustion in Direct Injection Spark Ignition Engines written by Blane Scott and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of In-cylinder Flows in a Direct Injection Compression Ignition Engine Using Particle Image Velocimetry by : Brian J. Stapleton
Download or read book An Investigation of In-cylinder Flows in a Direct Injection Compression Ignition Engine Using Particle Image Velocimetry written by Brian J. Stapleton and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Fuel Injector Type on Performance and Emissions of Reverse-flow Combustor by : Carl T. Norgren
Download or read book Effect of Fuel Injector Type on Performance and Emissions of Reverse-flow Combustor written by Carl T. Norgren and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
