Download or read book Investigation and Demonstration of a Rich Combustor Cold start Device for Alcohol fueled Engines written by and published by . This book was released on 1998 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have completed a study in which they investigated the use of a rich combustor to aid in cold starting spark-ignition engines fueled with either neat ethanol or neat methanol. The rich combustor burns the alcohol fuel outside the engine under fuel-rich conditions to produce a combustible product stream that is fed to the engine for cold starting. The rich combustor approach significantly extends the cold starting capability of alcohol-fueled engines. A design tool was developed that simulates the operation of the combustor and couples it to an engine/vehicle model. This tool allows the user to determine the fuel requirements of the rich combustor as the vehicle executes a given driving mission. The design tool was used to design and fabricate a rich combustor for use on a 2.8 L automotive engine. The system was tested using a unique cold room that allows the engine to be coupled to an electric dynamometer. The engine was fitted with an aftermarket engine control system that permitted the fuel flow to the rich combustor to be programmed as a function of engine speed and intake manifold pressure. Testing indicated that reliable cold starts were achieved on both neat methanol and neat ethanol at temperatures as low as -20 C. Although starts were experienced at temperatures as low as -30 C, these were erratic. They believe that an important factor at the very low temperatures is the balance between the high mechanical friction of the engine and the low energy density of the combustible mixture fed to the engine from the rich combustor.
Download or read book Investigation and Demonstration of a Rich Combustor Cold start Device for Alcohol fueled Engines written by J. W. Hodgson and published by . This book was released on 1998 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preprints of the Annual Automotive Technology Development Contractors Coordination Meeting written by and published by . This book was released on 1996 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Automotive Technologies Annual Report to Congress Fiscal Year 1996 written by and published by . This book was released on 1998 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling and Cold Start in Alcohol fueled Engines written by Anthony J. Markel and published by . This book was released on 1998 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neat alcohol fuels offer several benefits over conventional gasoline in automotive applications. However, their low vapor pressure and high heat of vaporization make it difficult to produce a flammable vapor composition from a neat alcohol fuel during a start under col ambient conditions. Various methods have been introduced to compensate for this deficiency. In this study, we applied computer modeling and simulation to evaluate the potential of four cold-start technologies for engines fueled by near-neat alcohol. The four technologies were a rich combustor device, a partial oxidation reactor, a catalytic reformer, and an enhanced ignition system. We ranked the competing technologies by their ability to meet two primary criteria for cold starting an engine at -25 deg. C and also by several secondary parameters related to commercialization. Our analysis results suggest that of the four technologies evaluated, the enhanced ignition system is the best option for further development.
Download or read book A Thermal Model to Evaluate Sub freezing Startup for a Direct Hydrogen Hybrid Fuel Cell Vehicle Polymer Electrolyte Fuel Cell Stack and System written by Meenakshi Sundaresan and published by . This book was released on 2004 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Partial Oxidation for Improved Cold Starts in Alcohol fueled Engines written by and published by . This book was released on 1998 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alcohol fuels exhibit poor cold-start performance because of their low volatility. Neat alcohol engines become difficult, if not impossible, to start at temperatures close to or below freezing. Improvements in the cold-start performance (both time to start and emissions) are essential to capture the full benefits of alcohols as an alternative transportation fuel. The objective of this project was to develop a neat alcohol partial oxidation (POX) reforming technology to improve an alcohol engine's ability to start at low temperatures (as low as -30 C) and to reduce its cold-start emissions. The project emphasis was on fuel-grade ethanol (E95) but the technology can be easily extended to other alcohol fuels. Ultimately a compact, on-vehicle, ethanol POX reactor was developed as a fuel system component to produce a hydrogen-rich, fuel-gas mixture for cold starts. The POX reactor is an easily controllable combustion device that allows flexibility during engine startup even in the most extreme conditions. It is a small device that is mounted directly onto the engine intake manifold. The gaseous fuel products (or reformate) from the POX reactor exit the chamber and enter the intake manifold, either replacing or supplementing the standard ethanol fuel consumed during an engine start. The combustion of the reformate during startup can reduce engine start time and tail-pipe emissions.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reduction of Hydrocarbons in the Cold Start in an Alcohol Burning Internal Combustion Engine written by Ryan Kyle Gehmlich and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alcohol fuels offer a potential alternative to gasoline in modern spark ignition engines. Benefits include reduction in greenhouse gas emissions, lesser dependence on foreign oil assets, and increased thermal efficiency. However, due to their large latent heats of vaporization and low vapor pressures, it can be difficult to produce a flammable vapor composition during the cold start transient. Various methods have been introduced to compensate for this deficiency when running engines on pure or highly concentrated alcohol fuels. One proposed method is the addition of a hydrogen-rich gas to the intake during the cold start transient to open the flammability limits of the mixture to a wider and more stable range. While several studies have investigated cold start performance and reliability using alcohol fuels, few have measured and reported on the actual engine-out cold start hydrocarbon emissions of systems using alcohol fuels enhanced by hydrogen. A 2-cylinder, 0.745 L 4-stroke engine was modified to run with hydrogen fumigation into a custom mixing chamber and intake manifold. The study compares cold start hydrocarbon emissions performance using ethanol and methanol fuels with and without hydrogen enrichment during the cold start transient. The hydrogen flow rate used for fumigation was 15 SLPM. Using moderately lean cold start calibrations, an average of 36% reductions in hydrocarbon emissions was measured for ethanol and 16% reduction for methanol. Furthermore, nitrogen oxide emissions were reduced by 34% for ethanol and 32% for methanol. Carbon monoxide emissions, however, increased by 100% and 21%, respectively. Further leaning of the cold start calibration was found to be possible, which would further reduce both hydrocarbon emissions and carbon monoxide emissions for the alcohol fuels.
Download or read book Annual Report to Congress on the Automotive Technology Development Program written by and published by . This book was released on 1994 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Book Publishing Record written by and published by . This book was released on 1999 with total page 1476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tuning Accel DFI 6 0 Programmable Fuel Injection written by Ray Bohacz and published by Penguin. This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to understanding, modifying, programming, and tuning Accel's programmable digital fuel injection system, this book includes sections on Basic Management Theory and Components, Fuel Flow Dynamics, the ECU and Emissions Compliance, Matching Intake Manifold to Engine, Choosing the Proper Accel/DFI ECU, and more.
Download or read book Cold Starting an Alcohol Fueled Engine with Ultrasonic Fuel Atomization written by United States Environmental Protection Agency (EPA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-24 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold Starting an Alcohol Fueled Engine With Ultrasonic Fuel Atomization
Download or read book Energy a Continuing Bibliography with Indexes written by and published by . This book was released on 1983 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Official Gazette of the United States Patent and Trademark Office written by and published by . This book was released on 1983 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
