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Researches on Direct Injection in Internal-Combustion Engines

Description: Report presenting a solution for reducing the fatigue of the Diesel engine by permitting the preservation of its components and, at the same time, raising its specific horsepower to a par with that of carburetor engines, while maintaining for the Diesel engine its perogative of burning heavy fuel under optimum economical conditions. The feeding of Diesel engines by injection pumps actuated by engine compression achieves the required high speeds of injection readily and permits rigorous control of the combustible charge introduced into each cylinder and of the peak pressure in the resultant cycle.
Date: November 1941
Creator: Tuscher, Jean E.
Partner: UNT Libraries Government Documents Department

Hesselman Heavy-Oil High-Compression Engine

Description: Memorandum presenting a description of the Hesselman heavy-oil high-compression engine, which is meant to solve many of the problems associated with standard diesel engines. Specific details of the fuel pump, fuel valve, spraying, and process by which the engine functions are provided.
Date: April 1925
Creator: Hesselman, K. J. E.
Partner: UNT Libraries Government Documents Department

Combustion of Liquid Fuels in Diesel Engine

Description: Hitherto, definite specifications have always been made for fuel oils and they have been classified as more or less good or non-utilizable. The present aim, however, is to build Diesel engines capable of using even the poorest liquid fuels and especially the waste products of the oil industry, without special chemical or physical preparation.
Date: October 1924
Creator: Alt, Otto
Partner: UNT Libraries Government Documents Department

Ignition Process in Diesel Engines

Description: This report analyzes the heating and vaporization process of fuel droplets in a compression-ignition engine on the basis of the theory of similitude - according to which, the period for heating and complete vaporization of the average size fuel drop is only a fraction of the actually observed ignition lag. The result is that ignition takes place in the fuel vapor air mixture rather than on the surface of the drop. The theoretical result is in accord with the experimental observations by Rothrock and Waldron. The combustion shock occurring at lower terminal compression temperature, especially in the combustion of coal-tar oil, is attributable to a simultaneous igniting of a larger fuel-vapor volume formed prior to ignition.
Date: June 1936
Creator: Wentzel, W.
Partner: UNT Libraries Government Documents Department

Ignition Points and Combustion Reactions in Diesel Engines: Part 1

Description: The question of whether the fuel should be adapted to the engine or whether it is possible to improve equipment such as carburetors and engines so that as much of the crude oil as possible may be used without further transformation is examined in this report. Various ignition points and fuel mixtures are investigated in this regard.
Date: October 1928
Creator: Tausz, J. & Schulte, F.
Partner: UNT Libraries Government Documents Department

Details of the Construction and Production of Fuel Pumps and Fuel Nozzles for the Airplane Diesel Engine

Description: This report presents investigations into the design and construction of fuel pumps for diesel engines. The results of the pump tests on the engines showed that, with a good cut-off, accurate injection, assured by the proper adjustment of the pump elements, there is a decrease in the consumption of fuel and hence an increase in the rated power of the engine. Some of the aspects investigated include: cam profile, coefficient of discharge, and characteristics of the injection system.
Date: September 1936
Creator: Lubenetsky, W. S.
Partner: UNT Libraries Government Documents Department

Increasing the Volumetric Efficiency of Diesel Engines by Intake Pipes

Description: "Development of a method for calculating the volumetric efficiency of piston engines with intake pipes. Application of this method to the scavenging pumps of two-stroke-cycle engines with crankcase scavenging and to four-stroke-cycle engines. The utility of the method is demonstrated by volumetric-efficiency tests of the two-stroke-cycle engines with crankcase scavenging. Its practical application to the calculation of intake pipes is illustrated by example" (p. 1).
Date: March 1933
Creator: List, Hans
Partner: UNT Libraries Government Documents Department

Standby Generators for North Portal Electrical Loads (SCPB:N/A)

Description: The purpose and objective of this design analysis is to establish the best and most economical way to provide standby power generation required for the North Portal loads. This analysis calculates the size and number of the new standby generators that will supplement the already-specified four 500 kW diesel generator units (7007-GN-401, -402, -403, and -404).
Date: March 31, 1995
Creator: Shane, Y.D.
Partner: UNT Libraries Government Documents Department

R&D Issues in the Office of Energy Efficiency and Renewable Energy

Description: The Office of Energy Efficiency and Renewable Energy (EERE) leads the federal government's research, development, and deployment (RD&D) efforts to provide reliable, affordable, and environmentally sound energy for America's future. EERE's role is to invest in high-risk, high-value research and development that is critical to the Nation's energy future and would not be sufficiently conducted by the private sector acting on its own. EERE also works with stakeholders to develop programs and policies to facilitate the deployment of advanced clean energy technologies and practices.
Date: August 24, 2003
Creator: Baldwin, S.
Partner: UNT Libraries Government Documents Department

Heavy Vehicle Propulsion Materials Program

Description: The objective of the Heavy Vehicle Propulsion Materials Program is to develop the enabling materials technology for the clean, high-efficiency diesel truck engines of the future. The development of cleaner, higher-efficiency diesel engines imposes greater mechanical, thermal, and tribological demands on materials of construction. Often the enabling technology for a new engine component is the material from which the part can be made. The Heavy Vehicle Propulsion Materials Program is a partnership between the Department of Energy (DOE), and the diesel engine companies in the United States, materials suppliers, national laboratories, and universities. A comprehensive research and development program has been developed to meet the enabling materials requirements for the diesel engines of the future. Advanced materials, including high-temperature metal alloys, intermetallics, cermets, ceramics, amorphous materials, metal- and ceramic-matrix composites, and coatings, are investigated for critical engine applications.
Date: April 26, 1999
Creator: Diamond, S. & Johnson, D. R.
Partner: UNT Libraries Government Documents Department

The Detroit Diesel DELTA Engine for Light Trucks and SUVs - Year 2000 Update

Description: Detroit Diesel Corporation (DDC) is developing the DELTA 4.0L V6 engine, specifically for the North American light truck market. This market poses unique requirements for a diesel engine, necessitating a clean sheet engine design. DELTA was developed from a clean sheet of paper, with the first engine firing just 228 days later. The process began with a Quality Function Deployment (QFD) analysis, which prioritized the development criteria. The development process integrated a co-located, fully cross-functional team. Suppliers were fully integrated and maintained on-site representation. The first demonstration vehicle moved under its own power 12 weeks after the first engine fired. It was demonstrated to the automotive press 18 days later. DELTA has repeatedly demonstrated its ability to disprove historical North American diesel perceptions and compete directly with gasoline engines. This paper outlines the Generation 0.0 development process and briefly defines the engine. A brief indication of the Generation 0.5 development status is given.
Date: June 19, 2000
Creator: Hakim, Nabil S.; Freese, Charles E. & Miller, Stanley P.
Partner: UNT Libraries Government Documents Department

NOx Adsorbers for Heavy Duty Truck Engines-Testing and Simulation

Description: This feasibility study of NOx adsorbers in heavy-duty diesel engines examined three configurations (dual-leg, single-leg and single-leg-bypass) in an integrated experimental setup, composed of a Detroit Diesel Class-8 truck engine, a catalyzed diesel particulate filter and the NOx absorber system. The setup also employed a reductant injection concept, sensors and advanced control strategies.
Date: August 25, 2002
Creator: Hakim, N; Hoelzer, J. & Liu, Y.
Partner: UNT Libraries Government Documents Department

Exhaust Speciation Studies for Aftertreatment Technology Development

Description: Lean NOx reduction shown to be strongly affected by HC reductant composition. Possibility exists to tailor exhaust HC composition by manipulating HC post-injection process. Why is this relevant if lean NOx catalysis ''isn't going to work'' ? Lean NOx (esp. with post-injection of HC) offers unmatched ''passiveness'' NOx adsorber technology will require reductant - potentially introduced the same way
Date: August 20, 2000
Creator: Graves, Ron
Partner: UNT Libraries Government Documents Department