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Smart Engines Via Advanced Model Based Controls

Description: A ''new'' process for developing control systems - Less engine testing - More robust control system - Shorter development cycle time - ''Smarter'' approach to engine control - On-board models describe engine behavior - Shorter, systematic calibration process - Customer and legislative requirements designed-in.
Date: August 20, 2000
Creator: Allain, Marc
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

USE OF A DIESEL FUEL PROCESSOR FOR RAPID AND EFFICIENT REGENERATION OF SINGLE LEG NOX ADSORBER SYSTEMS

Description: Lean NOx adsorber systems are one of the primary candidate technologies for the control of NOx from diesel engines to meet the 2007-2010 US emissions regulations, which require a 90% reduction of NOx from the 2004 regulations. Several of the technical challenges facing this technology are regeneration at low exhaust temperatures and the efficient use of diesel fuel to minimize fuel penalty. A diesel processor system has been developed and tested in a single leg NOx adsorber configuration on a d… more
Date: August 24, 2003
Creator: Betta, R; Cizeron, J; Sheridan, D & Davis, T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Jet Breakup and Spray Formation in a Diesel Engine

Description: The breakup of injected fuel into spray is of key interest to the design of a fuel efficient, nonpolluting diesel engine. We report preliminary progress on the numerical simulation of diesel fuel injection spray with the front tracking code FronTier. Our simulation design is set to match experiments at ANL, and our present agreement is semi-quantitative. Future efforts will include mesh refinement studies, which will better model the turbulent flow.
Date: June 17, 2003
Creator: Glimm, J.; Li, X.; Kim, M. N.; Oh, W.; Marchese, A.; Samulyak, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Resolving Emissions Dynamics via Mass Spectrometry: Time Resolved Measurements of Emission Transients by Mass Spectrometry

Description: Transient emissions occur throughout normal engine operation and can significantly contribute to overall system emissions. Such transient emissions may originate from various sources including cold start, varying load and exhaust-gas recirculation (EGR) rates; all of which are dynamic processes in the majority of engine operation applications (1). Alternatively, there are systems which are inherently dynamic even at steady-state engine-operation conditions. Such systems include catalytic exhaus… more
Date: August 20, 2000
Creator: Partridge, William P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

An Inverted Co-Flow Diffusion Flame for Producing Soot

Description: We developed an inverted, co-flow, methane/air/nitrogen burner that generates a wide range of soot particles sizes and concentrations. By adjusting the flow rates of air, methane, and nitrogen in the fuel, the mean electric mobility diameter and number concentration are varied. Additional dilution downstream of the flame allows us to generate particle concentrations spanning those produced by spark-ignited and diesel engines: particles with mean diameters between 50 and 250 nm and number concen… more
Date: June 21, 2005
Creator: Stipe, Christopher B.; Higgins, Brian S.; Lucas, Donald; Koshland, Catherine P. & Sawyer, Robert F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Late - Cycle Injection of Air/Oxygen - Enriched Air for Diesel Exhaust Emissions Control

Description: Reduce the ''Engine Out'' particulates using the ''In Cylinder'' technique of late cycle auxiliary gas injection (AGI). Reduce the ''Engine Out'' NOx by combining AGI with optimization of fuel injection parameters. Maintain or Improve the Fuel Efficiency.
Date: August 20, 2000
Creator: Mather, Daniel
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Opportunities for Low Cost Titanium in Reduced Fuel Consumption, Improved Emissions, and Enhanced Durability Heavy Duty Vehicles

Description: The purpose of this study was to determine which components of heavy-duty highway vehicles are candidates for the substitution of titanium materials for current materials if the cost of those Ti components is very significantly reduced from current levels. The processes which could be used to produce those low cost components were also investigated. Heavy-duty highway vehicles are defined as all trucks and busses included in Classes 2C through 8. These include heavy pickups and vans above 8,500… more
Date: July 22, 2002
Creator: Kraft, E. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

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 partnersh… more
Date: April 26, 1999
Creator: Diamond, Sidney & Johnson, D. Ray
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Cummins Light Truck Diesel Engine Progress Report

Description: Cummins has studied requirements of the Light Truck Automotive market in the United States and believes that the proposed V-family of engines meets those needs. Design and development of the V-family engine system continues and has expanded. The engine system is a difficult one, since the combined requirements of a very fuel-efficient commercial diesel, and the performance and sociability requirements of a gasoline engine are needed. Results of testing show that the engine can meet requirements… more
Date: May 14, 2001
Creator: Stang, John H.; Koeberlein, David E. & Ruth, Michael J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of high temperature liquid lubricants for low-heat rejection heavy duty diesel engines

Description: Objective was to develop a liquid lubricant that will allow advanced diesel engines to operate at top ring reversal temperatures approaching 500 C and lubricant sump temperatures approaching 250 C. Base stock screening showed that aromatic esters and diesters has the lowest deposit level, compared to polyol esters, poly-alpha-olefins, or refined mineral oil of comparable viscosity. Classical aryl and alkyl ZDP antiwear additives are ineffective in reducing wear with aromatic esters; the phospha… more
Date: March 1, 1993
Creator: Wiczynski, P. D. & Marolewski, T. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Proof-of-Concept Units for the Advanced Medium-Sized Mobile Power Sources (AMMPS) Program

Description: The purpose of this report is to document the development of the proof-of-concept units within the Advanced Medium-sized Mobile Power Sources (AMMPS) program. The design used a small, lightweight diesel engine, a permanent magnet alternator, power electronics and digital controls as outlined in the philosophy detailed previously. One small proof-of-concept unit was completed and delivered to the military. The unit functioned well but was not optimized at the time of delivery to the military. A … more
Date: April 3, 2002
Creator: Andriulli, JB
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DOE fundamentals handbook: Mechanical science. Volume 2

Description: The Mechanical Science Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of mechanical components and mechanical science. The handbook includes information diesel engines, heat exchangers, pumps, valves, and miscellaneous mechanical components. This information will provide personnel with a foundation for understanding the construc… more
Date: January 1, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Clean and Efficient Diesel Engine

Description: Task 1 was to design study for fuel-efficient system configuration. The objective of task 1 was to perform a system design study of locomotive engine configurations leading to a 5% improvement in fuel efficiency. Modeling studies were conducted in GT-Power to perform this task. GT-Power is an engine simulation tool that facilitates modeling of engine components and their system level interactions. It provides the capability to evaluate a variety of engine technologies such as exhaust gas circul… more
Date: December 31, 2010
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Diesel Engine Light Truck Application

Description: The Diesel Engine Light Truck Application (DELTA) program consists of two major contracts with the Department of Energy (DOE). The first one under DE-FC05-97-OR22606, starting from 1997, was completed in 2001, and consequently, a final report was submitted to DOE in 2003. The second part of the contract was under DE-FC05-02OR22909, covering the program progress from 2002 to 2007. This report is the final report of the second part of the program under contract DE-FC05-02OR22909. During the cours… more
Date: December 31, 2007
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Off-Highway Heavy Vehicle Diesel Efficiency Improvement and Emissions Reduction

Description: Cummins Inc. is a world leader in the development and production of diesel engines for on-highway vehicles, off-highway industrial machines, and power generation units. Cummins Inc. diesel products cover a 50-3000 HP range. The power range for this project includes 174-750 HP to achieve EPA's Tier 3 emission levels of 4.0 NOx+NMHC gm/kW-hr and 0.2 PM gm/kWhr and Tier 4 Interim emission levels of 2.0 gm/kW-hr NOx and 0.02 gm/kW-hr PM. Cummins' anticipated product offerings for Tier 4 in this ran… more
Date: December 31, 2005
Creator: Rumsey, Jennifer
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Demonstrating Ultra-Low Diesel Vehicle Emissions

Description: Evaluate performance of near-term exhaust emissions control technologies on a modern diesel vehicle over transient drive cycles; Phase 1: Independent (separate) evaluations of engine-out, OEM catalysts, CDPF, and NOx adsorber (Completed March 2000); Phase 2: Combine NOx adsorber and CDPF to evaluate/demonstrate simultaneous reduction of NOx and PM (Underway--interim results available); Establish potential for these technologies to help CIDI engines meet emission reduction targets; and Investiga… more
Date: August 20, 2000
Creator: McGill, R.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

HCCI Combustion Fundamentals: In-Cylinder Diagnostics and Kinetic-Rate Computations

Description: Substantial progress has been made in reducing emissions and improving the performance of Diesel engines. Appears to be a lower limit for engine-out NOX of about 1 g/hp-hr. Serious difficulty in meeting Tier II or newly proposed H-D standards. Homogeneous charge compression ignition (HCCI) is an alternative IC engine combustion process that has the potential to: Provide diesel-like or higher efficiencies. Very low engine-out NOX due to low combustion temperatures. Very low particulate (PM) emis… more
Date: August 20, 2000
Creator: Dec, John E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

COMPARISON OF PLASMA-CATALYST AND ACTIVE LEAN NOx CATALYST

Description: A number of NO{sub x} control systems are being discussed for potential application to diesel engines. Unfortunately, it can be difficult to compare systems on an equal basis because data are run under different conditions, or reported against different test cycles, or not shown over a range of operating conditions. In addition, the fuel consumption penalty associated with the NO{sub x} control technologies is not always reported. In this paper, we compare two diesel NO{sub x} aftertreatment sy… more
Date: August 20, 2000
Creator: Hoard, John
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Non-thermal plasma based technologies for the after-treatment of automotive exhaust particulates and marine diesel exhaust NOx

Description: The trend in environmental legislation is such that primary engine modifications will not be sufficient to meet all future emissions requirements and exhaust aftertreatment technologies will need to be employed. One potential solution that is well placed to meet those requirements is non-thermal plasma technology. This paper will describe our work with some of our partners in the development of a plasma based diesel particulate filter (DPF) and plasma assisted catalytic reduction (PACR) for NOx… more
Date: August 24, 2003
Creator: McAdams, R.; Beech, P.; Gillespie, R.; Guy, C.; Jones, S.; Liddell, T. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Combined Catalyzed Soot Filter and SCR Catalyst System for Diesel Engine Emission Reduction

Description: Substantially reduces particulate emission for diesel vehicles Up to 90% effective against carbonaceous particulate matter Significantly reduces CO and HC Filter regenerates at normal diesel operation temperatures Removable design for easy cleaning and maintenance.
Date: August 20, 2000
Creator: Kakwani, R.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Inert Gas Generation Utilizing Diesel Exhaust

Description: The generation of inert gas from 60 KW diesel engine exhaust by catalytic reduction of O{sub 2} and NO{sub x} has been demonstrated. Measured O{sub 2} levels were < 10 V{sub ppm} and NO{sub x} levels were {approx} 0.1 V{sub ppm} over a wide range of equivalence ratios. Durability of the catalytic converter was demonstrated up to 200 hours operating time at two diesel engine load conditions. Effective catalyst operating range was stoichiometric to rich fuel/air ratios. Optimum operation is at… more
Date: January 1, 1981
Creator: Osgerby, I. T. & Durilla, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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