The Experts below are selected from a list of 7263 Experts worldwide ranked by ideXlab platform
Douglas M. Yost - One of the best experts on this subject based on the ideXlab platform.
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Level Road Acceleration, Fuel Consumption, and Steady-Pull Evaluations Using DF-2 and JP-8 Fuels
1992Co-Authors: Ruben A. Alvarez, Douglas M. YostAbstract:Abstract : Limited evaluations were conducted on the M998 High Mobility Multipurpose Wheeled Vehicle (HMMWV) and the M977 Heavy Expanded Mobility Tactical Truck (HEMTT). The data that these evaluations would yield included startability and idle quality, acceleration rates, and fuel consumption. The previously tested M88Al Medium Recovery Vehicle was also evaluated. However, these evaluations would determine if a Teledyne Continental Motors-recommended fuel injection and metering pump adjustment would increase performance and allow the engine to achieve its Rated Horsepower. As a result of these evaluations, it was determined that the conversion to JP-8 from DF-2 increased the acceleration time of both the M998 and M977 vehicles. Also, the fuel consumption increased on both vehicles; however, the increases were below that predicted by the heating value difference between the two fuels. The M88Al exhibited an increase in power while pulling its own weight after the pump adjustment; however, the power increase was not noticeable while towing the M1A1 tank.... M998 HMMWV, M977 HEMTT, M88Al Recovery Vehicle, JP-8 Conversion, Injector Pump Adjustment.
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Level road acceleration, fuel consumption, and steady-pull evaluations using DF-2 and JP-8 fuels. Interim report, June 1991-January 1992
1992Co-Authors: Ruben A. Alvarez, Douglas M. YostAbstract:Limited evaluations were conducted on the M998 High Mobility Multipurpose Wheeled Vehicle (HMMWV) and the M977 Heavy Expanded Mobility Tactical Truck (HEMTT). The data that these evaluations would yield included startability and idle quality, acceleration rates, and fuel consumption. The previously tested M88Al Medium Recovery Vehicle was also evaluated. However, these evaluations would determine if a Teledyne Continental Motors-recommended fuel injection and metering pump adjustment would increase performance and allow the engine to achieve its Rated Horsepower. As a result of these evaluations, it was determined that the conversion to JP-8 from DF-2 increased the acceleration time of both the M998 and M977 vehicles. Also, the fuel consumption increased on both vehicles; however, the increases were below that predicted by the heating value difference between the two fuels. The M88Al exhibited an increase in power while pulling its own weight after the pump adjustment; however, the power increase was not noticeable while towing the MIAI tank.... M998 HMMWV, M977 HEMTT, M88Al Recovery Vehicle, JP-8 Conversion, Injecto Pump Adjustment.
Kent C. Johnson - One of the best experts on this subject based on the ideXlab platform.
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Evaluations of in-use emission factors from off-road construction equipment
Atmospheric Environment, 2016Co-Authors: Tanfeng Cao, Thomas D. Durbin, Robert L. Russell, David R. Cocker, George Scora, Hector Maldonado, Kent C. JohnsonAbstract:Abstract Gaseous and particle emissions from construction engines contribute an important fraction of the total air pollutants released into the atmosphere and are gaining increasing regulatory attention. Robust quantification of nitrogen oxides (NO x ) and particulate matter (PM) emissions are necessary to inventory the contribution of construction equipment to atmospheric loadings. Theses emission inventories require emissions factors from construction equipment as a function of equipment type and modes of operation. While the development of portable emissions measurement systems (PEMS) has led to increased studies of construction equipment emissions, emissions data are still much more limited than for on-road vehicles. The goal of this research program was to obtain accurate in-use emissions data from a test fleet of newer construction equipment (model year 2002 or later) using a Code of Federal Requirements (CFR) compliant PEMS system. In-use emission measurements were made from twenty-seven pieces of construction equipment, which included four backhoes, six wheel loaders, four excavators, two scrapers (one with two engines), six bulldozers, and four graders. The engines ranged in model year from 2003 to 2012, in Rated Horsepower (hp) from 92 to 540 hp, and in hours of operation from 24 to 17,149 h. This is the largest study of off-road equipment emissions using 40 CFR part 1065 compliant PEMS equipment for all regulated gaseous and particulate emissions.
Ruben A. Alvarez - One of the best experts on this subject based on the ideXlab platform.
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Level Road Acceleration, Fuel Consumption, and Steady-Pull Evaluations Using DF-2 and JP-8 Fuels
1992Co-Authors: Ruben A. Alvarez, Douglas M. YostAbstract:Abstract : Limited evaluations were conducted on the M998 High Mobility Multipurpose Wheeled Vehicle (HMMWV) and the M977 Heavy Expanded Mobility Tactical Truck (HEMTT). The data that these evaluations would yield included startability and idle quality, acceleration rates, and fuel consumption. The previously tested M88Al Medium Recovery Vehicle was also evaluated. However, these evaluations would determine if a Teledyne Continental Motors-recommended fuel injection and metering pump adjustment would increase performance and allow the engine to achieve its Rated Horsepower. As a result of these evaluations, it was determined that the conversion to JP-8 from DF-2 increased the acceleration time of both the M998 and M977 vehicles. Also, the fuel consumption increased on both vehicles; however, the increases were below that predicted by the heating value difference between the two fuels. The M88Al exhibited an increase in power while pulling its own weight after the pump adjustment; however, the power increase was not noticeable while towing the M1A1 tank.... M998 HMMWV, M977 HEMTT, M88Al Recovery Vehicle, JP-8 Conversion, Injector Pump Adjustment.
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Level road acceleration, fuel consumption, and steady-pull evaluations using DF-2 and JP-8 fuels. Interim report, June 1991-January 1992
1992Co-Authors: Ruben A. Alvarez, Douglas M. YostAbstract:Limited evaluations were conducted on the M998 High Mobility Multipurpose Wheeled Vehicle (HMMWV) and the M977 Heavy Expanded Mobility Tactical Truck (HEMTT). The data that these evaluations would yield included startability and idle quality, acceleration rates, and fuel consumption. The previously tested M88Al Medium Recovery Vehicle was also evaluated. However, these evaluations would determine if a Teledyne Continental Motors-recommended fuel injection and metering pump adjustment would increase performance and allow the engine to achieve its Rated Horsepower. As a result of these evaluations, it was determined that the conversion to JP-8 from DF-2 increased the acceleration time of both the M998 and M977 vehicles. Also, the fuel consumption increased on both vehicles; however, the increases were below that predicted by the heating value difference between the two fuels. The M88Al exhibited an increase in power while pulling its own weight after the pump adjustment; however, the power increase was not noticeable while towing the MIAI tank.... M998 HMMWV, M977 HEMTT, M88Al Recovery Vehicle, JP-8 Conversion, Injecto Pump Adjustment.
Tanfeng Cao - One of the best experts on this subject based on the ideXlab platform.
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Evaluations of in-use emission factors from off-road construction equipment
Atmospheric Environment, 2016Co-Authors: Tanfeng Cao, Thomas D. Durbin, Robert L. Russell, David R. Cocker, George Scora, Hector Maldonado, Kent C. JohnsonAbstract:Abstract Gaseous and particle emissions from construction engines contribute an important fraction of the total air pollutants released into the atmosphere and are gaining increasing regulatory attention. Robust quantification of nitrogen oxides (NO x ) and particulate matter (PM) emissions are necessary to inventory the contribution of construction equipment to atmospheric loadings. Theses emission inventories require emissions factors from construction equipment as a function of equipment type and modes of operation. While the development of portable emissions measurement systems (PEMS) has led to increased studies of construction equipment emissions, emissions data are still much more limited than for on-road vehicles. The goal of this research program was to obtain accurate in-use emissions data from a test fleet of newer construction equipment (model year 2002 or later) using a Code of Federal Requirements (CFR) compliant PEMS system. In-use emission measurements were made from twenty-seven pieces of construction equipment, which included four backhoes, six wheel loaders, four excavators, two scrapers (one with two engines), six bulldozers, and four graders. The engines ranged in model year from 2003 to 2012, in Rated Horsepower (hp) from 92 to 540 hp, and in hours of operation from 24 to 17,149 h. This is the largest study of off-road equipment emissions using 40 CFR part 1065 compliant PEMS equipment for all regulated gaseous and particulate emissions.
Hector Maldonado - One of the best experts on this subject based on the ideXlab platform.
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Evaluations of in-use emission factors from off-road construction equipment
Atmospheric Environment, 2016Co-Authors: Tanfeng Cao, Thomas D. Durbin, Robert L. Russell, David R. Cocker, George Scora, Hector Maldonado, Kent C. JohnsonAbstract:Abstract Gaseous and particle emissions from construction engines contribute an important fraction of the total air pollutants released into the atmosphere and are gaining increasing regulatory attention. Robust quantification of nitrogen oxides (NO x ) and particulate matter (PM) emissions are necessary to inventory the contribution of construction equipment to atmospheric loadings. Theses emission inventories require emissions factors from construction equipment as a function of equipment type and modes of operation. While the development of portable emissions measurement systems (PEMS) has led to increased studies of construction equipment emissions, emissions data are still much more limited than for on-road vehicles. The goal of this research program was to obtain accurate in-use emissions data from a test fleet of newer construction equipment (model year 2002 or later) using a Code of Federal Requirements (CFR) compliant PEMS system. In-use emission measurements were made from twenty-seven pieces of construction equipment, which included four backhoes, six wheel loaders, four excavators, two scrapers (one with two engines), six bulldozers, and four graders. The engines ranged in model year from 2003 to 2012, in Rated Horsepower (hp) from 92 to 540 hp, and in hours of operation from 24 to 17,149 h. This is the largest study of off-road equipment emissions using 40 CFR part 1065 compliant PEMS equipment for all regulated gaseous and particulate emissions.
