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Standard

SAE Wind Tunnel Test Procedure for Trucks and Buses

2017-04-07
WIP
J1252
The scope of this SAE Recommended Practice is sufficiently broad that it encompasses the full range of full-scale medium and heavy duty vehicles represented as either full-scale or reduced-scale wind tunnel models. The document provides guidance for wind tunnel testing to support current vehicle characterization, vehicle development, vehicle concept development, and vehicle component development.
Standard

SAE Wind Tunnel Test Procedure for Trucks and Buses

1979-08-01
HISTORICAL
J1252_197908
The scope of this SAE Recommended Practice is sufficiently broad that it encompasses the full range of full-scale medium and heavy duty vehicles represented as either full-scale or reduced-scale wind tunnel models. The document provides guidance for wind tunnel testing to support current vehicle characterization, vehicle development, vehicle concept development, and vehicle component development.
Standard

SAE Wind Tunnel Test Procedure for Trucks and Buses

1981-07-01
HISTORICAL
J1252_198107
The objective of this recommended practice is to provide a standard wind tunnel testing procedure for heavy duty trucks and buses. The use of this procedure should improve the comparability of aerodynamic data taken in different wind tunnels and should ensure that good data quality is obtained. The scope of this recommended practice is sufficiently broad that it can encompass the full range of current heavy duty vehicles, vehicle modifications, and prototype configurations. The test procedure describes methods for examination of the vehicle's flow field using surface pressures and flow visualization.
Standard

Joint RCCC/SAE Fuel Consumption Test Procedure (Short Term In-Service Vehicle) Type 1

2011-05-10
CURRENT
J1264_201105
This recommended practice provides minimum requirements for testing components or systems of the type which can be switched from one truck to another with relative ease; i.e., aerodynamic devices, clutch fans, radial tires, and the like. The test utilizes in-service fleet vehicles, operated over representative routes. The relative fuel effectiveness of the component or system under test is determined as a percentage improvement factor. This factor is calculated using the relative fuel usage of like vehicles operating with and without the specific component or system under evaluation. Accuracy capability employing this test technique is either ±1% or ±2%, depending upon the method of fuel measured. (See paragraph 7.4.)
Standard

Joint Rccc/SAE Fuel Consumption Test Procedure (Short Term In-Service Vehicle) Type I

1986-10-01
HISTORICAL
J1264_198610
This recommended practice provides minimum requirements for testing components or systems of the type which can be switched from one truck to another with relative ease; i.e.; aerodynamic devices, clutch fans, radial tires, and the like. The test utilizes in-service fleet vehicles, operated over representative routes. The relative fuel effectiveness of the component or system under test is determined as a percentage improvement factor. This factor is calculated using the relative fuel usage of like vehicles operating with and without the specific component or system under evaluation. Accuracy capability employing this test technique is either ±1% or ±2%, depending upon the method of fuel measurement. (See paragraph 6.4.)
Standard

Joint RCCC/SAE Fuel Consumption Test Procedure (Short Term In-Service Vehicle) Type 1

1979-04-01
HISTORICAL
J1264_197904
This recommended practice provides minimum requirements for testing components or systems of the type which can be switched from one truck to another with relative ease; i.e.; aerodynamic devices, clutch fans, radial tires, and the like. The test utilizes in-service fleet vehicles, operated over representative routes. The relative fuel effectiveness of the component or system under test is determined as a percentage improvement factor. This factor is calculated using the relative fuel usage of like vehicles operating with and without the specific component or system under evaluation. Accuracy capability employing this test technique is either +/-1% or +/-2%, depending upon the method of fuel measured. (See paragraph 7.4.)
Standard

Test Method for Measuring Power Consumption of Air Conditioning and Brake Compressors for Trucks and Buses

1990-04-01
HISTORICAL
J1340_199004
The testing techniques outlined in this SAE Recommended Practice were developed as part of an overall program for testing and evaluating fuel consumption of heavy duty trucks and buses. The technique outlined in this document provides a general description of the type of equipment and facility which is necessary to determine the power consumption of these engine-driven components. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation. If specific vehicle application is not known, see SAE J1343. The purpose of this document is to provide a recommended test procedure for establishing the power consumption of an air brake compressor or an air conditioning compressor. It is intended that this test procedure be used to determine compressor power consumption over a range of operating conditions, including both the loaded and unloaded modes.
Standard

Test Method for Measuring Power Consumption of Air Conditioning and Brake Compressors for Trucks and Buses

1981-07-01
HISTORICAL
J1340_198107
The testing techniques outlined in this SAE Recommended Practice were developed as part of an overall program for testing and evaluating fuel consumption of heavy duty trucks and buses. The technique outlined in this document provides a general description of the type of equipment and facility which is necessary to determine the power consumption of these engine-driven components. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation. If specific vehicle application is not known, see SAE J1343. The purpose of this document is to provide a recommended test procedure for establishing the power consumption of an air brake compressor or an air conditioning compressor. It is intended that this test procedure be used to determine compressor power consumption over a range of operating conditions, including both the loaded and unloaded modes.
Standard

Test Method for Measuring Power Consumption of Air Conditioning and Brake Compressors for Trucks and Buses

2003-09-04
HISTORICAL
J1340_200309
The testing techniques outlined in this SAE Recommended Practice were developed as part of an overall program for testing and evaluating fuel consumption of heavy duty trucks and buses. The technique outlined in this document provides a general description of the type of equipment and facility which is necessary to determine the power consumption of these engine-driven components. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation. If specific vehicle application is not known, see SAE J1343. The purpose of this document is to provide a recommended test procedure for establishing the power consumption of an air brake compressor or an air conditioning compressor. It is intended that this test procedure be used to determine compressor power consumption over a range of operating conditions, including both the loaded and unloaded modes.
Standard

Test Method for Measuring Power Consumption of Hydraulic Pumps for Trucks and Buses

2003-04-24
HISTORICAL
J1341_200304
The testing technique outlined in this SAE Recommended practice was developed as part of an overall program for testing and evaluating fuel consumption of heavy-duty trucks and buses. The technique outlined in this document provides a general description of the type of equipment and facility which is necessary to determine the power consumption of these engine-driven components. It is recommended that the specific operating condition suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation. This document covers evaluation techniques for determining the power consumption characteristics of hydraulic pumps used on heavy-duty trucks and buses. The purpose of this document is to expand on the scope of the existing SAE J745. All of the specifications and apparatus utilized in that document for construction and industrial machinery can be utilized in this procedure.
Standard

Test Method for Measuring Power Consumption of Hydraulic Pumps for Trucks and Buses

2018-01-08
WIP
J1341
This document covers evaluation techniques for determining the power consumption characteristics of engine driven hydraulic pumps used on heavy-duty trucks and buses. The testing technique outlined in this SAE Recommended Practice was developed as part of an overall program for testing and evaluating fuel consumption of heavy-duty trucks and buses. The technique outlined in this document provides a description of the test to be run to determine power consumption of these engine driven components, the type of equipment and facilities which are generally required to perform these tests are discussed in SAE J745. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation.
Standard

Test Method for Measuring Power Consumption of Air Conditioning and Brake Compressors for Trucks and Buses

2011-09-12
CURRENT
J1340_201109
The testing techniques outlined in this SAE Recommended Practice were developed as part of an overall program tor testing and evaluating fuel consumption of heavy duty trucks and buses. The technique outlined in this document provides a general description of the type of equipment and facility which is necessary to determine the power consumption of these engine-driven components. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation. If specific vehicle application is not known, see SAE J1343.
Standard

Test Method for Measuring Power Consumption of Hydraulic Pumps for Trucks and Buses

1990-04-01
HISTORICAL
J1341_199004
This document covers evaluation techniques for determining the power consumption characteristics of engine driven hydraulic pumps used on heavy-duty trucks and buses. The testing technique outlined in this SAE Recommended Practice was developed as part of an overall program for testing and evaluating fuel consumption of heavy-duty trucks and buses. The technique outlined in this document provides a description of the test to be run to determine power consumption of these engine driven components, the type of equipment and facilities which are generally required to perform these tests are discussed in SAE J745. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation.
Standard

Test Method for Measuring Power Consumption of Hydraulic Pumps for Trucks and Buses

1981-07-01
HISTORICAL
J1341_198107
This document covers evaluation techniques for determining the power consumption characteristics of engine driven hydraulic pumps used on heavy-duty trucks and buses. The testing technique outlined in this SAE Recommended Practice was developed as part of an overall program for testing and evaluating fuel consumption of heavy-duty trucks and buses. The technique outlined in this document provides a description of the test to be run to determine power consumption of these engine driven components, the type of equipment and facilities which are generally required to perform these tests are discussed in SAE J745. It is recommended that the specific operating conditions suggested throughout the test be carefully reviewed on the basis of actual data obtained on the specific vehicle operation.
Standard

Fuel Economy Measurement Test (Engineering Type) for Trucks and Buses

1997-12-01
CURRENT
J1376_199712
This procedure incorporates test cycles that produce relative fuel economy data relating to long haul, short haul, and local driving patterns, or any combination of these and to those components developed to improve fuel economy for these patterns. The tests conducted on a specific vehicle are to reflect that vehicle's general mode of operation. The procedure is intended to be used under controlled, warmed-up conditions on a test tract or on suitable roads. A minimum of two vehicles running simultaneously is required. Test condition recommendations are provided for undertaking this engineering test. If it is necessary to conduct a test outside of these test conditions, the purpose of the test and the variant conditions should be recorded and noted whenever the results are reported.
Standard

Truck and Bus Aerodynamic Device and Concept Terminology

2013-04-09
HISTORICAL
J2971_201304
This SAE J2971 Recommended Practice Truck and Bus Aerodynamic Device Terminology document describes a standard naming convention of aerodynamic devices and technologies used to control aerodynamic forces on truck and buses weighing more than 10,000 pounds (including trailers).
Standard

Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics

2013-09-17
HISTORICAL
J2966_201309
This document outlines general requirements for the use of CFD methods for aerodynamic simulation of medium and heavy commercial ground vehicles weighing more than 10 000lbs. The document provides guidance for aerodynamic simulation with CFD methods to support current vehicle characterization, vehicle development, vehicle concept development and vehicle component development. The guidelines presented in the document are related to Navier-Stokes and Lattice-Boltzmann based solvers. This document is only valid for the classes of CFD methods and applications mentioned. Other classes of methods and applications may or may not be appropriate to simulate the aerodynamics of medium and heavy commercial ground vehicle weighing more than 10 000lbs.
Standard

Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics

2017-04-18
CURRENT
J2966_201704
This document outlines general requirements for the use of CFD methods for aerodynamic simulation of medium and heavy commercial ground vehicles weighing more than 10 000lbs. The document provides guidance for aerodynamic simulation with CFD methods to support current vehicle characterization, vehicle development, vehicle concept development and vehicle component development. The guidelines presented in the document are related to Navier-Stokes and Lattice-Boltzmann based solvers. This document is only valid for the classes of CFD methods and applications mentioned. Other classes of methods and applications may or may not be appropriate to simulate the aerodynamics of medium and heavy commercial ground vehicle weighing more than 10 000lbs.
Standard

Guidelines for Aerodynamic Assessment of Medium and Heavy Commercial Ground Vehicles Using Computational Fluid Dynamics

2019-08-01
WIP
J2966
This document outlines general requirements for the use of CFD methods for aerodynamic simulation of medium and heavy commercial ground vehicles weighing more than 10 000lbs. The document provides guidance for aerodynamic simulation with CFD methods to support current vehicle characterization, vehicle development, vehicle concept development and vehicle component development. The guidelines presented in the document are related to Navier-Stokes and Lattice-Boltzmann based solvers. This document is only valid for the classes of CFD methods and applications mentioned. Other classes of methods and applications may or may not be appropriate to simulate the aerodynamics of medium and heavy commercial ground vehicle weighing more than 10 000lbs.
Standard

SAE Wind Tunnel Test Procedure for Trucks and Buses

2012-07-16
CURRENT
J1252_201207
The scope of this SAE Recommended Practice is sufficiently broad that it encompasses the full range of full-scale medium and heavy duty vehicles represented as either full-scale or reduced-scale wind tunnel models. The document provides guidance for wind tunnel testing to support current vehicle characterization, vehicle development, vehicle concept development, and vehicle component development.
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