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Standard

ENGINE RETARDER DYNAMOMETER TEST AND CAPABILITY RATING PROCEDURE

1994-08-01
HISTORICAL
J1621_199408
This SAE Recommended Practice has been adopted by SAE to specify: a A basis for net engine retarder power rating b Reference inlet air test conditions c A method for correcting observed engine retarder power to reference conditions d A method for determining net engine retarder power with a dynamometer
Standard

Engine Retarder Dynamometer Test and Capability Rating Procedure

2012-07-02
CURRENT
J1621_201207
This SAE Recommended Practice has been adopted by SAE to specify: a A basis for net engine retarder power rating b Reference inlet air test conditions c A method for correcting observed engine retarder power to reference conditions d A method for determining net engine retarder power with a dynamometer
Standard

Engine Retarder Dynamometer Test and Capability Rating Procedure

2005-12-12
HISTORICAL
J1621_200512
This SAE Recommended Practice has been adopted by SAE to specify: a A basis for net engine retarder power rating b Reference inlet air test conditions c A method for correcting observed engine retarder power to reference conditions d A method for determining net engine retarder power with a dynamometer
Standard

Exhaust Brake Dynamometer Test and Capability Rating Procedure

2012-07-02
CURRENT
J2458_201207
This SAE Recommended Practice has been adopted by SAE to specify: a A basis for net engine retarder power rating b Reference inlet air test conditions c A method for correcting observed engine retarder power to reference conditions d A method for determining net engine retarder power with a dynamometer
Standard

Exhaust Brake Dynamometer Test and Capability Rating Procedure

1998-07-01
HISTORICAL
J2458_199807
This SAE Recommended Practice has been adopted by SAE to specify: a A basis for net engine retarder power rating b Reference inlet air test conditions c A method for correcting observed engine retarder power to reference conditions d A method for determining net engine retarder power with a dynamometer
Standard

Information Relating to Duty Cycles and Average Power Requirements of Truck and Bus Engine Accessories

2000-08-31
CURRENT
J1343_200008
This report is intended to provide the information to estimate the accessory load of a typical heavy truck or bus. The components covered include: air compressors, alternators, refrigerant compressors, engine cooling fans and power steering pumps. The values show an estimate of the average power requirements and duty cycles for these accessories. This report does not address loads required for engine operation. Required systems include those needed for engine performance such as fuel pumps and electronic control modules (ECM).
Standard

Liquefied Natural Gas (LNG) Vehicle Fuel

2018-02-12
CURRENT
J2699_201802
This SAE Information Report applies to liquefied natural gas used as vehicle fuel and requires LNG producers to provide the required information on the fuel composition and its “dispense by” date.
Standard

Liquefied Natural Gas (LNG) Vehicle Fuel

2011-07-08
HISTORICAL
J2699_201107
This SAE Information Report applies to liquefied natural gas used as vehicle fuel and requires LNG producers to provide the required information on the fuel composition and its “dispense by” date.
Standard

Recommended Practice for Measuring Fuel Economy and Emissions of Hybrid-Electric and Conventional Heavy-Duty Vehicles

2018-07-23
HISTORICAL
J2711_201807
This SAE Recommended Practice was established to provide an accurate, uniform and reproducible procedure for simulating use of heavy-duty hybrid-electric vehicles (HEVs) and conventional vehicles on dynamometers for the purpose of measuring emissions and fuel economy. Although the recommended practice can be applied using any driving cycle, the practice recommends three cycles: the Manhattan cycle, representing low-speed transit bus operation; the Orange County Transit Cycle, representing intermediate-speed bus operation; and the Urban Dynamometer Driving Schedule (UDDS) cycle representing high-speed operation for buses and tractor-trailers. This document does not specify which emissions constituents to measure (e.g., HC, CO, NOx, PM, CO2), as that decision will depend on the objectives of the tester.
Standard

Recommended Practice for Measuring Fuel Economy and Emissions of Hybrid-Electric and Conventional Heavy-Duty Vehicles

2002-09-20
HISTORICAL
J2711_200209
This SAE Recommended Practice was established to provide an accurate, uniform and reproducible procedure for simulating use of heavy-duty hybrid-electric vehicles (HEVs) and conventional vehicles on dynamometers for the purpose of measuring emissions and fuel economy. Although the recommended practice can be applied using any driving cycle, the practice recommends three cycles: the Manhattan cycle, representing low-speed transit bus operation; the Orange County Transit Cycle, representing intermediate-speed bus operation; and the Urban Dynamometer Driving Schedule (UDDS) cycle representing high-speed operation for buses and tractor-trailers. This document does not specify which emissions constituents to measure (e.g., HC, CO, NOx, PM, CO2), as that decision will depend on the objectives of the tester.
Standard

SNAP-ACCELERATION SMOKE TEST PROCEDURE FOR HEAVY-DUTY DIESEL POWERED VEHICLES

1996-02-01
HISTORICAL
J1667_199602
This SAE Recommended Practice applies to vehicle exhaust smoke measurements made using the Snap-Acceleration test procedure. Because this is a non-moving vehicle test, this test can be conducted along the roadside, in a truck depot, a vehicle repair facility, or other test facilities. The test is intended to be used on heavy-duty trucks and buses powered by diesel engines. It is designed to be used in conjunction with smokemeters using the light extinction principle of smoke measurement. This procedure describes how the snap-acceleration test is to be performed. It also gives specifications for the smokemeter and other test instrumentation and describes the algorithm for the measurement and quantification of the exhaust smoke produced during the test. Included are discussions of factors which influence snap-acceleration test results and methods to correct for these conditions.
Standard

Snap-Acceleration Smoke Test Procedure for Heavy-Duty Diesel Powered Vehicles

2018-02-15
CURRENT
J1667_201802
This SAE Recommended Practice applies to vehicle exhaust smoke measurements made using the Snap-Acceleration test procedure. Because this is a non-moving vehicle test, this test can be conducted along the roadside, in a truck depot, a vehicle repair facility, or other test facilities. The test is intended to be used on heavy-duty trucks and buses powered by diesel engines. It is designed to be used in conjunction with smokemeters using the light extinction principle of smoke measurement. This procedure describes how the snap-acceleration test is to be performed. It also gives specifications for the smokemeter and other test instrumentation and describes the algorithm for the measurement and quantification of the exhaust smoke produced during the test. Included are discussions of factors which influence snap-acceleration test results and methods to correct for these conditions.
Standard

Vehicle Idle Gear Rattle Evaluation Procedure

2017-09-19
CURRENT
J2555_201709
This SAE Standard describes a procedure to be used to evaluate a disturbance known as “idle gear rattle” which can exist in vehicles equipped with manual transmissions and clutches. Other types of noises associated with operation at idle are also briefly described.
Standard

Vehicle Idle Gear Rattle Evaluation Procedure

2000-11-01
HISTORICAL
J2555_200011
This SAE Standard describes a procedure to be used to evaluate a disturbance known as “idle gear rattle” which can exist in vehicles equipped with manual transmissions and clutches. Other types of noises associated with operation at idle are also briefly described.
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