Download or read book TEST METHOD FOR MEASURING POWER CONSUMPTION OF FAN DRIVE SYSTEMS FOR TRUCKS AND BUSES written by Cooling Systems Standards Committee and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 recommended practice 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 be carefully reviewed on the basis of actual data obtained on the specific vehicle operation.Because of the variation in size, shape, configuration, and mountings available in cooling fans and fan drive systems, specific test devices have not been included.Using known power/speed relationships for a given fan as developed by SAE J1339, Test Method for Measuring Power Consumption of Cooling Fans for Trucks and Buses, this procedure can be used to calculate the fan power requirements for truck and bus cooling systems using fixed-ratio, speed-modulating, and on-off fan drive control.
Download or read book TEST METHOD FOR MEASURING POWER CONSUMPTION OF COOLING FANS FOR TRUCKS AND BUSES written by Cooling Systems Standards Committee and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 recommended practice 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 and the fan.Because of the variation in size, shape, configuration, and mountings available in cooling fans, specific test devices have not been included.
Download or read book TEST METHOD FOR MEASURING POWER CONSUMPTION OF TRUCK AND BUS ENGINE FANS written by Cooling Systems Standards Committee and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The test procedure is intended for use in testing and evaluating the approximate power consumption of heavy truck and bus engine cooling fans. The procedure also provides a general description of the equipment necessary to measure fan power consumption, so that the parasitic power consumption of a complete vehicle may be predicted.The test conditions in the procedure may not adequately match those of the vehicle for which fuel consumption information is desired. In that case, engineering estimates or extrapolations may be necessary. The procedure neglects the pressure drop caused by the radiator core (unless the actual vehicle is used as a test fixture). The effect of ram air due to vehicle motion is also neglected. Those two effects tend to offset each other. Finally, the effect of a fan clutch in reducing fan use and power consumption is not a part of this procedure.
Download or read book Test Method for Determining Power Consumption of Engine Cooling Fan Drive Systems written by Cooling Systems Standards Committee and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The techniques outlined in this SAE Recommended Practice were developed as part of an overall program for determining and evaluating fuel consumption of heavy-duty trucks and buses, but it is applicable to off highway vehicles as well.It is recommended that the specific operating conditions be carefully reviewed on the basis of actual installation data. Cooling requirements are affected by all heat exchangers that are cooled by the fan drive system. These may include radiators, condensers, charge air coolers, oil coolers, and others.Because of the variation in size, shape, configuration, and mountings available in cooling fans and fan drive systems, specific test devices have not been included.Using known power/speed relationships for a given fan, this procedure can be used to calculate the fan drive system's power consumption for engine cooling systems using fixed ratio, viscous or speed modulating, and mechanical on/off fan drives including electronically activated fan drives. This power consumption may then be used in determining engine net power per SAE J1349. For fan power/speed relationships, refer to SAE J1339. This document has been revised to show an additional method for determining power consumption of engine driven fan drive systems by looking at an alternative method for measuring in vehicle fan power.
Download or read book DOT SAE Truck and Bus Fuel Economy Measurement Study Report written by Society of Automotive Engineers and published by . This book was released on 1976 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TEST METHOD FOR MEASURING POWER CONSUMPTION OF ENGINE COOLING FANS written by Cooling Systems Standards Committee and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice is intended for use in testing and evaluating the approximate power consumption of engine cooling fans. This power consumption would then be used to estimate net engine power per SAE J1349. The procedure also provides a general description of equipment necessary to measure the approximate fan power consumption in a vehicle installation.The test conditions in the procedure generally will not match those of the installation for which fuel consumption information is desired. The power required by a given fan depends on the geometric details of the installation, including the shroud and its clearance. These details should be duplicated in the test setup if accurate power measurement is expected. Required power at a given air density and speed also depend on the volumetric flow rate, or else the pressure rise across the fan, since these two parameters are mutually dependent. These parameters depend on the pressure drop across the radiator core and the ram pressure due to vehicle motion. Core drop and ram pressure tend to offset each other, but can be expected to cancel one another at only one vehicle speed at most. Tests run in the absence of the radiator core will not impose the proper pressure-rise requirement on the fan. Tests run with the radiator core in place will impose a greater pressure-rise requirement on the fan than it will likely experience at high vehicle speeds, when part of the rise will be provided by ram air. For these reasons, the test procedure should be recognized as providing only an approximate measure of installed fan power.Although the test procedure is based on running the fan with a motoring dynamometer, the actual installation can be used as a test fixture if an accurate torque meter is available. In this case, the same qualifications discussed apply. Finally, for the effect of a fan clutch in reducing fan use and power consumption, which is not a part of this procedure, refer to SAE J1342.
Download or read book Test Method for Determining Power Consumption of Cooling Fan Drive Systems written by Cooling Systems Standards Committee and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The techniques outlined in this SAE Recommended Practice were developed as part of an overall program for determining and evaluating fuel consumption of heavy-duty trucks and buses, but it is applicable to off highway vehicles as well.It is recommended that the specific operating conditions be carefully reviewed on the basis of actual installation data. Cooling requirements are affected by all heat exchangers that are cooled by the fan drive system. These may include radiators, condensers, charge air coolers, oil coolers, and others.Because of the variation in size, shape, configuration, and mountings available in cooling fans and fan drive systems, specific test devices have not been included.Using known power/speed relationships for a given fan, this procedure can be used to calculate the fan drive system's power consumption for cooling systems using the types of drives listed below. This power consumption may then be used in determining engine net power per SAE J1349. For more fan power/speed relationships, refer to SAE J1339. Five-Year Review. This document has been reviewed and revised for increased clarity.
Download or read book S A E Handbook written by and published by . This book was released on 1991 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Test Method for Measuring Performance of Engine Cooling Fans written by Cooling Systems Standards Committee and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice is intended for use in testing and evaluating the approximate performance of engine-driven cooling fans. This performance would include flow, pressure, and power. This flow and pressure information is used to estimate the engine cooling performance. This power consumption is used to estimate net engine power per SAE J1349. The procedure also provides a general description of equipment necessary to measure the approximate fan performance.The test conditions in the procedure generally will not match those of the installation for which cooling and fuel consumption information is desired. The performance of a given fan depends on the geometric details of the installation, including the shroud and its clearance. These details should be duplicated in the test setup if accurate performance measurement is expected. The performance at a given air density and speed also depends on the volumetric flow rate, or the pressure rise across the fan, since these two parameters are mutually dependent. These parameters depend on the pressure drop across the radiator core and the ram pressure due to vehicle motion. For these reasons, the test procedure should be recognized as providing only an approximate measure of installed fan performance.Although the test procedure is based on running the fan with a motoring dynamometer, the actual installation can be used as a test fixture if an accurate torque meter is available. In this case, the same qualifications discussed apply.For the effect of a fan clutch in reducing fan use and power consumption, which is not a part of this procedure, refer to SAE J1342.Performance testing of electric cooling fan assemblies is covered in SAE J2867. This document has been updated to improve readabilty and clarity, and Figure 1 moved to its appropriate section.
Download or read book Third Automotive Fuel Economy Research Contractors Coordination Meeting December 1 2 1980 written by and published by . This book was released on 1981 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TEST METHOD FOR MEASURING POWER CONSUMPTION OF AIR CONDITIONING AND AIR BRAKE COMPRESSORS FOR TRUCKS AND BUSES written by Truck and Bus Aerodynamics and Fuel Economy Committee and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 recommended practice 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, "Information Relating to Duty Cycles and Average Power Requirements of Truck and Bus Engine Accessories," Section 3, Air Brake Compressors and Section 5, Air Conditioning Compressor.
Download or read book Test Method for Determining Power Consumptionof Engine Cooling Fan Drive Systems written by Cooling Systems Standards Committee and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technique outlined in this SAE Recommended Practice was developed as part of an overall program for determining and evaluating fuel consumption of heavy-duty trucks and buses. It is recommended that the specific operating conditions be carefully reviewed on the basis of actual installation data. Cooling requirements are affected by all heat exchangers that are cooled by the fan-drive system. These may include radiators, condensers, charge air coolers, or oil coolers. Because of the variation in size, shape, configuration, and mountings available in cooling fans and fan-drive systems, specific test devices have not been included. Using know power/speed relationships for a given fan, this procedure can be used to calculate the fan-drive system's power consumption for engine cooling systems using fixed-ratio, speed modulating, and on/off fan drives. This power consumption may then be used in determining engine net power per SAE J1349. For fan power/speed relationships, refer to SAE J1339.
Download or read book Test Method for Measuring Power Consumption of Air Conditioning and Brake Compressors for Trucks and Buses written by Truck and Bus Aerodynamics and Fuel Economy Committee and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. The resulting data is intended for use in the measure of probable vehicle fuel consumption under operating conditions.
Download or read book The DOT SAE Truck and Bus Fuel Economy Measurement Conference written by and published by . This book was released on 1975 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Test Method for Measuring Power Consumption of Air Conditioning and Brake Compressors for Trucks and Buses written by Truck and Bus Engine Committee and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. The resulting data is intended for use in the measure of probable vehicle fuel consumption under operating conditions.
Download or read book METHOD FOR DETERMINING POWER CONSUMPTION OF ENGINE COOLING FAN DRIVE SYSTEMS written by Cooling Systems Standards Committee and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The technique outlined in this SAE Recommended Practice was developed as part of an overall program for determining and evaluating fuel consumption of heavy-duty trucks and buses.It is recommended that the specific operating conditions be carefully reviewed on the basis of actual installation data. Cooling requirements are affected by all heat exchangers that are cooled by the fan-drive system. These may include radiators, condensers, charge air coolers, or oil coolers.Because of the variation in size, shape, configuration, and mountings available in cooling fans and fan-drive systems, specific test devices have not been included.Using known power/speed relationships for a given fan, this procedure can be used to calculate the fan-drive system's power consumption for engine cooling systems using fixed-ratio, speed modulating, and on-off fan drives. This power consumption may then be used in determining engine net power per SAE J1349. For fan power/speed relationships, refer to SAE J1339.
Download or read book Catalog of American National Standards written by American National Standards Institute and published by . This book was released on 1995 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
