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Procedure for Measuring System COP [Coefficient of Performance] of a Mobile Air Conditioning System on a Test Bench

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2765_201707
  • Current
Published 2017-07-10 by SAE International in United States
The impact of mobile air conditioning systems on the environment is becoming more important. Fuel used to power the system impacts both fuel economy of the vehicle and tail pipe emissions of carbon dioxide.
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PWM HVAC Blower Controller and BLDC Motor Controller Efficiency Assessment

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J3109_201707
  • Current
Published 2017-07-10 by SAE International in United States
The intention of this standard is to establish a framework to measure the efficiency of PWM HVAC Blower Controllers and Brushless DC Motor Controllers and define a usage based overall efficiency. This result can then be used by vehicle OEMs to demonstrate compliance towards requirements or benchmarks established by regulatory agencies.
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A/C Compressor Oil Separator Effectiveness Test Standard

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J3112_201703
  • Current
Published 2017-03-07 by SAE International in United States
This SAE Standard establishes the test conditions and reporting method for quantifying refrigerant circuit oil circulation rate (OCR) reduction effectiveness of mobile air conditioning compressors using R-134a and R-1234yf refrigerants that include oil separators and/or other design features for the purpose of reducing the OCR in the refrigerant circuit.
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Coupled Automotive Refrigerant Air-Conditioning Hose Assemblies

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2064_201508
  • Current
Published 2015-08-28 by SAE International in United States
The Scope of SAE J2064 covers coupled hose assemblies intended for containing and circulating lubricant, liquid and gaseous R134a and/or R-1234yf refrigerant in automotive air-conditioning systems. Historically, requirements for the hose used in coupled automotive refrigerant air conditioning assemblies was included in SAE J2064. SAE J2064 has been changed to establish the requirements for factory and field coupled hose assemblies. SAE J3062 has been issued to define requirements for the hose used in these assemblies into its own standard. SAE J2064 also provides the necessary values used in SAE J2727 Mobile Air Conditioning System Refrigerant Emission charts for R-134a and R-1234yf. The certified coupling of MAC hose assemblies is required in meeting certain regulatory requirements. A hose which has met the requirements of SAE J3062 and certified in J2911 must be used as part of the coupled assembly. A hose which meets the requirements of SAE J3062 does not insure the assembly will meet the requirements of SAE J2064. It is the hose assembly manufacturer’s responsibility to confirm that the assemblies meet the specified acceptance…
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Automotive Refrigerant Air-Conditioning Hose Requirements

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J3062_201506
  • Current
Published 2015-06-30 by SAE International in United States
The Scope of SAE J3062 covers hose intended for containing and circulating lubricant, liquid and gaseous R134a and/or R-1234yf refrigerant in automotive air-conditioning systems. The hose shall be designed to minimize permeation of the refrigerant, contamination of the system, and to be functional over a temperature range of -30 to 125 °C. Specific construction details are to be agreed upon between the user and supplier. Requirements for the hose used in coupled automotive refrigerant air-conditioning assemblies had been included in SAE J2064. SAE J3062 separates requirements for the hose used in these assemblies into its own standard. SAE J2064 also provides the necessary values used in SAE J2727 Mobile Air-Conditioning System Refrigerant Emission charts for R-134a and R-1234yf. Mobile air-conditioning system refrigerant emissions rates are established in SAE J2727 Emission charts and are important. The certified coupling of MAC hose assemblies is required in meeting certain regulatory requirements. Therefore, the Scope of SAE J2064 has been changed to establish the assembly requirements for factory and field coupled hose assemblies. A hose which meets the requirements…
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R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2842_201505
  • Current
Published 2015-05-07 by SAE International in United States
The intent of this standard is to establish a framework to assure that all evaporators for R-744, R-1234yf, and R-445A mobile air conditioning (MAC) systems meet appropriate testing and labeling requirements. SAE J639 requires vehicle manufacturers to perform assessments to minimize reasonable risks in production MAC systems. The evaporator (as designed and manufactured) shall be part of that risk assessment and it is the responsibility of the vehicle manufacturer to assure all relevant aspects of the evaporator are included. It is the responsibility of all vehicle or evaporator manufacturers to comply with the standards of this document at a minimum. (Substitution of specific test procedures by vehicle manufactures that correlate well to field return data is acceptable.) As appropriate, this standard can be used as a guide to support risk assessments. With regard to certification, most vehicle manufacturers have established formal production part approval processes (PPAP) where compliance certification is established and formally documented. For an evaporator manufacturer of non-original equipment parts (or a vehicle manufacturer that does not have a formal part compliance certification…
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Test Procedure for Determining Refrigerant Emissions from Mobile Air Conditioning Systems

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2763_201502
  • Current
Published 2015-02-20 by SAE International in United States
This SAE Standard covers the Mini-Shed testing methodology to measure the rate of refrigerant loss from an automotive air conditioning (A/C) system. This SAE procedure encompasses both front and rear air conditioning systems utilizing refrigerants operating under sub-critical conditions.

R134a Refrigerant Automotive Air-Conditioned Hose

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2064_201102
  • Historical
Published 2011-02-04 by SAE International in United States
This SAE Standard covers hose and hose assemblies intended for conducting liquid and gaseous R134a and/or R-1234yf refrigerant in automotive air-conditioning systems. The hose shall be designed to minimize permeation of the refrigerant, contamination of the system, and to be functional over a temperature range of −30 to 125 °C. Specific construction details are to be agreed upon between user and supplier. A hose marked “J2064 - R134a”, “J2064 - R-1234yf” or “J2064 - R134a/R-1234yf” signifies that it has been coupled, tested, and has met the requirements of SAE J2064 for the marked refrigerant(s). A hose marked “J2064” without any reference to refrigerant signifies that it has been coupled, tested, and has met the requirements of SAE J2064 for R134a only. It is the hose assembly manufacturer’s responsibility to see that the assemblies meet the specified acceptance criteria for this specification.
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R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2842_201102
  • Historical
Published 2011-02-04 by SAE International in United States
The intent of this standard is to establish a framework to assure that all evaporators for R-744 and R-1234yf mobile air conditioning (MAC) systems meet appropriate testing and labeling requirements. SAE J639 requires vehicle manufacturers to perform assessments to minimize reasonable risks in production MAC systems. The evaporator (as designed and manufactured) shall be part of that risk assessment and it is the responsibility of the vehicle manufacturer to assure all relevant aspects of the evaporator are included. It is the responsibility of all vehicle or evaporator manufacturers to comply with the standards of this document at a minimum. (Substitution of specific test procedures by vehicle manufactures that correlate well to field return data is acceptable.) As appropriate, this standard can be used as a guide to support risk assessments. With regard to certification, most vehicle manufacturers have established formal production part approval processes (PPAP) where compliance certification is established and formally documented. For an evaporator manufacturer of non-original equipment parts (or a vehicle manufacturer that does not have a formal part compliance certification process)…
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Procedure for Measuring System COP [Coefficient of Performance] of a Mobile Air Conditioning System on a Test Bench

Interior Climate Control MAC Supplier Committee
  • Ground Vehicle Standard
  • J2765_200810
  • Historical
Published 2008-10-16 by SAE International in United States
This Standard applies to motor driven mobile air conditioning systems consisting of one in-car air coil (evaporator), a compressor, an expansion device, and one under-hood air coil (condenser).
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