This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
HFC-134a Mobile Air Conditioning System Refrigerant Emission Chart
- Ground Vehicle Standard
- J2727_200808
- Revised
Sector:
Issuing Committee:
Language:
English
Scope
The original SAE J2727 “Emission Chart” provided a rating system for comparing mobile A/C systems and was not intended to define mobile A/C system refrigerant emission. It had been developed from industry experience of expected system refrigerant emission based upon currently available technologies.
The “System Emissions Chart” contained in this revision is intended to serve as a means of estimating the annual refrigerant emissions rate (grams per year) from new production A/C systems equipped with specified component technologies. It provides emission values for various component technologies that are currently available, and can be expanded as new technologies are commercialized. This document provides the information to develop an Excel file template “System Emissions Chart” for system emission analysis. The chart includes automotive compressor technologies for conventional mobile air conditioning systems as well as those using semi-hermetic compressors. This standard can be considered a companion document to SAE J2763 Test Procedure for Determining Refrigerant Emissions from Mobile Air Conditioning Systems. SAE J2727 estimates system emissions, taking into account production assembly variation. SAE J2763 may be used to quantify emissions from properly assembled systems.
Rationale
Industry standards did not exist for measuring, or estimating, refrigerant emissions from mobile air conditioning systems when the original version of SAE J2727 was created in 2005. The 2005 version provided a method of rating emissions from A/C systems, based solely on component technologies used in the system, combined with expert input regarding relative emission rates of components. The 2007 revision was based on the 2005 version, enhanced with laboratory measurements and vehicle field test correlations, and replaced the rating system with an estimate of system emissions in grams per year. The current revision is intended to provide clearer definitions of sealing technologies and how to apply them to the SAE J2727 System Emissions Chart.
Recommended Content
Topic
Data Sets - Support Documents
No Datasets Available
Issuing Committee
Interior Climate Control Fluids Committee
The Interior Climate Control Fluids Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports that serve as guidelines for technicians who service mobile air conditioning systems and operate refrigerant recycling equipment as it applies to automobiles, light trucks and other vehicles with similar R12 systems. Participants in the SAE Interior Climate Control Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.
Reference
| Number | Title |
|---|---|
| J2064_201508 | Coupled Automotive Refrigerant Air-Conditioning Hose Assemblies |
* Redlines comparisons are available for those standards
listed in the Revision History that contain a radio button. A
redline comparison of the current version against a revision is
accomplished by selecting the radio button next to the standard and
then selecting 'compare'. At this time, Redline versions only exist
for some AMS standards. SAE will continue to add redline versioning
with ongoing updates to SAE MOBILUS.