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 shall meet appropriate testing and labeling requirements. SAE J639 requires an assement to be performed to minimize reasonable risks in 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), then the certification described in this standard is the requirement to which those evaporators shall comply. In this case, the evaporator manufacturer or an independent institution shall complete the evaporator certification according to SAE J2911. An example of the latter would be the completion of witness testing by the evaporator manufacturer with the submission of certification documents by the witness organization.
Refrigerant R-152a was excluded from this standard because a secondary loop refrigerant system is required. This standard also does not apply to R-134a refrigerant evaporators because it is proven in use.
Rationale
This standard provides a testing and certification framework for an evaporator used in the passenger compartment of vehicles, as part of a MAC system. It is being updated to improve clarity on corrosion test procedure, update based on refrigerant status, and address manufacturer feedback on leak test. It is intended to appropriately minimize potential risks to persons, during normal use or service of a MAC system using R744 or R-1234yf refrigerants.
The Interior Climate Control MAC Supplier 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.
* 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.
View/Annotate
Content Loading, Please Wait
Document Preview
Content Loading, Please Wait
Document Comparison
Content Loading, Please Wait
Download
A list of downloadable items.
Product Code
Document Title
File Type
Download
J2842_201906
R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements
Export Metadata
This modal will allow the user to download citation information or export specific fields of data into one of three file formats: Excel, comma-separated values, or text.
You are currently not logged into your Dashboard account, which is required for annotating.
Please select Login to login or register for the Dashboard. Select Continue to view the content without the ability to annotate.
Redline Warning
You are currently not logged into your Dashboard account, which is required for annotating.
Please select Login to login or register for the Dashboard. Select Continue to view the content without the ability to annotate.
Data Set Warning
R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements
SAE Journal Subscriptions are available in a variety of options, which include electronic, electronic with back file, and archive. For detailed information and options, please complete the following:
Content Request
Check My Access!
You may already have access to the Ground Vehicle Standard, R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements
Subscription Access
If you have Subscription Access with a username and password, please login below.
Institutional Login
If you have Institutional Access to SAE MOBILUS, using a predetermined organizational login utilizing single-sign-on (Shibboleth), please login below. To request institutional access to SAE MOBILUS, please complete the institutional subscription information form.
Purchase
If you do not have access to SAE MOBILUS via username/password or institutional access, you can still purchase the Ground Vehicle Standard, R-1234yf and R744 Design Criteria and Certification for OEM Mobile Air Conditioning Evaporator and Service Replacements.
Search Tips: Search Operators:AND, OR, NOT; Wild Cards; Using Quotes
SAE MOBILUS® Search Tips
Please note: All terms not contained within quotes, will be evaluated using the OR operator. This means that your search results will contain all results that contain ANY of the entered terms.
AND, OR, NOT
SAE MOBILUS supports the use of the AND, OR and NOT BOOLEAN operators ONLY function with the Advanced Search.
Wild Cards
Using the asterisk, ( * ) allows you to search for a partial word. For example, entering a keyword search of aero* will search for any word beginning with aero.
Using the question mark, ( ? ) allows you to search for a word with a single character wildcard. For example, searching for t?re would match both tire and tyre
Using Quotes
Words in double quotes " " are treated as a phrase. Conducting a search for "heat model" will return all results in which the exact phrase "heat model" is found, while "heat modeling" would NOT be included.
A term combined with a phrase will be joined with an OR operator.
Searching for Standards
When searching for a standard please use the entire Document Number assigned, which includes the abbreviation. A space can be used, or omitted between the abbreviation and number.