SAE International Cooperative Research Project Offers Update on R-1234yf Refrigerant


sae

WARRENDALE, PA--Dec. 14, 2012: The SAE International Cooperative Research Project (CRP1234-4) team was recently established to perform an updated engineering review of R-1234yf refrigerant usage in vehicles. The group has been regularly meeting to review and share test information completed since the close of the original CRP1234-3 in 2009.  The previous study concluded that R-1234yf is a safe and acceptable alternative refrigerant for mobile air conditioning systems that can be used to meet new environmental and consumer needs.

The new CRP team began by conducting a detailed review of the original Fault Tree Analysis (FTA) and chose to expand the trees to ensure that newly-identified information and testing from each of the OEMs is incorporated. This study has highlighted concerns with relying on one test to be reflective of real world collisions across vehicle applications.

To date, the majority of the OEMs involved in the new CRP do not believe that any of the new information reviewed will lead to a change in the overall risk assessment. Several OEMs have shared test results regarding their vehicles.  With the exception of Daimler, no OEM in the CRP has provided information that would suggest a concern for the safe use of R-1234yf in their vehicles.

R-1234yf is approved as an alternative refrigerant by the U.S. EPA and is REACH registered in Europe. Many new vehicles in Europe have received "type approval" to use this refrigerant. It is already in use in vehicles in North America and Europe.

The CRP team continues to hold regular conference calls and face-to-face meetings and expects to be able to provide updated progress reports as new information becomes available. The next report is expected by the middle of February.  To insure thoroughness, the OEM team is working quickly but diligently to complete the expanded fault trees and several of the OEM members continue to do testing toward that goal. The new risk assessment and publication of the findings is planned for completion in the second quarter of 2013.

The team includes 13 members:  Audi, BMW, Chrysler/Fiat, Daimler, Ford, General Motors, Honda, Hyundai, Jaguar Land Rover, Mazda, PSA, Renault and Toyota.

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