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Recommended Practice for an Engineering Analysis for A/C Efficiency Credits
Under U.S. GHG and CAFE regulations, manufacturers are required to perform confirmatory testing to validate indirect air conditioning credits (refer to 40 CFR 86.1868-12). The purpose of this SAE Recommended Practice is to provide manufacturers with updated criteria for the 2020 and later model years. This SAE Recommended Practice is also suitable for reporting credit using an Engineering Analysis to the California Air Resources Board (CARB).
This SAE Recommended Practice describes the work done by the IMAC GHG CRP to:
to demonstrate the performance of A/C technologies from the pre-approved credit menu meeting regulatory requirements.
Also, enclosed in this SAE Recommended Practice are instructions that can be used by vehicle manufacturers in establishing an engineering analysis in lieu of performing the AC17 test on a vehicle which does not incorporate the credit-generating technologies.
These procedures for performing an engineering analysis should be sufficient to satisfy the requirements of the regulation to earn credits for indirect A/C technologies from the pre-approved credit menu.
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