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欧米の排ガス規制強化でNAエンジンはそろそろ死ぬんじゃないかな

リッチバーン禁止されたらパワーガタ落ちだよ
排ガスの温度下げられるターボなら比較的マシだけど

24.2.2023
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:52023XC0224(01)

4.4 Non-acceptable Auxiliary Emission Strategies (AES)

Gasoline fuel enrichment
Fuel enrichment which may be used for overheating protection at high engine speed. This results in increased CO emissions under dynamic driving conditions.