Wrong on 5

premium grade is high in Octane number (R+M), which will tollerate higher compression ratio. It has nothing to do with NOx generation, as the NOx is depending on temperature. Moreover, the EGR system is recirculating some emmission gas to the combustion chamber, and such mix will bring the temperature down during combustion, and therefore reduces NOx. So, the gas grade has nothing to do with NOx, but the EGR system does.

所有跟帖： 

• 這樣說你就明白了,第五條是對的.高溫產生氮氧化物,爆振燃燒必引起高溫,低標號汽油易造成爆振燃燒, -fixanycars- ♀ (181 bytes) () 03/13/2010 postreply 13:59:35

• 解釋更離譜 -biglow- ♂ (441 bytes) () 03/13/2010 postreply 14:29:40

• 爆燃引起的燒壞氣閥和燒穿活塞頂的情況太普遍了.爆燃溫度高於2,300F -fixanycars- ♀ (111 bytes) () 03/13/2010 postreply 19:46:37

• 離題了 -biglow- ♂ (190 bytes) () 03/13/2010 postreply 20:26:54