A.排盡廢氣多進(jìn)新氣 B.減少排氣沖程耗功 C.減少新氣廢氣摻混 D.增加渦輪廢氣能量
A.進(jìn)氣閥提前開啟角太大 B.進(jìn)氣閥提前開啟角太小 C.排氣閥提前開啟角太大 D.排氣閥提前開啟角太小
A.氣口、氣閥均對(duì)稱于下止點(diǎn)分布 B.氣口對(duì)稱下止點(diǎn),氣閥不對(duì)稱下止點(diǎn) C.氣閥對(duì)稱下止點(diǎn),氣口不對(duì)稱下止點(diǎn) D.氣口、氣閥均不對(duì)稱于下止點(diǎn)