题目
Turbocharged four-stroke/cycle diesel engines utilize valve overlap for_____. ()A. improving cylinder scavengingB. reducing air charge densityC. preheating the combustion chamberD. preventing valve wear
Turbocharged four-stroke/cycle diesel engines utilize valve overlap for_____. ()
A. improving cylinder scavenging
B. reducing air charge density
C. preheating the combustion chamber
D. preventing valve wear
题目解答
答案
A. improving cylinder scavenging