If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed ignition may be delayed because the （）.

If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.

A.cylinder compression pressure may not be high enough

B.cylinder compression temperature may be too high

C.fuel oil injection pressure may not be high enough

D.scavenge and purge process is incomplete

答案解析

A