A、improving cylinder scavenging
B、preheating the combustion chamber
C、reducing air charge density
D、preventing valve wear
更多“Turbocharged four-stroke/cycle diesel engines utilize valve overlap for（）.”相关的问题
A、a single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine B、a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine C、two medium-speed, turbocharged, four-stroke diesel engines D、a variable-speed AC generator
A、most critical in a four-stroke cycle diesel engine B、most critical in a two-stroke/cycle diesel engine C、most critical in a four-stroke/cycle diesel engine if it is turbocharged D、of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine
A、temperature of the exhaust gases B、energy supplied to the turbocharger C、air pressure to the intake manifold D、purge of exhausted gases from the cylinders
A、during the valve overlap period B、with only the exhaust valve open C、at a pressure below atmospheric D、without cooling the cylinders or pistons
A、during the valve overlap period B、with only the exhaust valve open C、at a pressure below atmospheric D、without cooling the cylinders or pistons
A、A.inoperative turbocharger B、B.inadequate fuel supply C、C.overload on one cylinder D、D.unequal load distribution
A、improper venting of the cooling system B、carrying the expansion tank water level too high C、a totally clogged impeller in the cooling water pump D、an incorrectly set cooling system temperature control
A、A.reduce load B、B.check your exhaust C、C.adjust cooling water temperature D、D.increase lube oil flow
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