A diesel engine piston crown can crack from ()
A、excessive piston to liner clearance
B、excessive dirt beneath the piston crown that reduces heat transfer
C、faulty nozzle spray
D、all of the above
A、excessive piston to liner clearance
B、excessive dirt beneath the piston crown that reduces heat transfer
C、faulty nozzle spray
D、all of the above
A、Diesel engines have more advantages in comparison with gasoline engines B、Diesel engines have more advantages in comparison to gasoline engines C、Gasoline engines have more advantages in comparison with diesel engines D、Gasoline engines have more advantages in comparison to diesel engines
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、bearing pressure in a four-stroke\cycle acting single diesel engine is continually reversed B、bearing pressure in a two-stroke\cycle single acting diesel engine is continually reversed C、the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine D、two-stoke/cycle diesel engines require more complicated lubrication piping
A、inboard diesel engine B、outboard diesel engine C、outboard gasoline engine D、inboard gasoline engine
A、Slow speed diesel engines B、Medium-speed diesel engines C、Steam engines D、Gasoline engines
A、ignition lag B、engine horsepower C、lube oil system pressure D、specific fuel consumption
A、one half crankshaft speed in a two-stroke cycle diesel engine B、crankshaft speed in a two-stroke cycle diesel engine C、two times crankshaft speed in a two-stroke cycle diesel engine D、one-fourth times crankshaft speed in a four-stroke cycle diesel engine
A、A.Diesel engine propulsion B、B.Diesel electric propulsion C、C.Steam engine propulsion D、D.Gas turbine propulsion
A、has little or no internal friction B、has a lower effective compression ratio C、operates with scavenge air under a positive pressure D、operates without energy absorbing intake and exhaust strokes