On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from ().
A、a spindle lubricator
B、an oil jet
C、internal splashing
D、drilled passages in the crankshaft
A、a spindle lubricator
B、an oil jet
C、internal splashing
D、drilled passages in the crankshaft
A、Slow speed diesel engines B、Medium-speed diesel engines C、Steam engines D、Gasoline engines
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、A.slow-speed diesel B、B.medium-speed diesel C、C.high-speed diesel D、D.constant-speed diesel
A、To reduce the main engine speed B、To increase the main engine speed C、To govern the main engine speed D、To fix the propeller shaft
A、Engine is hard to start B、Engine misses C、Surges at governed RPM D、Coolant temperature is too low
A、The medium speed 4-stroke trunk piston engine B、The low speed 2-stroke crosshead engine C、The medium speed 2-stroke crosshead engine D、The low speed 4-stroke trunk piston engine
A、they operate between 150 and 450 rpm B、they are connected to the propeller by gearing C、their smaller size and weight D、they can be connected directly to the propeller without gearing