The four-stroke engine is used for （） and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 rev/min.
举一反三
- What are the main restrictions on the maneuverability of the direct drive propulsion system when it is moving at a low speed?_____ A: Minimum stable speed of main engine B: Reduction gearbox speed C: Clutch performance D: Propeller size
- In the four-stroke engine, it takes( )to make one<br/>power stroke() A: one propulsion B: two propulsions. C: two revolutions D: one revolution
- One of the differences between a two-stroke engine and a four-stroke engine is,（） A: a two-stroke engine works without exhaust operation B: a two-stroke engine works without compression stroke C: a two-stroke engine works without expansion stroke D: a two-stroke engine works without suction operatio
- If a four-stroke/cycle diesel engine is running at 1550 RPM， the speed of the camshaft will be（）.
- With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).