A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）

A . prolonged maintenance intervals B . improved atomization C . greater fuel economy D . incomplete combustio

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 cylinder

A . slightly acidic condition B . slightly alkaline condition C . overtreatment of water D . neutral condition of water

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 stroke

A . late ignition B . water in the fuel C . high compression temperature D . starting valve stuck ope

A . a leaking seal ring B . heat transfer from exhaust valves C . restricted cooling passages D . overheated intake valve

A . pumping action of the piston B . pressure of the fuel charge C . vacuum developed in the manifold D . pressure of the fresh air charge

A . lower the no-load RPMs B . provide more air for combine with the fuel C . increase the no-load RPMs D . provide more fuel combine with the air

A . blows out the exhaust gases B . supplies oxygen for combustion C . cools the valves and cylinder walls D . all of the above

A . proper fuel injection B . water in the fuel C . incomplete combustion D . burning of lube oil

A . decreased fuel efficiency B . increased exhaust temperature C . black smoke D . overspeed tri

A . engine power losses B . smoking due to unburned fuel C . high exhaust temperature readings D . all of the above

A . cold intake air B . excessive compression pressure C . excessive cylinder lubrication D . a light load

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、A. turbine engine B、B. gas turbine C、C. steam engine D、D. internal combustion engine

A . cylinders B . exhaust valves C . pistons D . fuel valve

A . check the pyrometer readings B . check the crankcase oil level C . check the fuel oil strainers D . clean the fuel system

A . slam charger B . turbocharger C . fuel atomizer D . fuel injector

A . injecting fuel oil into a cylinder B . removing exhaust gases from the cylinder C . forcing air into the cylinders under pressure after the exhaust valve has dosed D . a combination of all the above

A . increase the exhaust temperature B . increase the power of C . reduce the speed D . increase the fuel consumptio

A . control axial movement of the crankshaft B . transmit engine thrust to the propeller shaft C . absorb vibrations in the propeller shafting D . prevent propeller thrust from being transmitted to the hul

A . higher working temperature of piston and cylinder B . the use of scavenge ports C . fewer power strokes per revolution of the crankshaft D . part of the fuel is burned as the piston is moving away from top dead center

A . increase exhaust back pressure B . causes excessive crankcase pressure C . can only be detected by a compression check D . decreases fuel consumptio