更多"Cracking of a diesel piston crown c"的相关试题:
[单项选择]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
[单项选择]The carbon deposits on the piston crown and in the ring grooves （）.
A. should be scraped
B. should be derusted
C. should be drilled out
D. to be brushed off
[单项选择]The piston crown employs the usual jet-shaker principle with an arrangement of cooling bores in the crown so that the surface temperatures of the crown are moderate with a very even distribution（）
A. water cooling
B. oil cooling
C. air cooling
D. combined cooling
[单项选择]In a four-cycle diesel engine piston blow-by can result in increased（）
A. crankcase pressure
B. compression pressure
C. scavenge pressure
D. exhaust manifold pressure
[单项选择]An axial轴向 piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned （）.
A. radially from the shaft
B. parallel to each other and to the shaft
C. parallel to each other but at a right angle to the shaft
D. at an angle to each other and to the shaft
[单项选择]Spontaneous ignition can result from（）.
A. an unprotected drop-light bulb
B. careless disposal or storage of material
C. smoking in bed
D. worn electrical wires on power tools
[单项选择]Excessive lube oil consumption can result from worn or broken（）
A. piston rings
B. valve guides
C. valve seals
D. all of the above
[单项选择]The energy for pushing this piston up can be supplied from （）, so that the piston can keep moving up and down.
A. the same piston
B. the piston nearby
C. the other pistons
D. the generators on board
[单项选择]Diesel engine piston seizure can be caused by （）
A. poor cooling of cylinder walls
B. improper cooling of the piston
C. insufficient piston lubrication
D. all of the above
[单项选择]Low compression of diesel engine may result from （）
A. a worn cylinder
B. broken piston rings
C. any of A and B
D. none of the above
[单项选择]I must hold（）for any damage which may result from the accidents you have caused.
A. your responsible
B. you responsible
C. you are responsible
D. your are responsible
[单项选择]Worn diesel engine intake valve guides can result in （）
A. increased engine breathing efficiency
B. excessive valve lash
C. excessive lube oil consumption
D. lower than normal fuel consumption
[单项选择]What harmful condition can result if a diesel engine is operated at very light loads for long periods of time?（）
A. increased carbon buildup
B. burning of intake valves
C. excessive firing pressures
D. increased fuel consumption
[单项选择]Uncoiling manila line improperly can result in a(n)（）.
A. number of fishhooks
B. kink in the line
C. 50% loss of efficiency of the line
D. increase in deterioration of the line
[单项选择]A dirty lube oil strainer can result in（）
A. crankcase
B. low lube oil temperature
C. excessive oil consumption
D. low bearing oil pressure
[单项选择]Worn main bearings in a diesel engine can result in （）
A. decreased compression pressure
B. increased lube oil pressure
C. lower lube oil temperature
D. excessive leakage past the piston rings
[单项选择]One cause of diesel engine surging can be a result of （）
A. injection pump plungers stuck or worn
B. low compression
C. solenoid stuck open
D. fuel tank too full
[单项选择](Piston area)X(Piston stroke)K(numbers of the cylinders)=engine（）
A. brake horsepower
B. displacement
C. cylinder volume
D. cylinder clearance
