higher torque but lower brake horsepower
lower torque but higher brake horsepower
higher torque and lower brake horsepower
lower torque and higher brake horsepower
第1题：
chromium plating piston rings
knurling the piston skirt
extended maximum power operation
applying load to a cold diesel engine
第2题：
a worn cylinder
broken piston rings
any of A and B
none of the above
第3题：
A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an
A.turbocharger malfunction or failure
B.crankcase exhauster overload
C.overload on the intercooler
D.obstruction in the engine cylinders
第4题：
greater than the average exhaust manifold pressure
less than the average exhaust manifold pressure
greater at the turbine wheel than at the impeller
greater at reduced engine speed
第5题：
discharge exhaust gases and smoke
furnish energy to the turbocharger
reduce engine room noise
all of the above
第6题：
power the after-coolers
power the turbocharger
reduce the cylinder scavenge effect
cool the turbocharger
第7题：
fuel knock
increased power
low compression pressure
high exhaust temperature
第8题：
The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually______.
A.greater than the average exhaust manifold pressure
B.less than the average exhaust manifold pressure
C.greater at the turbine wheel than at the impeller
D.greater at reduced engine speed
第9题：
valve guides
oil control rings
valve seats
compression rings
第10题：
increased engine back pressure
sulfuric acid corrosion
surface pitting of the turbocharger
moisture impingement on the turbocharger compressor blade