increase engine power
increase engine load
decrease engine power
improve fuel economy
第1题：
When fuel is injected late into a diesel engine cylinder_______.
A.the exhaust will be clear
B.fuel consumption will be low
C.all the fuel will be burned at top dead center
D.fuel consumption will be high
第2题：
clogged coolant passages
a leaking cylinder head gasket
low fuel oil pressure
worn or broken cylinder liner sealing rings
第3题：
Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.
A.prolong the ignition delay period
B.ensure the beginning of fuel injection
C.thoroughly utilize the air charge
D.allow controlled fuel combustion
第4题：
turbocharger
injection nozzle tip
carburetor
fuel oil pump
第5题：
Excessive cylinder liner
water in the fuel system
Cracked cylinder liner
Leaking lube oil cooler
第6题：
Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by______.
A.using fuel oil with low cetane number
B.a badly worn piston pin
C.a loose flywheel key
D.a loose bed plate bolt
第7题：
clogged fuel injection pumps
increased cylinder liner wear
intake valve stem corrosion
varnish deposit on pistons
第8题：
If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the
A.fuel line connections to the cylinder injection valves
B.gasket surfaces of the fuel oil filters
C.discharge fittings of the fuel injector pumps
D.suction side of the fuel oil transfer pump
第9题：
quantity of fuel injected is decreased
quantity of fuel injected will always be increased
start of injection is advanced
duration of injection will always be greater
第10题：
Quantity of fuel injected tends to be decreased
Quantity of fuel injected will always be increased
Start of injection tends to be advanced
Duration of injection will always greater