delivering the same quantity of fuel to each cylinder for each power stroke according to engine load
maintaining the metering adjustment for a reasonable period under all load conditions
timing fuel injection to obtain maximum power and good fuel economy
distributing the fuel to all parts of the combustion chamber for proper combustion
第1题：
cetane number
octane number
ignition index number
volatility point
第2题：
increasing the quantity of starting air
increasing the lube oil pressure
heating the engine fuel supply
heating the engine coolant
第3题：
_______can be a direct cause of faulty operation of diesel engine fuel injection nozzles.
A.Excessive fuel nozzle holder cooling
B.Sediment in the fuel supply
C.Distortion of the fuel spray pattern
D.Improper atomization of the fuel
第4题：
fuel oil pump will over-speed if dirt is not removed
fuel oil transfer pumps cannot tolerate small amounts of grit in the oil
fuel injectors may be damaged by foreign particles in the fuel oil dirty
fuel will clog the intake air filter
第5题：
diesel oil instead of fuel oil
fuel oil instead of diesel oil
diesel oil instead fuel oil
fuel oil instead diesel oil
第6题：
deliver proper fuel quantity to the injection nozzle
provide rapid fuel injection cutoff
control fuel quantity entering the pump body
control fuel pressure delivered to the combustion chamber
第7题：
the proper back pressure
the cooling water temperature
correct timing and proper seating
accurate metering and the exhaust temperature
第8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9题：
affect the injection pressure
improve combustion
reduce compression pressure
decrease power output
第10题：
a higher cetane number of fuel oil
the diesel fuel used having a high viscosity
mechanical rigidity in the lube pump mechanism
a decrease rigidity in the fuel pump delivery pressure