【单选题】The fuel injection pumps on a diesel engine are controlled by a linkage system attached to the _____.
【单选题】The rate of fuel injection in a diesel engine cylinder depends primarily on _____.
A.
the size of the holes in the fuel nozzle
C.
supply pressure to the pump
D.
shape of the combustion chamber
【单选题】The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by___________.
A.
the firing pressure in the cylinder
B.
a metering helix inside the pump
C.
varying the physical length of the plunger stroke
D.
varying the clearance between the injector cam and the injector rocker arm
【单选题】企业应当以实际发生的交易或者事项为依据进行确认、计量和报告,如实反映符合确认和计量要求的各项会计要素及其他相关信息,保证会计信息真实可靠、内容完整,体现的是会计信息质量要求的( )。
【单选题】Late fuel injection in a diesel engine is indicated by low firing pressure with _________.
A.
low exhaust temperature
C.
mechanical knock in each cylinder
D.
black or gray exhaust smoke
【单选题】The two basic types of fuel injection pumps used in the diesel engine are ______ and in-line type.
C.
Distributor Pump Assembly
【单选题】Significant retardation of a diesel engine fuel injection timing will result in ________.
A.
smoother engine operation
B.
advanced fuel ignition
C.
increased fuel economy
【单选题】Injection lag in a diesel engine may be caused by_______.
A.
a higher cetane number of fuel oil
B.
the diesel fuel used having a high viscosity
C.
mechanical rigidity in the lube pump mechanism
D.
a decrease rigidity in the fuel pump delivery pressure