1-22.
What is the purpose of a primary
fuel filter on a diesel fuel
system?
1.
Filters all foreign matter
from the diesel fuel
2.
Filters minute traces of
foreign matter from the
diesel fuel
3.
Filters the air deposits
from diesel fuel
4.
Filters the larger foreign
matter from the diesel fuel
1-23.
A good practice is to drain one
gallon of fuel out of the filter
into a container or onto a rag
during prestart operations.
1.
True
2.
False
1-24.
What is the primary function of
the secondary filter?
1.
To protect the carburetor
2.
To protect the fuel injection
pump
3.
To protect the fuel transfer
pump
4.
To protect the fuel supply
lines
1-25.
What function of the engine creates
a partial vacuum in the carburetor
throat that allows low-pressure air
to rush by the fuel nozzle?
1.
The upward compression stroke
of the piston
2.
The exhaust stroke driven
turbocharger
3.
The downward intake stroke
of the piston
4.
The power stroke of the piston
1-26.
The primary function of the
injection pump is to supply low-
pressure fuel for injection.
1.
True
2.
False
1-27.
What is the basic function of
injector nozzles?
1.
Forms a restriction that causes
more fuel and less air to be
injected into the combustion
chamber of each cylinder
2.
Injects fuel into the float
chamber of the carburetor
3.
Sprays the fuel in atomized
form into the combustion
chamber of each cylinder
4.
Sprays a rich air-to-fuel
mixture in the cylinders for
the hard job of starting diesel
engines
1-28.
Glow plugs and injector nozzles
are installed in the precombustion
chamber of the cylinder head.
1.
True
2.
False
Learning Objective: Recognize
the principles and components
of air induction systems.
1-29.
Which of the following is NOT the
function of a diesel engine air
induction system?
1.
Cleans the intake air
2.
Silences the intake noise
3.
Furnishes air for supercharging
4.
Controls the fuel and air
mixture
1-30.
The power that drives the turbine
wheel on a turbocharger is
generated by what source?
1.
Exhaust gases
2.
A hot flame
3.
Electrical sparks
4.
High-pressure air
1-31.
Poor combustion is a result of
a buildup of dust and dirt in
the air cleaner passages that
has choked off the air supply.
1.
True
2.
False
3
