Why is it necessary to
compress the air charge in the cylinders
of a diesel engine?/To ignite the fuel.
Turbulence of the
compressed air charge in a diesel engine cylinder increases _____________./the
efficiency of the engine
A sudden drop in diesel
engine cylinder compression pressure can be caused by
____________./malfunctioning valves
Which of the listed
reasons is the most likely cause of a sudden drop in compression pressure in
one diesel engine cylinder?/Malfunctioning valves
The compression ratio of
a diesel engine refers to the ratio between the _______________./cylinder
volumes at top dead center and at bottom dead
center
The purpose of
compressing the air within the cylinder of a diesel engine is to
__________./produce the heat for ignition
If the compression ratio
is increased on any diesel engine, _____________./thermal efficiency will
increase
Increasing the
compression ratio of a diesel engine while maintaining the designed rate of
fuel flow will result in ____________./increased horsepower
In an operating diesel
engine, the sealing of the cylinder is the result of the compression rings
being forced against the cylinder walls by _____________./combustion gas
pressure acting behind the ring
A diesel engine valve
spring is under compression when the valve is _________. I. open
II. closed/both I and II
In the starting process
of a diesel engine, the main object is to attain the compression conditions
sufficient to ______________./ignite the
fuel
The compression of air in
a positive displacement rotary supercharging blower, occurs only
_____________./as air moves into the discharge passage
A bright shiny appearance
of the sealing surfaces on diesel engine compression rings indicates
_____________./properly functioning rings
The face surface
appearance of a shallow groove, stainless steel, chrome plated compression ring
should exhibit through its operating life a ____________./smooth, shallow
groved, chrome surface
A sudden drop in
compression pressure in one cylinder of a diesel engine can be caused by
_____________./malfunctioning valves
Low compression in a
diesel engine could be caused by
________________./worn or broken piston rings
Low compression pressure
in a diesel engine can be caused by _____________./improperly seating intake
valves
Low compression pressure
in a diesel engine is caused by ___________./improperly seated valves
Low compression pressure
in a diesel engine can be caused by ______________./a leaking cylinder head
gasket
Low compression pressure
in a diesel engine may be the result of
______________./excessive mechanical clearance between the piston crown and
cylinder head
Which of the listed
problems can be a cause of low compression
pressure in a diesel engine?/All of the above
A drop in compression
pressure in one cylinder of a diesel engine can be caused by
_____________./burned valves
Which of the following
reasons represents why the designed compression ratio of a gasoline engine is
lower than that of a diesel engine?/Compression must be low to prevent
preignition.
When a diesel engine
compression pressure is checked, the indicator is connected to the
_____________./cylinder indicator cock
When the normal
compression ratio of a diesel engine is not very high, misfiring at light loads
may be caused by
_____________./excessive cylinder cooling |
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2 comments:
very nice post
diesel engine spare parts
very nice post
diesel engine spare parts
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