3B2 Ch 6

Question 1

Where is the oil scraper or control ring in a diesel engine located?
Select one:

a.
Above the compression rings

b.
On the crankshaft

c.
On the bottom portion of the piston

d.
Next to the camshaft

e.
In between the two compression rings

Answer 1

c.
On the bottom portion of the piston

Question 2

The oil filter in a diesel engine lubricating system is:
Select one:

a.
Placed on the suction side of the pump

b.
Between the oil cooler and oil manifold

c.
Not always required

d.
Between the return line and the sump

e.
In the engine sump

Answer 2

b.
Between the oil cooler and oil manifold

Question 3

Connecting rods are hollow bored to convey lubricating oil to which component(s)?
Select one:

a.
Gudgeon pins/wrist pins

b.
Pistons

c.
Camshaft

d.
Cylinder walls

e.
Piston skirt

Answer 3

a.
Gudgeon pins/wrist pins

Question 4

During the compression stroke of a diesel engine, how high might the temperature in the cylinder be?
Select one:

a.
250°C

b.
350°C

c.
450°C

d.
650°C

e.
850°C

Answer 4

d.
650°C

Question 5

The pressure at the discharge of a supercharger may be as high as:
Select one:

a.
100 kPa

b.
120 kPa

c.
10 kPa

d.
30 kPa

e.
140 kPa

Answer 5

e.
140 kPa

Question 6

The pressure of the air at the end of the diesel compression stroke may be as high as:
Select one:

a.
4100 kPa

b.
2000 kPa

c.
500 kPa

d.
1500 kPa

e.
5000 kPa

Answer 6

d.
1500 kPa