Diesel Fuel and Storage Tanks

Question 1

What is diesel fuel?

Answer 1

It is a hydrocarbon composed of approximately 85% carbon and 15% hydrogen

Question 2

What are the 9 different property characteristics of diesel?

Answer 2

Ignition quality, Energy content, Volatility, Viscosity, Pour point, Cloud point, Flash Point, Sulphur content, Water and sediment content

Question 3

Cetane number

Answer 3

A measure of diesel’s ignition quality. the higher the cetane number the lower the self ignition temperature

Question 4

Octane number

Answer 4

Gasolines rating system. Higher the number the more resistance to ignition.

Question 5

Cetane numbers of summer and winter diesel

Answer 5

Winter #1 - 45-50

Summer #2 - 35-40

Question 6

What is volatility?

Answer 6

The rate of evaporation of fuel

Question 7

What are example temps of diesel pour points?

Answer 7

Winter -44C

Summer -23C

Question 8

What is cloud point?

Answer 8

The point at which waxes start to solidify. Usually about 3-6C about pour point temp

Question 9

What two major problems are created by burning sulphur in engine?

Answer 9

It produces undesirable exhaust emissions (SOx’s)

It produces highly corrosive gases that deteriorate engine and exhaust system

Question 10

Fuel additives are separated into what 4 basic categories?

Answer 10

Engine performance, Fuel handling, Fuel stability, Contaminant control

Question 11

Alcohol for de-icing diesel fuel?

Answer 11

Use isopropyl alcohol (rubbing alcohol). No more then 0.5% concentration by volume

Question 12

What fluid should be used to test injectors and fuel pumps?

Answer 12

Test oil

Question 13

Most storage tanks are made of what?

Answer 13

Welded steel

Question 14

The fuel outlet hose should be placed where (storage tank)?

Answer 14

3-4 inches from bottom of tank

Question 15

What is the minimum distance between the suction and return line on mobile tank?

Answer 15

12”

Question 16

Diesel is produced from the refining of what?

Answer 16

Crude oil

Question 17

Cetane rating refers to the ability of:

Answer 17

Diesel fuel to ignite

Question 18

The lowest temp fuel will give off flammable vapours is referred to as?

Answer 18

Flash point

Question 19

What is the minimum rating for diesel winter fuel?

Answer 19

ID 40

Question 20

List three common filter classifications.

Answer 20

primary filter
secondary filter
final stage filter

Question 21

What are two components which make up the port and helix pumping unit?

Answer 21

barrel

plunger

Question 22

What is pour point?

Answer 22

the lowest temperature diesel fuel will pour

Question 23

Particles in the size range of ______ to ______ are the most damaging type.

Answer 23

5 to 20 micron

Question 24

Five basic types of fuel transfer pumps are:

Answer 24

1. diaphragm
2. plunger
3. hand premier
4. gear
5. vane/blade

Question 25

List four basic types of filters used on diesel fuel injection systems?

Answer 25

1. screen or strainer 2. surface 3. depth 4. wedge