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Flashcards in Fuel Injections Deck (26):
1

Lubricating Properties

the lubricating quality of fuel must help reduce engine and fuel system wear

2

Operation during low temperature conditions

diesel fules contain wax like molecules, that solidify at low temperatures

3

good fuel economy

increasing density of fuel will increase its heat contact and improve fuel economy

4

starting ease

diesel fuel needs to ignite at low temperatures and pressure found in the combustion chamber during cranking

5

Flash point

the temperature where fuel must be heated to produce a vapour that will ignite when exposed to sparks or open flame

6

Two types of nozzles

Hole and Pintle

7

Cetane Fuel

Runs good in cold weather
Diesel rating

8

Octane Fuel

Gas Rating

9

Winter Fuel Pour Point

-44C

10

Summer Fuel Pour Point

-23C

11

Volatility

How quickly something vaporizes than burns

12

Stoichiometric

(Air/Fuel mix) makes sure all fuel burns
14.7:1 = Gas

13

Isopropyl Alcohol

Helps diesel fuel not freeze
Absorbs water (Base for diesel Additives)

14

Cloud Point

Temperature at which wax begins to give fuel a hazy or milky look (plugs filters with wax Particles)

15

Ratio for Air to fuel

20:1

16

White smoke

Happens when cranking engine
(Un burned fuel)

17

Black smoke

Over burned fuel
Air to fuel Mixture is wrong
too much fuel too little air

18

Blue smoke

Occurs from oil contamination

19

Swirl

Helps combustion and mix fuel in cylinder

20

Port closure

Is the beginning of injection

21

Fuel Metering

Measures the correct quantity of fuel required for any given engine speed

22

Actions occurring in the injector

pressure and metering

23

Paraffin

wax-like compound

24

Effective Stroke

The time the plunger is injecting

25

Auto-ignition temperature

The temperature at which fuel will ignite when heated

26

Lubricity

A fuel's lubricating quality