PRINCIPLES OF GASOLINE/DIESEL FUEL SYSTEMS - OD1620 - LESSON 2/PE 2
LESSON 2. PRACTICAL EXERCISE ANSWERS
1.
a.
As exacting.
b.
(1)
Particles of dirt can cause scoring of the injector components
(2) Moisture in the fuel can cause corrosion of the injector
components
c.
Viscosity.
d.
The ignition quality of a fuel is its ability to ignite spontaneously
under the conditions existing in the engine cylinder.
e.
Ignition delay or ignition lag.
f.
(1)
Alternate II fuel
(2)
Emergency fuel
g.
20 psi.
2.
Second Requirement
a.
Open chamber.
b.
The precombustion chamber is connected to the main combustion chamber
by a restricted throat or passage.
c.
50 times the crankshaft speed.
d.
Spherical combustion chamber.
e.
(1)
Air injection
(2)
Solid injection
f.
(1)
To meter the fuel accurately
(2) To distribute the fuel equally to all of the cylinders at a high
enough pressure to ensure atomization
(3)
To control the start, rate, and duration of the injection
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