PRINCIPLES OF GASOLINE/DIESEL FUEL SYSTEMS - OD1620 - LESSON 2/PE 2
a.
What is the simplest form of diesel combustion chamber design?
b.
A precombustion chamber is an auxiliary chamber that is located at the
top of the cylinder.
How is this chamber normally connected to the main
combustion chamber?
c.
Prior to actual ignition of the air inside the turbulence chamber, it
is estimated that the velocity of the air in the chamber is several times
that of crankshaft speed. What is this approximate speed?
d.
Name the combustion chamber design that was made specifically for use
in the multifuel engine.
e.
What are the two methods of injecting fuel into a compression-ignition
engine?
f.
Name the three basic functions of a diesel injection system.
g.
The general operation of a multiple unit injection system is described
below. Fill in the blanks.
(1) The fuel supply pump and the fuel filter provide a _____ ________
supply of fuel to the __________ __________ __________ pump.
Pressure
usually is regulated to approximately ________ psi.
(2) The multiple unit injector contains an ________ ________ pump for
each engine cylinder. Fuel is delivered to the __________ at each cylinder
from the multiple unit injector in a timed sequence and a __________ amount
based on accelerator pedal _________ and ________ ________.
(3) The injectors receive ________ ________ charges from their
respective injection pumps and spray it into the __________ _________ in a
________ ________ that is tailored to provide the best overall performance
for their particular application.
h.
Name the specific type of injection pumps that are arranged in a line
so that they may be driven by a common camshaft. The lobes of the camshaft
are arranged so that they coincide with the firing order of the engine.
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