Fuel_System_Operation_Worksheet
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Dec 6, 2023
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AUTO 132 — Lesson 12
Fuel System Operation Worksheet
Using the information in the PowerPoint presentation for Lesson #12, as well as the animations
available at
VirtualVehicleMD.com
, answer the following questions in your own words as much
as possible.
Your Name:
1.
Where is an electric fuel pump typically located?
2.
What are the primary components of a fuel tank?
3.
How does a return fuel system work ? What are its components?
4.
The fuel gauge on the instrument cluster indicates an empty tank, but the fuel tank was
just filled. Which component has likely failed?
5.
What are the symptoms of a clogged fuel filter?
6.
What are the symptoms of a faulty fuel pressure regulator?
7.
Explain in your own words how a typical fuel injector works.
8.
What is the difference between a return fuel system and a return-less fuel system?
9.
How is fuel pressure controlled in a return-less fuel system?
10. What happened to inline fuel filers on vehicles around 2005?
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1. Which engine does operate at lower ??? and has higher air-fuel mass ratio?
2. Which engine does burn fuel more completely?
3. Which engine has lower fuel cost?
4. Explain what compression ratio for Otto and Diesel cycles means
5. Explain what cut-off ratio for Diesel cycles means
6. Explain the limitations of SI engines in terms of their ability to operate at much higher compression ratios. What is this limitation called?
7. Provide general plot(s) for thermal efficiency, ? vs compression ratio, r…
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Task 1:
Your first customer asked for an internal combustion engine to use it in a designed car. Your role is to
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efficiency, and deliver a detailed technical report which includes the following steps:
Describe with the aid of diagrams the operational sequence of four stroke spark ignition and
four stroke compression ignition engines.
Review the efficiency of ideal heat engines operating on the Otto and Diesel cycles by explaining
and generating plot(s) for thermal efficiency, 7 vs compression ratio and cut-off ratio.
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Convert Text to Table
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a greater range (450-550 miles) than did the
conventional vehicle (350 miles). And, as might be
expected, these numbers were the same for gasoline
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better than the conventional vehicle. This in turn, meant
less frequent fill-ups for the HEV. Burning less gasoline
causes the HEV to be 95% cleaner-far friendlier to
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HEV performed more like a V-6 (more powerfully)
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Please provide complete solutions with formulas on how to get each values without rounding off.
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True
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•23.56%
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STEP 1
Describe the operational sequence of four-stroke spark ignition and four-stroke compression ignition engines with the aid of sketches by constructing simple sketch representing the operation and plotting the P-V diagrams for each process during the cycle to show the following:
The input and output heat and net output work
The air-fuel mixture intake and exhaust gasses
The spark plug when it is in the active mode
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STEP 1
Describe the operational sequence of four-stroke spark ignition and four-stroke compression ignition engines with the aid of sketches by constructing simple sketch representing the operation and plotting the P-V diagrams for each process during the cycle to show the following:
The input and output heat and net output work
The expansion and compression strokes
The air-fuel mixture intake and exhaust gasses
The spark plug when it is in the active mode
The complete cycle of ideal Otto and Diesel cycles that shows the input and output heat and net output work.
STEP 2
Explain the mechanical…
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b) The turbine and pump operate adiabatically.
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d) Source of energy isentropic.
e) Sink of energy is isentropic.
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just before the point of ignition however these engines still require an air induction system.
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were used to create a fuel/air ratio at different engine speeds and loads. A cold start facility was
also fitted albeit manually operated.
The demand for more performance has meant the fixed choke carb' was no longer suitable. More
complex carbs' were developed (twin choke) as well as variable choke (constant depression)
carbs which used engine vacuum (during throttle opening) to vary the size of choke according to
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a) The details of travel time and capacity of different links in a portion of a city
road network is as given in Table 1. Assign a traffic volume of 15,000 pcu per hr
from node A to node I by multiple route assignment technique.
Table 1: Travel time and capacity
Link
Travel time in minutes
Practical capacity in
pcu/hr
A-B
6000
A-C
5000
A-D
5000
B-F
6000
C-E
5000
D-G
5000
E-H
5000
F-I
6000
G-H
5000
H-I
10000
wwNN
2
2
3
3
3
2
N33 N
2
2
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EDUKAS
NG
AMARAN
Republic of the Philippines
Department of Education
REGION VI - WESTERN VISAYAS
SCHOOLS DIVISION OF CADIZ CITY
CADUHA-AN NATIONAL HIGH SCHOOL
BRGY. CADUHA-AN, CADIZ CITY, NEGROS OCCIDENTAL
Test II. Put your correct answer in the number correspondence
18
12
19
13
20
14
15
21
16
22
23
17
E.Normal
F Oil Depos
A. Too Hot B.Worn
E.Ash Deposits
Mechanical Damage
C.Detonation D.Splash Deposit
H.Pre Ignition
K.Gap Bridging
I.High Speed Glazing
L.Carbon Deposit
H. in Spark Plug insulator lYpes, How many types are they?
В.5
С.3
D.4
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intake valve
v)
vi)
intake
compression
How
Tuel injector
power
lo egiteqo190
the number of molecules in the cylinder
the internal energy of the gas;
the work done on or by the gas;
the thermal energy exchanged with the environment.
exnaust vaive
The diagrams show the cylinder of a petrol engine in 4 stages. Petrol vapour
and air are drawn into the cylinder, The mixture is then squeezed together, and
then exploded by a spark. The explosion pushes down the piston. The exhaust
gases are then expelled from the cylinder.
pril
Use the first law of thermodynamics to analyse the energy changes during the
process.
At each stage explain what happens to
the gas
exhaust
0101
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4. Explain the operation of the ICES valve system.
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