Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 29, Problem 8RQ
True or False? Fuel pressure typically is at its highest level when vacuum is applied to the pressure regulator.
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12.
Figure Q12 shows a prospective design for a conveyor roller system, for transferring
crates, one at a time. The system is made up of two parallel rectangular steel
beams, built-in at one end and simply supported at the other, with closely spaced
rollers mounted in-between, for the crate to pass over.
a) Using Macaulay notation, carry out an analysis of the problem and calculate
the deflection of the mid-length point of the beams when the crate is
centrally located, midway between A and B. State any important
assumptions used in your analysis.
[20 marks]
b) Comment briefly whether this would be the maximum deflection of the beams
when the crate is centrally located.
2 m
8 m
A
Direction of travel
Figure Q12 (side view, only one beam visible)
Useful information
I for each separate beam = 12 ×10 m²
E for both beams = 210 GPa
Weight of one crate = 800 N
[5 marks]
B
11.
A ring (side view shown in Figure Q11) has a circular solid cross-section of 5 mm
diameter. The ring itself has a radius of R = 100 mm and a very narrow gap at point
A, that allows the two free ends to be pulled apart by forces P, increasing the size of
the gap.
○
P
A
Figure Q11
P
a) Show that the total strain energy of the ring due to the applied forces is:
U =
3πP²R³
2EI
[12 marks]
b) Find the maximum bending stress produced if forces of P = 8 N are applied.
[6 marks]
c) What minimum force P would cause the material in the ring to yield and at
which locations could this yielding begin to occur?
Useful information
E for the ring material = 75 GPa
Oyield for the ring material = 190 MPa
[7 marks]
Q2(15 Marks): From Fig. 2, Determine
(a) mass equivalent in term x2, (b)
stiffness equivalent in term x2, and (c) the
natural frequency for the system in term
x2. Note: (1) J Cylinder =
mcr?
J link
(2)
2
3
Pulley, mass moment of
inertia J
Rigid link 1 (mass m₁),
rotates with pulley.
about O
Cylinder, mass m
Adherence to the symbols as in the question
152 153
xx(1)
Fig. (2)
m
k₁
nimmunizmu
Rigid link 2 (mass m₂)
Chapter 29 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 29 - Fuel pump is a statement of the volume of the fuel...Ch. 29 - Explain the purpose of the relief valve and...Ch. 29 - Most fuel tank filler caps contain a pressure...Ch. 29 - What type of fire extinguisher should you have...Ch. 29 - What is the first thing that should be...Ch. 29 - Why is a plastic or metal restrictor placed in...Ch. 29 - Low fuel pump pressure causes a mixture and...Ch. 29 - True or False? Fuel pressure typically is at its...Ch. 29 - If fuel pump pressure or volume is less than...Ch. 29 - Which of the following statements about a fuel...
Ch. 29 - Low fuel pressure can be caused by all of the...Ch. 29 - If a fuel system loses pressure immediately after...Ch. 29 - List at least five safety precautions that should...Ch. 29 - Describe the operation of the evaporative system...Ch. 29 - True or False? On todays vehicles, an electric...Ch. 29 - Technician A says that excessively high pressure...Ch. 29 - Technician A replaces a damaged steel fuel line...Ch. 29 - While discussing electric fuel pumps: Technician A...Ch. 29 - To relieve fuel pressure on an EFI car: Technician...Ch. 29 - While discussing quick-disconnect fuel line...Ch. 29 - While discussing fuel filters: Technician A says...Ch. 29 - While discussing the various fuel filters used in...Ch. 29 - While discussing fuel tank filler pipes and caps:...Ch. 29 - While discussing electric fuel pumps: Technician A...Ch. 29 - While discussing electric fuel pumps: Technician A...
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